./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-bad-counter-queue2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:56:04,985 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:56:05,065 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:56:05,071 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:56:05,072 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:56:05,097 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:56:05,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:56:05,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:56:05,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:56:05,099 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:56:05,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:56:05,100 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:56:05,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:56:05,101 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:56:05,101 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:56:05,103 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:56:05,106 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:56:05,106 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:56:05,106 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:56:05,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:56:05,107 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:56:05,107 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:56:05,108 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:56:05,108 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:56:05,108 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:56:05,109 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:56:05,109 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:56:05,109 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:56:05,110 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:56:05,110 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:56:05,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:56:05,110 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:56:05,111 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:56:05,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:56:05,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:56:05,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:56:05,112 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:56:05,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:56:05,112 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:56:05,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:56:05,113 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:56:05,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:56:05,115 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec [2024-10-11 19:56:05,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:56:05,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:56:05,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:56:05,392 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:56:05,392 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:56:05,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-10-11 19:56:06,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:56:07,098 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:56:07,099 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-10-11 19:56:07,107 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2ae0203cb/7da892728189491dbef8a9869e02c8c9/FLAG99a02f0cf [2024-10-11 19:56:07,487 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/2ae0203cb/7da892728189491dbef8a9869e02c8c9 [2024-10-11 19:56:07,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:56:07,492 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:56:07,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:07,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:56:07,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:56:07,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:07" (1/1) ... [2024-10-11 19:56:07,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2453756c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:07, skipping insertion in model container [2024-10-11 19:56:07,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:07" (1/1) ... [2024-10-11 19:56:07,525 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:56:07,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:07,786 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-11 19:56:07,787 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23f8a061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:07, skipping insertion in model container [2024-10-11 19:56:07,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:07,788 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:56:07,790 INFO L158 Benchmark]: Toolchain (without parser) took 297.19ms. Allocated memory is still 165.7MB. Free memory was 109.4MB in the beginning and 98.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:56:07,790 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 165.7MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:56:07,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.01ms. Allocated memory is still 165.7MB. Free memory was 109.4MB in the beginning and 98.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-11 19:56:07,793 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 165.7MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.01ms. Allocated memory is still 165.7MB. Free memory was 109.4MB in the beginning and 98.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 90]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:56:09,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:56:10,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:56:10,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:56:10,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:56:10,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:56:10,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:56:10,049 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:56:10,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:56:10,051 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:56:10,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:56:10,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:56:10,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:56:10,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:56:10,054 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:56:10,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:56:10,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:56:10,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:56:10,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:56:10,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:56:10,056 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:56:10,060 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:56:10,060 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:56:10,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:56:10,061 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:56:10,061 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:56:10,061 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:56:10,061 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:56:10,062 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:56:10,062 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:56:10,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:56:10,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:56:10,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:56:10,063 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:56:10,063 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:56:10,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:56:10,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:56:10,075 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:56:10,076 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:56:10,077 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:56:10,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:56:10,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:56:10,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:56:10,079 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:56:10,080 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:56:10,080 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec [2024-10-11 19:56:10,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:56:10,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:56:10,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:56:10,455 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:56:10,457 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:56:10,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-10-11 19:56:12,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:56:12,299 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:56:12,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-10-11 19:56:12,308 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0a8858b47/4724c0b3eeb6481f85c71bf6a3e7637d/FLAGa7041f141 [2024-10-11 19:56:12,320 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/0a8858b47/4724c0b3eeb6481f85c71bf6a3e7637d [2024-10-11 19:56:12,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:56:12,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:56:12,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:12,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:56:12,331 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:56:12,332 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79cb39d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12, skipping insertion in model container [2024-10-11 19:56:12,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,353 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:56:12,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:12,616 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:56:12,621 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:56:12,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:12,658 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:56:12,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:56:12,715 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:56:12,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12 WrapperNode [2024-10-11 19:56:12,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:56:12,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:56:12,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:56:12,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:56:12,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,751 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,785 INFO L138 Inliner]: procedures = 27, calls = 27, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 130 [2024-10-11 19:56:12,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:56:12,789 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:56:12,789 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:56:12,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:56:12,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,836 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-11 19:56:12,838 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,853 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:56:12,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:56:12,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:56:12,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:56:12,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (1/1) ... [2024-10-11 19:56:12,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:56:12,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:56:12,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:56:12,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:56:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:56:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:56:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:56:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:56:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:56:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:56:12,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:56:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:56:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:56:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:56:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:56:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:56:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:56:12,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:56:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:56:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:56:12,958 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:56:13,098 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:56:13,101 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:56:13,524 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:56:13,524 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:56:13,807 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:56:13,808 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 19:56:13,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:56:13 BoogieIcfgContainer [2024-10-11 19:56:13,808 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:56:13,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:56:13,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:56:13,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:56:13,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:56:12" (1/3) ... [2024-10-11 19:56:13,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19124947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:56:13, skipping insertion in model container [2024-10-11 19:56:13,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:56:12" (2/3) ... [2024-10-11 19:56:13,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19124947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:56:13, skipping insertion in model container [2024-10-11 19:56:13,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:56:13" (3/3) ... [2024-10-11 19:56:13,819 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2024-10-11 19:56:13,837 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:56:13,837 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 19:56:13,837 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:56:13,903 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 19:56:13,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 33 transitions, 80 flow [2024-10-11 19:56:13,966 INFO L124 PetriNetUnfolderBase]: 3/31 cut-off events. [2024-10-11 19:56:13,966 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:56:13,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 31 events. 3/31 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 51 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-10-11 19:56:13,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 33 transitions, 80 flow [2024-10-11 19:56:13,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 30 transitions, 72 flow [2024-10-11 19:56:13,988 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:56:13,997 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;@6bdd1161, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:56:13,997 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-11 19:56:14,003 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:56:14,003 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:56:14,004 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:56:14,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:14,005 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:56:14,006 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:14,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:14,011 INFO L85 PathProgramCache]: Analyzing trace with hash 448534, now seen corresponding path program 1 times [2024-10-11 19:56:14,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:14,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047292332] [2024-10-11 19:56:14,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:14,024 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 [2024-10-11 19:56:14,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:14,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:14,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-11 19:56:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:14,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:56:14,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:14,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:56:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:14,187 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:14,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:14,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047292332] [2024-10-11 19:56:14,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047292332] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:14,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:14,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:56:14,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866145017] [2024-10-11 19:56:14,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:14,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:56:14,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:56:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:56:14,247 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:14,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:14,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:14,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:14,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:14,417 INFO L124 PetriNetUnfolderBase]: 128/239 cut-off events. [2024-10-11 19:56:14,418 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-11 19:56:14,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 239 events. 128/239 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 966 event pairs, 100 based on Foata normal form. 1/184 useless extension candidates. Maximal degree in co-relation 434. Up to 221 conditions per place. [2024-10-11 19:56:14,422 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 21 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2024-10-11 19:56:14,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 112 flow [2024-10-11 19:56:14,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:56:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:56:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-10-11 19:56:14,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-10-11 19:56:14,435 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 72 flow. Second operand 3 states and 46 transitions. [2024-10-11 19:56:14,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 112 flow [2024-10-11 19:56:14,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 104 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:56:14,441 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 62 flow [2024-10-11 19:56:14,443 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2024-10-11 19:56:14,447 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2024-10-11 19:56:14,448 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 62 flow [2024-10-11 19:56:14,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:14,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:14,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:56:14,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 19:56:14,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:14,652 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:14,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash 448535, now seen corresponding path program 1 times [2024-10-11 19:56:14,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:14,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901941715] [2024-10-11 19:56:14,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:14,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:14,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:14,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:14,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-11 19:56:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:14,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:56:14,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:14,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:14,868 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:14,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:14,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901941715] [2024-10-11 19:56:14,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901941715] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:14,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:14,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:56:14,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564786023] [2024-10-11 19:56:14,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:14,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:56:14,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:56:14,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:56:14,893 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:14,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:14,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:14,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:14,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:15,220 INFO L124 PetriNetUnfolderBase]: 129/242 cut-off events. [2024-10-11 19:56:15,221 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 19:56:15,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 242 events. 129/242 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 979 event pairs, 100 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 460. Up to 226 conditions per place. [2024-10-11 19:56:15,229 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 23 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-10-11 19:56:15,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 124 flow [2024-10-11 19:56:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:56:15,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:56:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2024-10-11 19:56:15,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-10-11 19:56:15,234 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 62 flow. Second operand 4 states and 56 transitions. [2024-10-11 19:56:15,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 124 flow [2024-10-11 19:56:15,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:56:15,238 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 85 flow [2024-10-11 19:56:15,238 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-10-11 19:56:15,239 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2024-10-11 19:56:15,239 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 85 flow [2024-10-11 19:56:15,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:15,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:15,243 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:56:15,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 19:56:15,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:15,444 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:15,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:15,445 INFO L85 PathProgramCache]: Analyzing trace with hash 431056298, now seen corresponding path program 1 times [2024-10-11 19:56:15,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:15,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810157033] [2024-10-11 19:56:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:15,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:15,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:15,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:15,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-11 19:56:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:15,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:56:15,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:15,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:15,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:15,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:16,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:16,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810157033] [2024-10-11 19:56:16,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810157033] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:16,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:16,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:56:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210825037] [2024-10-11 19:56:16,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:16,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:56:16,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:56:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:56:16,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:16,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 85 flow. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:16,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:16,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:16,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:16,555 INFO L124 PetriNetUnfolderBase]: 132/251 cut-off events. [2024-10-11 19:56:16,555 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-11 19:56:16,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 251 events. 132/251 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1052 event pairs, 100 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 467. Up to 229 conditions per place. [2024-10-11 19:56:16,557 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 23 selfloop transitions, 13 changer transitions 0/39 dead transitions. [2024-10-11 19:56:16,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 193 flow [2024-10-11 19:56:16,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:56:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:56:16,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-10-11 19:56:16,560 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3303030303030303 [2024-10-11 19:56:16,560 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 85 flow. Second operand 10 states and 109 transitions. [2024-10-11 19:56:16,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 193 flow [2024-10-11 19:56:16,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:56:16,562 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 162 flow [2024-10-11 19:56:16,563 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2024-10-11 19:56:16,563 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2024-10-11 19:56:16,563 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 162 flow [2024-10-11 19:56:16,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:16,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:16,564 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:56:16,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-11 19:56:16,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:16,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:16,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:16,765 INFO L85 PathProgramCache]: Analyzing trace with hash 479969322, now seen corresponding path program 1 times [2024-10-11 19:56:16,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:16,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665661827] [2024-10-11 19:56:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:16,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:16,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:16,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:16,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-11 19:56:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:16,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:56:16,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:16,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-11 19:56:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:16,840 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:16,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:16,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665661827] [2024-10-11 19:56:16,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665661827] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:16,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:16,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:56:16,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182231440] [2024-10-11 19:56:16,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:16,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:56:16,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:16,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:56:16,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:56:16,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:16,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:16,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:16,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:16,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:16,959 INFO L124 PetriNetUnfolderBase]: 96/188 cut-off events. [2024-10-11 19:56:16,959 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-11 19:56:16,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 188 events. 96/188 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 696 event pairs, 68 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 382. Up to 163 conditions per place. [2024-10-11 19:56:16,961 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 27 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-10-11 19:56:16,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 224 flow [2024-10-11 19:56:16,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:56:16,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:56:16,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2024-10-11 19:56:16,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-10-11 19:56:16,963 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 162 flow. Second operand 4 states and 51 transitions. [2024-10-11 19:56:16,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 224 flow [2024-10-11 19:56:16,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 194 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-11 19:56:16,966 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 140 flow [2024-10-11 19:56:16,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-10-11 19:56:16,967 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2024-10-11 19:56:16,967 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 140 flow [2024-10-11 19:56:16,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:16,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:16,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:56:16,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-11 19:56:17,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:17,170 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:17,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash 479969323, now seen corresponding path program 1 times [2024-10-11 19:56:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:17,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199621828] [2024-10-11 19:56:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:17,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:17,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:17,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:17,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-11 19:56:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:17,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:56:17,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:17,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:17,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:17,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199621828] [2024-10-11 19:56:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199621828] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:56:17,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563967801] [2024-10-11 19:56:17,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:17,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:56:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:56:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:56:17,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:17,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:17,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:17,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:17,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:17,765 INFO L124 PetriNetUnfolderBase]: 188/332 cut-off events. [2024-10-11 19:56:17,766 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-11 19:56:17,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 332 events. 188/332 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1297 event pairs, 72 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 672. Up to 204 conditions per place. [2024-10-11 19:56:17,771 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 44 selfloop transitions, 11 changer transitions 0/58 dead transitions. [2024-10-11 19:56:17,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 294 flow [2024-10-11 19:56:17,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:56:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:56:17,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-10-11 19:56:17,773 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-10-11 19:56:17,773 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 140 flow. Second operand 6 states and 87 transitions. [2024-10-11 19:56:17,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 294 flow [2024-10-11 19:56:17,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:56:17,776 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 182 flow [2024-10-11 19:56:17,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-10-11 19:56:17,777 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2024-10-11 19:56:17,778 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 182 flow [2024-10-11 19:56:17,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:17,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:17,778 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:17,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 19:56:17,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:17,982 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:17,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:17,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1678370231, now seen corresponding path program 1 times [2024-10-11 19:56:17,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:17,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460423678] [2024-10-11 19:56:17,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:17,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:17,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:17,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:17,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-11 19:56:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:18,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 19:56:18,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:18,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:18,223 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:18,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460423678] [2024-10-11 19:56:18,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460423678] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:18,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:18,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:56:18,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494661238] [2024-10-11 19:56:18,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:18,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:56:18,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:18,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:56:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:56:18,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:18,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:18,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:18,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:18,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:18,622 INFO L124 PetriNetUnfolderBase]: 299/514 cut-off events. [2024-10-11 19:56:18,623 INFO L125 PetriNetUnfolderBase]: For 166/186 co-relation queries the response was YES. [2024-10-11 19:56:18,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 514 events. 299/514 cut-off events. For 166/186 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2005 event pairs, 132 based on Foata normal form. 29/504 useless extension candidates. Maximal degree in co-relation 1290. Up to 325 conditions per place. [2024-10-11 19:56:18,628 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 50 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2024-10-11 19:56:18,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 394 flow [2024-10-11 19:56:18,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:56:18,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:56:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-10-11 19:56:18,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-10-11 19:56:18,630 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 182 flow. Second operand 6 states and 85 transitions. [2024-10-11 19:56:18,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 394 flow [2024-10-11 19:56:18,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 373 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:56:18,633 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 216 flow [2024-10-11 19:56:18,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2024-10-11 19:56:18,634 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2024-10-11 19:56:18,635 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 216 flow [2024-10-11 19:56:18,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:18,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:18,635 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:18,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-11 19:56:18,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:18,836 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:18,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:18,837 INFO L85 PathProgramCache]: Analyzing trace with hash 820428740, now seen corresponding path program 1 times [2024-10-11 19:56:18,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:18,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886179060] [2024-10-11 19:56:18,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:18,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:18,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:18,840 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:18,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-11 19:56:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:18,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:56:18,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:18,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:19,062 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:19,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:19,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886179060] [2024-10-11 19:56:19,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886179060] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:19,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:19,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:56:19,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295168157] [2024-10-11 19:56:19,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:19,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 19:56:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 19:56:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-11 19:56:19,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-10-11 19:56:19,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:19,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:19,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-10-11 19:56:19,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:19,340 INFO L124 PetriNetUnfolderBase]: 282/535 cut-off events. [2024-10-11 19:56:19,340 INFO L125 PetriNetUnfolderBase]: For 339/390 co-relation queries the response was YES. [2024-10-11 19:56:19,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 535 events. 282/535 cut-off events. For 339/390 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2316 event pairs, 182 based on Foata normal form. 55/584 useless extension candidates. Maximal degree in co-relation 1541. Up to 419 conditions per place. [2024-10-11 19:56:19,344 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 50 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-10-11 19:56:19,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 379 flow [2024-10-11 19:56:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 19:56:19,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 19:56:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-10-11 19:56:19,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.503030303030303 [2024-10-11 19:56:19,346 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 216 flow. Second operand 5 states and 83 transitions. [2024-10-11 19:56:19,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 379 flow [2024-10-11 19:56:19,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 360 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:56:19,351 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 238 flow [2024-10-11 19:56:19,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-10-11 19:56:19,351 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2024-10-11 19:56:19,352 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 238 flow [2024-10-11 19:56:19,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:19,352 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:19,352 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:56:19,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:19,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:19,553 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:19,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1403206115, now seen corresponding path program 2 times [2024-10-11 19:56:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:19,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38802508] [2024-10-11 19:56:19,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:56:19,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:19,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:19,556 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:19,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-11 19:56:19,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:56:19,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:56:19,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 19:56:19,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:19,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:19,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:20,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:20,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38802508] [2024-10-11 19:56:20,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38802508] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:20,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:20,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:56:20,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138786608] [2024-10-11 19:56:20,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:20,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:56:20,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:20,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:56:20,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:56:20,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:20,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 238 flow. Second operand has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:20,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:20,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:20,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:23,198 INFO L124 PetriNetUnfolderBase]: 290/556 cut-off events. [2024-10-11 19:56:23,199 INFO L125 PetriNetUnfolderBase]: For 689/730 co-relation queries the response was YES. [2024-10-11 19:56:23,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 556 events. 290/556 cut-off events. For 689/730 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2351 event pairs, 191 based on Foata normal form. 38/584 useless extension candidates. Maximal degree in co-relation 1703. Up to 472 conditions per place. [2024-10-11 19:56:23,204 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 29 selfloop transitions, 31 changer transitions 0/65 dead transitions. [2024-10-11 19:56:23,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 65 transitions, 448 flow [2024-10-11 19:56:23,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 19:56:23,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 19:56:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 212 transitions. [2024-10-11 19:56:23,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29201101928374656 [2024-10-11 19:56:23,210 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 238 flow. Second operand 22 states and 212 transitions. [2024-10-11 19:56:23,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 65 transitions, 448 flow [2024-10-11 19:56:23,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 443 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:56:23,217 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 415 flow [2024-10-11 19:56:23,218 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=415, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-10-11 19:56:23,219 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 44 predicate places. [2024-10-11 19:56:23,219 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 415 flow [2024-10-11 19:56:23,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:23,219 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:23,219 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:23,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-11 19:56:23,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:23,420 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:23,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:23,421 INFO L85 PathProgramCache]: Analyzing trace with hash 300389143, now seen corresponding path program 1 times [2024-10-11 19:56:23,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:23,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683564039] [2024-10-11 19:56:23,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:23,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:23,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:23,423 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:23,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-11 19:56:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:23,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:56:23,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:23,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:23,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:23,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:24,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:24,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683564039] [2024-10-11 19:56:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683564039] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:24,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:24,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:56:24,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038962482] [2024-10-11 19:56:24,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:24,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:56:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:56:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:56:24,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:24,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 415 flow. Second operand has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:24,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:24,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:24,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:26,249 INFO L124 PetriNetUnfolderBase]: 643/1104 cut-off events. [2024-10-11 19:56:26,250 INFO L125 PetriNetUnfolderBase]: For 1029/1100 co-relation queries the response was YES. [2024-10-11 19:56:26,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3653 conditions, 1104 events. 643/1104 cut-off events. For 1029/1100 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4752 event pairs, 104 based on Foata normal form. 104/1194 useless extension candidates. Maximal degree in co-relation 3598. Up to 303 conditions per place. [2024-10-11 19:56:26,259 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 140 selfloop transitions, 30 changer transitions 0/174 dead transitions. [2024-10-11 19:56:26,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 174 transitions, 1222 flow [2024-10-11 19:56:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 19:56:26,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 19:56:26,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 207 transitions. [2024-10-11 19:56:26,262 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4825174825174825 [2024-10-11 19:56:26,263 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 415 flow. Second operand 13 states and 207 transitions. [2024-10-11 19:56:26,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 174 transitions, 1222 flow [2024-10-11 19:56:26,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 174 transitions, 1142 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-11 19:56:26,270 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 493 flow [2024-10-11 19:56:26,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=493, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-10-11 19:56:26,273 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 51 predicate places. [2024-10-11 19:56:26,274 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 493 flow [2024-10-11 19:56:26,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.571428571428571) internal successors, (120), 14 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:26,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:26,274 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:26,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-11 19:56:26,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:26,475 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:26,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:26,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1071875186, now seen corresponding path program 1 times [2024-10-11 19:56:26,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:26,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812864264] [2024-10-11 19:56:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:26,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:26,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:26,477 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:26,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-11 19:56:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:26,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 19:56:26,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:26,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:26,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:26,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:27,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:27,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812864264] [2024-10-11 19:56:27,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812864264] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:27,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:27,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:56:27,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953468736] [2024-10-11 19:56:27,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:27,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:56:27,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:27,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:56:27,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:56:27,528 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:27,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 493 flow. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:27,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:27,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:27,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:29,065 INFO L124 PetriNetUnfolderBase]: 1142/1907 cut-off events. [2024-10-11 19:56:29,065 INFO L125 PetriNetUnfolderBase]: For 4992/5186 co-relation queries the response was YES. [2024-10-11 19:56:29,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7437 conditions, 1907 events. 1142/1907 cut-off events. For 4992/5186 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8701 event pairs, 236 based on Foata normal form. 180/2047 useless extension candidates. Maximal degree in co-relation 7383. Up to 551 conditions per place. [2024-10-11 19:56:29,083 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 195 selfloop transitions, 29 changer transitions 2/234 dead transitions. [2024-10-11 19:56:29,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 234 transitions, 2117 flow [2024-10-11 19:56:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 19:56:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 19:56:29,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 197 transitions. [2024-10-11 19:56:29,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4592074592074592 [2024-10-11 19:56:29,087 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 493 flow. Second operand 13 states and 197 transitions. [2024-10-11 19:56:29,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 234 transitions, 2117 flow [2024-10-11 19:56:29,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 234 transitions, 1934 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-10-11 19:56:29,100 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 616 flow [2024-10-11 19:56:29,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=616, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2024-10-11 19:56:29,143 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 63 predicate places. [2024-10-11 19:56:29,144 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 616 flow [2024-10-11 19:56:29,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 14 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:29,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:29,145 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:29,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-11 19:56:29,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:29,346 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:29,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:29,346 INFO L85 PathProgramCache]: Analyzing trace with hash 425326477, now seen corresponding path program 1 times [2024-10-11 19:56:29,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:29,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603788854] [2024-10-11 19:56:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:29,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:29,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:29,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:29,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-11 19:56:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:29,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:56:29,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:29,421 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:56:29,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:29,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603788854] [2024-10-11 19:56:29,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603788854] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:56:29,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:56:29,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:56:29,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226996245] [2024-10-11 19:56:29,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:56:29,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:56:29,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:29,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:56:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:56:29,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-10-11 19:56:29,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 616 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:29,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:29,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-10-11 19:56:29,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:29,709 INFO L124 PetriNetUnfolderBase]: 966/1766 cut-off events. [2024-10-11 19:56:29,709 INFO L125 PetriNetUnfolderBase]: For 5672/5781 co-relation queries the response was YES. [2024-10-11 19:56:29,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7473 conditions, 1766 events. 966/1766 cut-off events. For 5672/5781 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 8499 event pairs, 320 based on Foata normal form. 50/1790 useless extension candidates. Maximal degree in co-relation 7414. Up to 1367 conditions per place. [2024-10-11 19:56:29,729 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 77 selfloop transitions, 5 changer transitions 4/100 dead transitions. [2024-10-11 19:56:29,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 869 flow [2024-10-11 19:56:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:56:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:56:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-10-11 19:56:29,731 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-10-11 19:56:29,731 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 616 flow. Second operand 3 states and 57 transitions. [2024-10-11 19:56:29,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 100 transitions, 869 flow [2024-10-11 19:56:29,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 100 transitions, 831 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-11 19:56:29,742 INFO L231 Difference]: Finished difference. Result has 96 places, 88 transitions, 615 flow [2024-10-11 19:56:29,743 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=615, PETRI_PLACES=96, PETRI_TRANSITIONS=88} [2024-10-11 19:56:29,744 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 62 predicate places. [2024-10-11 19:56:29,744 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 88 transitions, 615 flow [2024-10-11 19:56:29,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:29,744 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:29,744 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:29,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:29,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:29,945 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:29,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash -459207061, now seen corresponding path program 1 times [2024-10-11 19:56:29,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:29,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763447150] [2024-10-11 19:56:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:29,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:29,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:29,948 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:29,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-11 19:56:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:30,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:56:30,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:30,167 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:30,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:30,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763447150] [2024-10-11 19:56:30,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763447150] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:30,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:30,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-11 19:56:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801070474] [2024-10-11 19:56:30,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:30,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:56:30,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:56:30,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:56:30,357 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:30,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 88 transitions, 615 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:30,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:30,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:30,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:31,065 INFO L124 PetriNetUnfolderBase]: 2177/3636 cut-off events. [2024-10-11 19:56:31,066 INFO L125 PetriNetUnfolderBase]: For 13062/13467 co-relation queries the response was YES. [2024-10-11 19:56:31,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15607 conditions, 3636 events. 2177/3636 cut-off events. For 13062/13467 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 19251 event pairs, 618 based on Foata normal form. 235/3804 useless extension candidates. Maximal degree in co-relation 15552. Up to 1025 conditions per place. [2024-10-11 19:56:31,104 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 150 selfloop transitions, 23 changer transitions 0/181 dead transitions. [2024-10-11 19:56:31,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 181 transitions, 1627 flow [2024-10-11 19:56:31,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:56:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:56:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-10-11 19:56:31,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4303030303030303 [2024-10-11 19:56:31,106 INFO L175 Difference]: Start difference. First operand has 96 places, 88 transitions, 615 flow. Second operand 10 states and 142 transitions. [2024-10-11 19:56:31,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 181 transitions, 1627 flow [2024-10-11 19:56:31,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 181 transitions, 1566 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-10-11 19:56:31,123 INFO L231 Difference]: Finished difference. Result has 101 places, 96 transitions, 687 flow [2024-10-11 19:56:31,123 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=687, PETRI_PLACES=101, PETRI_TRANSITIONS=96} [2024-10-11 19:56:31,124 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 67 predicate places. [2024-10-11 19:56:31,124 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 96 transitions, 687 flow [2024-10-11 19:56:31,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:31,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:31,125 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:31,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-10-11 19:56:31,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:31,326 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:31,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:31,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1174945014, now seen corresponding path program 1 times [2024-10-11 19:56:31,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:31,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875093263] [2024-10-11 19:56:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:31,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:31,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:31,328 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:31,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-11 19:56:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:31,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:56:31,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:31,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:31,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:31,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875093263] [2024-10-11 19:56:31,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875093263] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:31,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:31,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-11 19:56:31,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404373809] [2024-10-11 19:56:31,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:31,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:56:31,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:56:31,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:56:31,646 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-10-11 19:56:31,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 96 transitions, 687 flow. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:31,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:31,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-10-11 19:56:31,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:32,457 INFO L124 PetriNetUnfolderBase]: 2087/3582 cut-off events. [2024-10-11 19:56:32,458 INFO L125 PetriNetUnfolderBase]: For 11609/11884 co-relation queries the response was YES. [2024-10-11 19:56:32,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15407 conditions, 3582 events. 2087/3582 cut-off events. For 11609/11884 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19534 event pairs, 579 based on Foata normal form. 194/3746 useless extension candidates. Maximal degree in co-relation 15350. Up to 1013 conditions per place. [2024-10-11 19:56:32,502 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 148 selfloop transitions, 23 changer transitions 0/183 dead transitions. [2024-10-11 19:56:32,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 183 transitions, 1646 flow [2024-10-11 19:56:32,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 19:56:32,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 19:56:32,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-10-11 19:56:32,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-10-11 19:56:32,505 INFO L175 Difference]: Start difference. First operand has 101 places, 96 transitions, 687 flow. Second operand 10 states and 145 transitions. [2024-10-11 19:56:32,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 183 transitions, 1646 flow [2024-10-11 19:56:32,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 183 transitions, 1614 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-10-11 19:56:32,527 INFO L231 Difference]: Finished difference. Result has 106 places, 104 transitions, 764 flow [2024-10-11 19:56:32,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=764, PETRI_PLACES=106, PETRI_TRANSITIONS=104} [2024-10-11 19:56:32,529 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 72 predicate places. [2024-10-11 19:56:32,529 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 104 transitions, 764 flow [2024-10-11 19:56:32,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:32,530 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:32,530 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:32,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-11 19:56:32,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:32,732 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:32,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:32,733 INFO L85 PathProgramCache]: Analyzing trace with hash 495635704, now seen corresponding path program 2 times [2024-10-11 19:56:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:32,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170932838] [2024-10-11 19:56:32,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:56:32,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:32,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:32,738 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:32,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-11 19:56:32,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:56:32,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:56:32,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:56:32,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:32,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:56:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:33,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:56:34,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170932838] [2024-10-11 19:56:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170932838] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:34,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2024-10-11 19:56:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944967029] [2024-10-11 19:56:34,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:34,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:56:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:34,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:56:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:56:34,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-10-11 19:56:34,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 104 transitions, 764 flow. Second operand has 18 states, 18 states have (on average 9.666666666666666) internal successors, (174), 18 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:34,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:34,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-10-11 19:56:34,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:38,361 INFO L124 PetriNetUnfolderBase]: 2213/4038 cut-off events. [2024-10-11 19:56:38,361 INFO L125 PetriNetUnfolderBase]: For 16303/16654 co-relation queries the response was YES. [2024-10-11 19:56:38,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18081 conditions, 4038 events. 2213/4038 cut-off events. For 16303/16654 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 24340 event pairs, 545 based on Foata normal form. 198/4105 useless extension candidates. Maximal degree in co-relation 18024. Up to 1179 conditions per place. [2024-10-11 19:56:38,396 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 282 selfloop transitions, 65 changer transitions 0/366 dead transitions. [2024-10-11 19:56:38,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 366 transitions, 3280 flow [2024-10-11 19:56:38,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 19:56:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 19:56:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 352 transitions. [2024-10-11 19:56:38,400 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-10-11 19:56:38,400 INFO L175 Difference]: Start difference. First operand has 106 places, 104 transitions, 764 flow. Second operand 21 states and 352 transitions. [2024-10-11 19:56:38,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 366 transitions, 3280 flow [2024-10-11 19:56:38,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 366 transitions, 3272 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:56:38,428 INFO L231 Difference]: Finished difference. Result has 127 places, 132 transitions, 1204 flow [2024-10-11 19:56:38,428 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1204, PETRI_PLACES=127, PETRI_TRANSITIONS=132} [2024-10-11 19:56:38,429 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 93 predicate places. [2024-10-11 19:56:38,429 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 132 transitions, 1204 flow [2024-10-11 19:56:38,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.666666666666666) internal successors, (174), 18 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:38,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:56:38,429 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:56:38,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 19:56:38,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:38,631 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:56:38,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:56:38,631 INFO L85 PathProgramCache]: Analyzing trace with hash -855681641, now seen corresponding path program 1 times [2024-10-11 19:56:38,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:56:38,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562699057] [2024-10-11 19:56:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:56:38,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:56:38,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:56:38,633 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:56:38,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-11 19:56:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:56:38,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:56:38,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:56:38,813 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:56:38,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 156 treesize of output 46 [2024-10-11 19:56:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:38,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:56:39,074 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-11 19:56:39,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 226 treesize of output 99 [2024-10-11 19:56:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:56:45,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:56:45,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562699057] [2024-10-11 19:56:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562699057] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:56:45,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:56:45,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-11 19:56:45,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127809114] [2024-10-11 19:56:45,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:56:45,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 19:56:45,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:56:45,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 19:56:45,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 19:56:47,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-10-11 19:56:47,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 132 transitions, 1204 flow. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:56:47,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:56:47,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-10-11 19:56:47,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:55,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 19:56:59,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:57:02,467 INFO L124 PetriNetUnfolderBase]: 2423/4523 cut-off events. [2024-10-11 19:57:02,467 INFO L125 PetriNetUnfolderBase]: For 24014/24274 co-relation queries the response was YES. [2024-10-11 19:57:02,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22332 conditions, 4523 events. 2423/4523 cut-off events. For 24014/24274 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 27696 event pairs, 865 based on Foata normal form. 116/4588 useless extension candidates. Maximal degree in co-relation 22270. Up to 3476 conditions per place. [2024-10-11 19:57:02,499 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 128 selfloop transitions, 35 changer transitions 1/183 dead transitions. [2024-10-11 19:57:02,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 183 transitions, 1975 flow [2024-10-11 19:57:02,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:57:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:57:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-10-11 19:57:02,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-10-11 19:57:02,502 INFO L175 Difference]: Start difference. First operand has 127 places, 132 transitions, 1204 flow. Second operand 6 states and 96 transitions. [2024-10-11 19:57:02,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 183 transitions, 1975 flow [2024-10-11 19:57:02,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 183 transitions, 1888 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-10-11 19:57:02,538 INFO L231 Difference]: Finished difference. Result has 129 places, 156 transitions, 1504 flow [2024-10-11 19:57:02,539 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1504, PETRI_PLACES=129, PETRI_TRANSITIONS=156} [2024-10-11 19:57:02,539 INFO L277 CegarLoopForPetriNet]: 34 programPoint places, 95 predicate places. [2024-10-11 19:57:02,539 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 156 transitions, 1504 flow [2024-10-11 19:57:02,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:02,540 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:57:02,540 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:57:02,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-10-11 19:57:02,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:02,741 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-10-11 19:57:02,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:57:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1883117411, now seen corresponding path program 2 times [2024-10-11 19:57:02,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:57:02,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962158188] [2024-10-11 19:57:02,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:57:02,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:57:02,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:57:02,744 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-11 19:57:02,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-11 19:57:02,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:57:02,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:57:02,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:57:02,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:57:03,706 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 19:57:03,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 128 treesize of output 40 [2024-10-11 19:57:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:57:03,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:57:04,718 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-11 19:57:04,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 183 treesize of output 91 [2024-10-11 19:57:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:57:17,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:57:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962158188] [2024-10-11 19:57:17,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962158188] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:57:17,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:57:17,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-11 19:57:17,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147832533] [2024-10-11 19:57:17,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:57:17,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 19:57:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:57:17,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 19:57:17,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-11 19:57:18,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-10-11 19:57:18,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 156 transitions, 1504 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:57:18,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:57:18,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-10-11 19:57:18,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:57:26,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:57:30,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []