./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-inc-subseq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:55:52,503 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:55:52,557 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:55:52,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:55:52,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:55:52,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:55:52,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:55:52,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:55:52,596 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:55:52,596 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:55:52,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:55:52,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:55:52,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:55:52,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:55:52,597 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:55:52,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:55:52,598 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:55:52,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:55:52,602 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:55:52,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:55:52,603 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:55:52,603 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:55:52,603 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:55:52,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:55:52,604 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:55:52,604 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:55:52,604 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:55:52,604 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:55:52,604 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:55:52,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:55:52,604 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:55:52,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:55:52,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:55:52,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:55:52,605 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:55:52,605 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:55:52,605 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:55:52,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:55:52,606 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:55:52,606 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:55:52,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:55:52,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:55:52,606 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 [2024-10-14 19:55:52,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:55:52,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:55:52,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:55:52,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:55:52,849 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:55:52,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-10-14 19:55:54,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:55:54,358 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:55:54,359 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-10-14 19:55:54,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f02b898b/8240ea3640e74523920090c2e0a0b2fa/FLAG8bc028645 [2024-10-14 19:55:54,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f02b898b/8240ea3640e74523920090c2e0a0b2fa [2024-10-14 19:55:54,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:55:54,381 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:55:54,382 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:55:54,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:55:54,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:55:54,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:55:54" (1/1) ... [2024-10-14 19:55:54,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6af61ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:54, skipping insertion in model container [2024-10-14 19:55:54,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:55:54" (1/1) ... [2024-10-14 19:55:54,411 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:55:54,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:55:54,615 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-14 19:55:54,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@373ea144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:54, skipping insertion in model container [2024-10-14 19:55:54,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:55:54,617 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:55:54,619 INFO L158 Benchmark]: Toolchain (without parser) took 236.92ms. Allocated memory is still 163.6MB. Free memory was 94.3MB in the beginning and 83.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:55:54,619 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 163.6MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:55:54,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.18ms. Allocated memory is still 163.6MB. Free memory was 94.1MB in the beginning and 83.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:55:54,621 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 163.6MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.18ms. Allocated memory is still 163.6MB. Free memory was 94.1MB in the beginning and 83.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:55:56,459 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:55:56,520 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:55:56,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:55:56,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:55:56,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:55:56,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:55:56,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:55:56,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:55:56,551 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:55:56,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:55:56,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:55:56,552 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:55:56,552 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:55:56,552 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:55:56,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:55:56,553 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:55:56,553 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:55:56,553 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:55:56,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:55:56,554 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:55:56,556 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:55:56,557 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:55:56,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:55:56,557 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:55:56,557 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:55:56,557 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:55:56,557 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:55:56,558 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:55:56,558 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:55:56,558 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:55:56,558 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:55:56,558 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:55:56,558 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:55:56,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:55:56,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:55:56,559 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:55:56,559 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:55:56,559 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:55:56,560 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:55:56,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:55:56,563 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:55:56,563 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:55:56,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:55:56,564 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:55:56,564 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f7b2e4777088b02df05d348ae0a210dcd9618a97428b10acd3ef63d9199610 [2024-10-14 19:55:56,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:55:56,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:55:56,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:55:56,858 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:55:56,858 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:55:56,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-10-14 19:55:58,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:55:58,374 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:55:58,374 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-inc-subseq.wvr.c [2024-10-14 19:55:58,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5c61a76/4ed416b43c3744269dbd281234df42fe/FLAG86d641e03 [2024-10-14 19:55:58,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5c61a76/4ed416b43c3744269dbd281234df42fe [2024-10-14 19:55:58,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:55:58,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:55:58,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:55:58,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:55:58,791 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:55:58,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:55:58" (1/1) ... [2024-10-14 19:55:58,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174e25df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:58, skipping insertion in model container [2024-10-14 19:55:58,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:55:58" (1/1) ... [2024-10-14 19:55:58,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:55:59,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:55:59,027 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:55:59,032 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:55:59,057 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:55:59,065 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:55:59,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:55:59,105 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:55:59,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59 WrapperNode [2024-10-14 19:55:59,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:55:59,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:55:59,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:55:59,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:55:59,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,154 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 12, calls inlined = 14, statements flattened = 184 [2024-10-14 19:55:59,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:55:59,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:55:59,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:55:59,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:55:59,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,194 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-14 19:55:59,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,214 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,215 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:55:59,218 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:55:59,218 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:55:59,219 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:55:59,219 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (1/1) ... [2024-10-14 19:55:59,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:55:59,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:55:59,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:55:59,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:55:59,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:55:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:55:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:55:59,290 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:55:59,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:55:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:55:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:55:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:55:59,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:55:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:55:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:55:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:55:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:55:59,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:55:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:55:59,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:55:59,294 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:55:59,390 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:55:59,392 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:55:59,861 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:55:59,862 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:56:00,158 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:56:00,158 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 19:56:00,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:00 BoogieIcfgContainer [2024-10-14 19:56:00,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:56:00,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:56:00,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:56:00,165 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:56:00,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:55:58" (1/3) ... [2024-10-14 19:56:00,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134d4548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:00, skipping insertion in model container [2024-10-14 19:56:00,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:55:59" (2/3) ... [2024-10-14 19:56:00,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134d4548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:56:00, skipping insertion in model container [2024-10-14 19:56:00,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:56:00" (3/3) ... [2024-10-14 19:56:00,168 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-inc-subseq.wvr.c [2024-10-14 19:56:00,184 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:56:00,184 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-14 19:56:00,184 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:56:00,246 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 19:56:00,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 53 transitions, 120 flow [2024-10-14 19:56:00,305 INFO L124 PetriNetUnfolderBase]: 5/51 cut-off events. [2024-10-14 19:56:00,306 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:56:00,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 5/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 140 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-14 19:56:00,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 53 transitions, 120 flow [2024-10-14 19:56:00,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 50 transitions, 112 flow [2024-10-14 19:56:00,321 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:56:00,327 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;@117d923d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:56:00,327 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-10-14 19:56:00,329 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:56:00,329 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:56:00,329 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:56:00,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:00,330 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:56:00,330 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:00,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash 566089, now seen corresponding path program 1 times [2024-10-14 19:56:00,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:00,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250784872] [2024-10-14 19:56:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:00,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:00,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:00,347 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:00,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:56:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:00,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:56:00,417 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:00,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:00,478 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:00,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:00,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250784872] [2024-10-14 19:56:00,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250784872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:00,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:00,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:56:00,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387005617] [2024-10-14 19:56:00,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:00,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:56:00,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:00,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:56:00,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:56:00,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-14 19:56:00,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:00,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:00,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-14 19:56:00,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:00,760 INFO L124 PetriNetUnfolderBase]: 299/576 cut-off events. [2024-10-14 19:56:00,760 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-14 19:56:00,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 576 events. 299/576 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3121 event pairs, 171 based on Foata normal form. 1/341 useless extension candidates. Maximal degree in co-relation 985. Up to 443 conditions per place. [2024-10-14 19:56:00,767 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 28 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2024-10-14 19:56:00,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 164 flow [2024-10-14 19:56:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:56:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:56:00,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-14 19:56:00,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5660377358490566 [2024-10-14 19:56:00,779 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 112 flow. Second operand 3 states and 90 transitions. [2024-10-14 19:56:00,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 164 flow [2024-10-14 19:56:00,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 156 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:56:00,786 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 100 flow [2024-10-14 19:56:00,788 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-10-14 19:56:00,791 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-10-14 19:56:00,791 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 100 flow [2024-10-14 19:56:00,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:00,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:00,792 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:56:00,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:00,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:00,996 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:00,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash 566090, now seen corresponding path program 1 times [2024-10-14 19:56:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:00,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290136614] [2024-10-14 19:56:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:00,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:00,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:01,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:01,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 19:56:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:01,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:56:01,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:01,095 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 [2024-10-14 19:56:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:01,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:01,162 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:01,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290136614] [2024-10-14 19:56:01,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290136614] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:01,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:01,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:01,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641308979] [2024-10-14 19:56:01,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:01,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:01,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:01,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:01,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:01,234 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-14 19:56:01,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:01,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:01,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-14 19:56:01,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:01,520 INFO L124 PetriNetUnfolderBase]: 301/582 cut-off events. [2024-10-14 19:56:01,521 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:56:01,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 582 events. 301/582 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3133 event pairs, 171 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 1019. Up to 452 conditions per place. [2024-10-14 19:56:01,528 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 31 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-10-14 19:56:01,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 190 flow [2024-10-14 19:56:01,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-10-14 19:56:01,533 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5471698113207547 [2024-10-14 19:56:01,534 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 100 flow. Second operand 4 states and 116 transitions. [2024-10-14 19:56:01,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 190 flow [2024-10-14 19:56:01,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 52 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:01,537 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 152 flow [2024-10-14 19:56:01,537 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2024-10-14 19:56:01,538 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-10-14 19:56:01,539 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 152 flow [2024-10-14 19:56:01,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:01,539 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:01,539 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-14 19:56:01,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-14 19:56:01,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:01,742 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:01,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:01,743 INFO L85 PathProgramCache]: Analyzing trace with hash 17549690, now seen corresponding path program 1 times [2024-10-14 19:56:01,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:01,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449781282] [2024-10-14 19:56:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:01,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:01,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:01,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:01,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:56:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:01,799 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:56:01,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:01,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:01,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:01,817 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:01,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:01,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449781282] [2024-10-14 19:56:01,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449781282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:01,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:01,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:56:01,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330642774] [2024-10-14 19:56:01,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:01,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:01,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:01,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:01,866 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-10-14 19:56:01,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:01,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:01,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-10-14 19:56:01,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:02,013 INFO L124 PetriNetUnfolderBase]: 291/534 cut-off events. [2024-10-14 19:56:02,014 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:56:02,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1017 conditions, 534 events. 291/534 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 2649 event pairs, 171 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 973. Up to 434 conditions per place. [2024-10-14 19:56:02,016 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 33 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-10-14 19:56:02,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 216 flow [2024-10-14 19:56:02,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-10-14 19:56:02,018 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44339622641509435 [2024-10-14 19:56:02,018 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 152 flow. Second operand 4 states and 94 transitions. [2024-10-14 19:56:02,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 216 flow [2024-10-14 19:56:02,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:56:02,020 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 150 flow [2024-10-14 19:56:02,020 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2024-10-14 19:56:02,021 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-10-14 19:56:02,021 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 150 flow [2024-10-14 19:56:02,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:02,021 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:02,021 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-14 19:56:02,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-14 19:56:02,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:02,225 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:02,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:02,225 INFO L85 PathProgramCache]: Analyzing trace with hash 17549691, now seen corresponding path program 1 times [2024-10-14 19:56:02,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:02,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034881618] [2024-10-14 19:56:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:02,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:02,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:02,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:02,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 19:56:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:02,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:56:02,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:02,287 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 [2024-10-14 19:56:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:02,335 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:02,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:02,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034881618] [2024-10-14 19:56:02,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034881618] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:02,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:02,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:56:02,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039897109] [2024-10-14 19:56:02,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:02,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:02,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:02,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 53 [2024-10-14 19:56:02,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:02,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:02,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 53 [2024-10-14 19:56:02,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:02,574 INFO L124 PetriNetUnfolderBase]: 275/512 cut-off events. [2024-10-14 19:56:02,575 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 19:56:02,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 512 events. 275/512 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2587 event pairs, 153 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 921. Up to 403 conditions per place. [2024-10-14 19:56:02,578 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 31 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-10-14 19:56:02,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 218 flow [2024-10-14 19:56:02,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:02,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:02,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-10-14 19:56:02,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2024-10-14 19:56:02,580 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 150 flow. Second operand 4 states and 110 transitions. [2024-10-14 19:56:02,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 218 flow [2024-10-14 19:56:02,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:02,582 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 152 flow [2024-10-14 19:56:02,582 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-10-14 19:56:02,583 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-10-14 19:56:02,583 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 152 flow [2024-10-14 19:56:02,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:02,583 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:02,583 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:56:02,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-14 19:56:02,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:02,784 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:02,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash 544030810, now seen corresponding path program 1 times [2024-10-14 19:56:02,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:02,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126047103] [2024-10-14 19:56:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:02,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:02,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:02,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:02,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:56:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:02,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:56:02,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:02,855 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 [2024-10-14 19:56:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:03,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:03,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:03,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126047103] [2024-10-14 19:56:03,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126047103] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:03,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:03,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:56:03,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702662807] [2024-10-14 19:56:03,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:03,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:56:03,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:03,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:56:03,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:56:03,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-14 19:56:03,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 152 flow. Second operand has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:03,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:03,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-14 19:56:03,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:04,331 INFO L124 PetriNetUnfolderBase]: 281/530 cut-off events. [2024-10-14 19:56:04,331 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 19:56:04,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038 conditions, 530 events. 281/530 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2670 event pairs, 153 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 922. Up to 415 conditions per place. [2024-10-14 19:56:04,334 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 30 selfloop transitions, 25 changer transitions 0/65 dead transitions. [2024-10-14 19:56:04,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 355 flow [2024-10-14 19:56:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:56:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:56:04,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-10-14 19:56:04,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47358490566037736 [2024-10-14 19:56:04,338 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 152 flow. Second operand 10 states and 251 transitions. [2024-10-14 19:56:04,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 355 flow [2024-10-14 19:56:04,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:04,342 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 314 flow [2024-10-14 19:56:04,343 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=314, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2024-10-14 19:56:04,344 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-10-14 19:56:04,345 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 314 flow [2024-10-14 19:56:04,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:04,345 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:04,345 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:04,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:04,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:04,548 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:04,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1679151069, now seen corresponding path program 1 times [2024-10-14 19:56:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:04,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848625163] [2024-10-14 19:56:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:04,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:04,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:04,552 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:04,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:56:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:04,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:56:04,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:04,657 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:04,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:04,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848625163] [2024-10-14 19:56:04,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848625163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:04,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:04,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:56:04,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492424589] [2024-10-14 19:56:04,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:04,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:56:04,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:04,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:56:04,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:56:04,727 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-10-14 19:56:04,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 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) [2024-10-14 19:56:04,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:04,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-10-14 19:56:04,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:04,987 INFO L124 PetriNetUnfolderBase]: 542/903 cut-off events. [2024-10-14 19:56:04,988 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-14 19:56:04,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1870 conditions, 903 events. 542/903 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 4773 event pairs, 136 based on Foata normal form. 0/596 useless extension candidates. Maximal degree in co-relation 1806. Up to 486 conditions per place. [2024-10-14 19:56:04,992 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 68 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2024-10-14 19:56:04,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 509 flow [2024-10-14 19:56:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:56:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:56:04,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-10-14 19:56:04,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-10-14 19:56:04,994 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 314 flow. Second operand 5 states and 140 transitions. [2024-10-14 19:56:04,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 509 flow [2024-10-14 19:56:04,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 445 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-10-14 19:56:04,999 INFO L231 Difference]: Finished difference. Result has 60 places, 66 transitions, 278 flow [2024-10-14 19:56:05,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=66} [2024-10-14 19:56:05,002 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2024-10-14 19:56:05,002 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 66 transitions, 278 flow [2024-10-14 19:56:05,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 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) [2024-10-14 19:56:05,002 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:05,002 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:05,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-14 19:56:05,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:05,203 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:05,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:05,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1243542403, now seen corresponding path program 1 times [2024-10-14 19:56:05,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:05,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093548902] [2024-10-14 19:56:05,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:05,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:05,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:05,207 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:05,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-14 19:56:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:05,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:56:05,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:05,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:05,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:05,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093548902] [2024-10-14 19:56:05,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093548902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:05,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:05,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:05,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628550618] [2024-10-14 19:56:05,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:05,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:05,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:05,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:05,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:05,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-10-14 19:56:05,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 66 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:05,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:05,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-10-14 19:56:05,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:05,558 INFO L124 PetriNetUnfolderBase]: 490/961 cut-off events. [2024-10-14 19:56:05,559 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-14 19:56:05,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2012 conditions, 961 events. 490/961 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5691 event pairs, 312 based on Foata normal form. 27/733 useless extension candidates. Maximal degree in co-relation 1930. Up to 677 conditions per place. [2024-10-14 19:56:05,564 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 79 selfloop transitions, 3 changer transitions 1/95 dead transitions. [2024-10-14 19:56:05,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 576 flow [2024-10-14 19:56:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-10-14 19:56:05,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6556603773584906 [2024-10-14 19:56:05,567 INFO L175 Difference]: Start difference. First operand has 60 places, 66 transitions, 278 flow. Second operand 4 states and 139 transitions. [2024-10-14 19:56:05,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 576 flow [2024-10-14 19:56:05,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 550 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:05,570 INFO L231 Difference]: Finished difference. Result has 61 places, 66 transitions, 285 flow [2024-10-14 19:56:05,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=61, PETRI_TRANSITIONS=66} [2024-10-14 19:56:05,570 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-10-14 19:56:05,570 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 66 transitions, 285 flow [2024-10-14 19:56:05,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:05,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:05,570 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:56:05,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-14 19:56:05,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:05,771 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:05,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:05,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1944911754, now seen corresponding path program 2 times [2024-10-14 19:56:05,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:05,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97918770] [2024-10-14 19:56:05,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:56:05,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:05,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:05,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:05,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-14 19:56:05,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:56:05,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:05,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:56:05,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:05,849 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 [2024-10-14 19:56:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:06,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:06,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:06,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97918770] [2024-10-14 19:56:06,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [97918770] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:06,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:06,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:56:06,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884285698] [2024-10-14 19:56:06,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:06,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:56:06,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:06,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:56:06,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:56:07,296 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-14 19:56:07,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 66 transitions, 285 flow. Second operand has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:07,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:07,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-14 19:56:07,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:14,969 INFO L124 PetriNetUnfolderBase]: 508/1015 cut-off events. [2024-10-14 19:56:14,970 INFO L125 PetriNetUnfolderBase]: For 232/284 co-relation queries the response was YES. [2024-10-14 19:56:14,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 1015 events. 508/1015 cut-off events. For 232/284 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6138 event pairs, 312 based on Foata normal form. 18/751 useless extension candidates. Maximal degree in co-relation 2182. Up to 791 conditions per place. [2024-10-14 19:56:14,974 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 31 selfloop transitions, 61 changer transitions 0/102 dead transitions. [2024-10-14 19:56:14,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 102 transitions, 655 flow [2024-10-14 19:56:14,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:56:14,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:56:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 521 transitions. [2024-10-14 19:56:14,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4468267581475129 [2024-10-14 19:56:14,977 INFO L175 Difference]: Start difference. First operand has 61 places, 66 transitions, 285 flow. Second operand 22 states and 521 transitions. [2024-10-14 19:56:14,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 102 transitions, 655 flow [2024-10-14 19:56:14,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 102 transitions, 651 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 19:56:14,980 INFO L231 Difference]: Finished difference. Result has 87 places, 102 transitions, 647 flow [2024-10-14 19:56:14,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=647, PETRI_PLACES=87, PETRI_TRANSITIONS=102} [2024-10-14 19:56:14,980 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-10-14 19:56:14,981 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 102 transitions, 647 flow [2024-10-14 19:56:14,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:14,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:14,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:14,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-14 19:56:15,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:15,185 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:15,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:15,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1204978803, now seen corresponding path program 1 times [2024-10-14 19:56:15,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:15,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260132915] [2024-10-14 19:56:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:15,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:15,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:15,187 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:15,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-14 19:56:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:15,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:56:15,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:15,271 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:15,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:15,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260132915] [2024-10-14 19:56:15,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260132915] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:15,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:15,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:56:15,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237836470] [2024-10-14 19:56:15,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:15,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:56:15,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:56:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:56:15,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-10-14 19:56:15,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 102 transitions, 647 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:15,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:15,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-10-14 19:56:15,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:15,455 INFO L124 PetriNetUnfolderBase]: 506/1013 cut-off events. [2024-10-14 19:56:15,455 INFO L125 PetriNetUnfolderBase]: For 246/298 co-relation queries the response was YES. [2024-10-14 19:56:15,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2600 conditions, 1013 events. 506/1013 cut-off events. For 246/298 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6089 event pairs, 312 based on Foata normal form. 2/751 useless extension candidates. Maximal degree in co-relation 2477. Up to 842 conditions per place. [2024-10-14 19:56:15,460 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 77 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-10-14 19:56:15,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 816 flow [2024-10-14 19:56:15,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:56:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:56:15,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-10-14 19:56:15,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5974842767295597 [2024-10-14 19:56:15,462 INFO L175 Difference]: Start difference. First operand has 87 places, 102 transitions, 647 flow. Second operand 3 states and 95 transitions. [2024-10-14 19:56:15,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 816 flow [2024-10-14 19:56:15,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 101 transitions, 649 flow, removed 47 selfloop flow, removed 10 redundant places. [2024-10-14 19:56:15,468 INFO L231 Difference]: Finished difference. Result has 79 places, 101 transitions, 495 flow [2024-10-14 19:56:15,469 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=495, PETRI_PLACES=79, PETRI_TRANSITIONS=101} [2024-10-14 19:56:15,469 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-10-14 19:56:15,470 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 101 transitions, 495 flow [2024-10-14 19:56:15,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:15,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:15,470 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:15,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-14 19:56:15,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:15,671 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:15,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1342711260, now seen corresponding path program 1 times [2024-10-14 19:56:15,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285716021] [2024-10-14 19:56:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:15,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:15,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:15,673 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:15,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-14 19:56:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:15,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 19:56:15,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:15,734 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 [2024-10-14 19:56:15,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:15,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:16,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:16,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285716021] [2024-10-14 19:56:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285716021] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:16,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-14 19:56:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658828079] [2024-10-14 19:56:16,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:16,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:56:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:56:16,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:56:16,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-10-14 19:56:16,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 101 transitions, 495 flow. Second operand has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:16,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:16,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-10-14 19:56:16,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:18,250 INFO L124 PetriNetUnfolderBase]: 1276/2121 cut-off events. [2024-10-14 19:56:18,251 INFO L125 PetriNetUnfolderBase]: For 300/336 co-relation queries the response was YES. [2024-10-14 19:56:18,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5224 conditions, 2121 events. 1276/2121 cut-off events. For 300/336 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11857 event pairs, 156 based on Foata normal form. 144/1656 useless extension candidates. Maximal degree in co-relation 5119. Up to 637 conditions per place. [2024-10-14 19:56:18,260 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 160 selfloop transitions, 32 changer transitions 0/200 dead transitions. [2024-10-14 19:56:18,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 200 transitions, 1153 flow [2024-10-14 19:56:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-14 19:56:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-14 19:56:18,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 335 transitions. [2024-10-14 19:56:18,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5267295597484277 [2024-10-14 19:56:18,262 INFO L175 Difference]: Start difference. First operand has 79 places, 101 transitions, 495 flow. Second operand 12 states and 335 transitions. [2024-10-14 19:56:18,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 200 transitions, 1153 flow [2024-10-14 19:56:18,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 200 transitions, 1141 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:56:18,270 INFO L231 Difference]: Finished difference. Result has 93 places, 108 transitions, 602 flow [2024-10-14 19:56:18,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=602, PETRI_PLACES=93, PETRI_TRANSITIONS=108} [2024-10-14 19:56:18,271 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-10-14 19:56:18,271 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 108 transitions, 602 flow [2024-10-14 19:56:18,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.166666666666668) internal successors, (218), 12 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:18,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:18,271 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:18,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-14 19:56:18,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:18,472 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:18,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:18,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1867200092, now seen corresponding path program 1 times [2024-10-14 19:56:18,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:18,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842717082] [2024-10-14 19:56:18,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:18,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:18,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:18,474 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:18,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-14 19:56:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:18,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:56:18,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:18,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:18,605 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-14 19:56:18,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-14 19:56:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:56:18,637 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:18,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:18,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842717082] [2024-10-14 19:56:18,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842717082] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:18,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:18,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:18,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448003098] [2024-10-14 19:56:18,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:18,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:18,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:18,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:18,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-14 19:56:18,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 108 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:18,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:18,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-14 19:56:18,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:18,875 INFO L124 PetriNetUnfolderBase]: 716/1430 cut-off events. [2024-10-14 19:56:18,876 INFO L125 PetriNetUnfolderBase]: For 687/713 co-relation queries the response was YES. [2024-10-14 19:56:18,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 1430 events. 716/1430 cut-off events. For 687/713 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8554 event pairs, 455 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 3746. Up to 1104 conditions per place. [2024-10-14 19:56:18,884 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 68 selfloop transitions, 22 changer transitions 0/106 dead transitions. [2024-10-14 19:56:18,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 774 flow [2024-10-14 19:56:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:56:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:56:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-10-14 19:56:18,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4641509433962264 [2024-10-14 19:56:18,886 INFO L175 Difference]: Start difference. First operand has 93 places, 108 transitions, 602 flow. Second operand 5 states and 123 transitions. [2024-10-14 19:56:18,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 774 flow [2024-10-14 19:56:18,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 735 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:18,893 INFO L231 Difference]: Finished difference. Result has 93 places, 106 transitions, 599 flow [2024-10-14 19:56:18,893 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=599, PETRI_PLACES=93, PETRI_TRANSITIONS=106} [2024-10-14 19:56:18,895 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-10-14 19:56:18,896 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 106 transitions, 599 flow [2024-10-14 19:56:18,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:18,896 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:18,896 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:18,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:19,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:19,097 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:19,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1867200091, now seen corresponding path program 1 times [2024-10-14 19:56:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:19,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002991534] [2024-10-14 19:56:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:19,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:19,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:19,099 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:19,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-14 19:56:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:19,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 19:56:19,185 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:19,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:19,203 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 [2024-10-14 19:56:19,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:56:19,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 19:56:19,324 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:56:19,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:56:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:19,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:20,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:20,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002991534] [2024-10-14 19:56:20,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002991534] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:20,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:20,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:56:20,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25771607] [2024-10-14 19:56:20,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:20,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:56:20,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:20,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:56:20,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:56:21,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 53 [2024-10-14 19:56:21,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 106 transitions, 599 flow. Second operand has 10 states, 10 states have (on average 19.2) internal successors, (192), 10 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:21,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:21,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 53 [2024-10-14 19:56:21,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:26,750 INFO L124 PetriNetUnfolderBase]: 1500/2946 cut-off events. [2024-10-14 19:56:26,751 INFO L125 PetriNetUnfolderBase]: For 1290/1336 co-relation queries the response was YES. [2024-10-14 19:56:26,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7717 conditions, 2946 events. 1500/2946 cut-off events. For 1290/1336 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 19927 event pairs, 935 based on Foata normal form. 6/2579 useless extension candidates. Maximal degree in co-relation 7532. Up to 912 conditions per place. [2024-10-14 19:56:26,766 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 114 selfloop transitions, 92 changer transitions 0/220 dead transitions. [2024-10-14 19:56:26,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 220 transitions, 1667 flow [2024-10-14 19:56:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 19:56:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 19:56:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 331 transitions. [2024-10-14 19:56:26,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44609164420485176 [2024-10-14 19:56:26,771 INFO L175 Difference]: Start difference. First operand has 93 places, 106 transitions, 599 flow. Second operand 14 states and 331 transitions. [2024-10-14 19:56:26,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 220 transitions, 1667 flow [2024-10-14 19:56:26,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 220 transitions, 1612 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:56:26,804 INFO L231 Difference]: Finished difference. Result has 108 places, 154 transitions, 1146 flow [2024-10-14 19:56:26,804 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1146, PETRI_PLACES=108, PETRI_TRANSITIONS=154} [2024-10-14 19:56:26,805 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 56 predicate places. [2024-10-14 19:56:26,805 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 154 transitions, 1146 flow [2024-10-14 19:56:26,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.2) internal successors, (192), 10 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:26,805 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:26,805 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:56:26,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-14 19:56:27,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:27,006 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:27,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:27,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1430331509, now seen corresponding path program 2 times [2024-10-14 19:56:27,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:27,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633150217] [2024-10-14 19:56:27,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:56:27,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:27,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:27,009 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:27,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-14 19:56:27,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:56:27,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:27,073 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:56:27,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:27,082 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 [2024-10-14 19:56:27,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:56:27,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:56:27,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-14 19:56:27,206 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:56:27,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:56:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-14 19:56:27,299 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:27,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:27,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633150217] [2024-10-14 19:56:27,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633150217] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:27,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:27,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:27,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258190960] [2024-10-14 19:56:27,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:27,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:27,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:27,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:27,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-14 19:56:27,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 154 transitions, 1146 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:27,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:27,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-14 19:56:27,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:27,689 INFO L124 PetriNetUnfolderBase]: 1303/2650 cut-off events. [2024-10-14 19:56:27,689 INFO L125 PetriNetUnfolderBase]: For 1876/1914 co-relation queries the response was YES. [2024-10-14 19:56:27,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7074 conditions, 2650 events. 1303/2650 cut-off events. For 1876/1914 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17630 event pairs, 814 based on Foata normal form. 115/2524 useless extension candidates. Maximal degree in co-relation 6855. Up to 2115 conditions per place. [2024-10-14 19:56:27,707 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 124 selfloop transitions, 12 changer transitions 0/152 dead transitions. [2024-10-14 19:56:27,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 152 transitions, 1402 flow [2024-10-14 19:56:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:56:27,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:56:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-14 19:56:27,709 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4811320754716981 [2024-10-14 19:56:27,709 INFO L175 Difference]: Start difference. First operand has 108 places, 154 transitions, 1146 flow. Second operand 4 states and 102 transitions. [2024-10-14 19:56:27,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 152 transitions, 1402 flow [2024-10-14 19:56:27,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 152 transitions, 1379 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:27,717 INFO L231 Difference]: Finished difference. Result has 107 places, 152 transitions, 1131 flow [2024-10-14 19:56:27,718 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1131, PETRI_PLACES=107, PETRI_TRANSITIONS=152} [2024-10-14 19:56:27,719 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 55 predicate places. [2024-10-14 19:56:27,719 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 152 transitions, 1131 flow [2024-10-14 19:56:27,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:27,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:27,719 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] [2024-10-14 19:56:27,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:27,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:27,919 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:27,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:27,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1324904068, now seen corresponding path program 1 times [2024-10-14 19:56:27,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:27,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716262748] [2024-10-14 19:56:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:56:27,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:27,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:27,923 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:27,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-14 19:56:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:56:27,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:56:27,984 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:56:28,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:28,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:28,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716262748] [2024-10-14 19:56:28,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716262748] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:28,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:28,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:56:28,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212871922] [2024-10-14 19:56:28,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:28,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:56:28,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:28,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:56:28,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:56:28,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 53 [2024-10-14 19:56:28,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 152 transitions, 1131 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:28,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:28,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 53 [2024-10-14 19:56:28,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:28,610 INFO L124 PetriNetUnfolderBase]: 2522/4673 cut-off events. [2024-10-14 19:56:28,610 INFO L125 PetriNetUnfolderBase]: For 1867/1867 co-relation queries the response was YES. [2024-10-14 19:56:28,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12238 conditions, 4673 events. 2522/4673 cut-off events. For 1867/1867 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 30202 event pairs, 434 based on Foata normal form. 196/4535 useless extension candidates. Maximal degree in co-relation 12020. Up to 1614 conditions per place. [2024-10-14 19:56:28,631 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 155 selfloop transitions, 20 changer transitions 0/184 dead transitions. [2024-10-14 19:56:28,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 184 transitions, 1595 flow [2024-10-14 19:56:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:56:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:56:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-10-14 19:56:28,634 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.539622641509434 [2024-10-14 19:56:28,634 INFO L175 Difference]: Start difference. First operand has 107 places, 152 transitions, 1131 flow. Second operand 5 states and 143 transitions. [2024-10-14 19:56:28,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 184 transitions, 1595 flow [2024-10-14 19:56:28,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 184 transitions, 1582 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:56:28,647 INFO L231 Difference]: Finished difference. Result has 112 places, 163 transitions, 1248 flow [2024-10-14 19:56:28,647 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1248, PETRI_PLACES=112, PETRI_TRANSITIONS=163} [2024-10-14 19:56:28,648 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 60 predicate places. [2024-10-14 19:56:28,648 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 163 transitions, 1248 flow [2024-10-14 19:56:28,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:28,649 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:28,649 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] [2024-10-14 19:56:28,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-10-14 19:56:28,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:28,852 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:28,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:28,853 INFO L85 PathProgramCache]: Analyzing trace with hash -601592754, now seen corresponding path program 2 times [2024-10-14 19:56:28,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:28,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861030557] [2024-10-14 19:56:28,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:56:28,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:28,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:28,855 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:28,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-14 19:56:28,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:56:28,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:28,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 19:56:28,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-14 19:56:28,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:56:28,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:28,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861030557] [2024-10-14 19:56:28,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861030557] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:56:28,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:56:28,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:56:28,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503061971] [2024-10-14 19:56:28,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:56:28,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:56:28,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:28,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:56:28,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:56:28,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-10-14 19:56:28,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 163 transitions, 1248 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:28,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:28,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-10-14 19:56:28,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:29,756 INFO L124 PetriNetUnfolderBase]: 2973/5715 cut-off events. [2024-10-14 19:56:29,756 INFO L125 PetriNetUnfolderBase]: For 5715/5961 co-relation queries the response was YES. [2024-10-14 19:56:29,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16800 conditions, 5715 events. 2973/5715 cut-off events. For 5715/5961 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 41048 event pairs, 1145 based on Foata normal form. 54/5291 useless extension candidates. Maximal degree in co-relation 16579. Up to 2317 conditions per place. [2024-10-14 19:56:29,795 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 158 selfloop transitions, 2 changer transitions 1/184 dead transitions. [2024-10-14 19:56:29,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 184 transitions, 1694 flow [2024-10-14 19:56:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:56:29,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:56:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-10-14 19:56:29,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6289308176100629 [2024-10-14 19:56:29,797 INFO L175 Difference]: Start difference. First operand has 112 places, 163 transitions, 1248 flow. Second operand 3 states and 100 transitions. [2024-10-14 19:56:29,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 184 transitions, 1694 flow [2024-10-14 19:56:29,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 184 transitions, 1694 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:56:29,815 INFO L231 Difference]: Finished difference. Result has 115 places, 164 transitions, 1260 flow [2024-10-14 19:56:29,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1248, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1260, PETRI_PLACES=115, PETRI_TRANSITIONS=164} [2024-10-14 19:56:29,816 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 63 predicate places. [2024-10-14 19:56:29,816 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 164 transitions, 1260 flow [2024-10-14 19:56:29,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:29,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:56:29,817 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-14 19:56:29,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-14 19:56:30,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:30,022 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-14 19:56:30,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:56:30,023 INFO L85 PathProgramCache]: Analyzing trace with hash 620171754, now seen corresponding path program 3 times [2024-10-14 19:56:30,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:56:30,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69760344] [2024-10-14 19:56:30,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:56:30,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:56:30,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:56:30,025 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:56:30,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-14 19:56:30,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-14 19:56:30,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:56:30,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 19:56:30,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:56:30,234 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 [2024-10-14 19:56:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:30,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:56:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:56:32,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:56:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69760344] [2024-10-14 19:56:32,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69760344] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:56:32,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:56:32,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-14 19:56:32,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502280183] [2024-10-14 19:56:32,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:56:32,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 19:56:32,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:56:32,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 19:56:32,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-14 19:56:36,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2024-10-14 19:56:36,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 164 transitions, 1260 flow. Second operand has 26 states, 26 states have (on average 20.76923076923077) internal successors, (540), 26 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:56:36,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:56:36,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2024-10-14 19:56:36,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:56:46,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:56:47,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:56:49,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:56:50,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:56:51,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:56:52,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:56:54,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:56:56,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:56:57,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:01,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:03,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:04,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:05,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:06,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:07,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:10,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:11,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:14,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:15,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:17,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:19,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:20,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:23,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:25,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:29,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:57:33,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []