./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/parallel-parallel-sum-equiv.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:51:58,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:51:58,383 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:51:58,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:51:58,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:51:58,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:51:58,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:51:58,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:51:58,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:51:58,416 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:51:58,416 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:51:58,416 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:51:58,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:51:58,417 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:51:58,417 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:51:58,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:51:58,419 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:51:58,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:51:58,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:51:58,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:51:58,419 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:51:58,420 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:51:58,421 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:51:58,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:51:58,421 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:51:58,421 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:51:58,422 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:51:58,422 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:51:58,422 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:51:58,422 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:51:58,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:51:58,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:51:58,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:51:58,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:51:58,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:51:58,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:51:58,424 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:51:58,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:51:58,425 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:51:58,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:51:58,425 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:51:58,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:51:58,426 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-10-14 19:51:58,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:51:58,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:51:58,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:51:58,680 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:51:58,680 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:51:58,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-10-14 19:52:00,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:52:00,234 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:52:00,235 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-10-14 19:52:00,244 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/426d6be3d/fc8ac4fe9fb046cb8074b7871e8a4383/FLAG64514a6b9 [2024-10-14 19:52:00,257 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/426d6be3d/fc8ac4fe9fb046cb8074b7871e8a4383 [2024-10-14 19:52:00,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:52:00,261 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:52:00,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:52:00,264 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:52:00,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:52:00,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:52:00" (1/1) ... [2024-10-14 19:52:00,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee787f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:00, skipping insertion in model container [2024-10-14 19:52:00,269 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:52:00" (1/1) ... [2024-10-14 19:52:00,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:52:00,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:52:00,489 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-14 19:52:00,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c23824e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:00, skipping insertion in model container [2024-10-14 19:52:00,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:52:00,493 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:52:00,495 INFO L158 Benchmark]: Toolchain (without parser) took 232.88ms. Allocated memory is still 184.5MB. Free memory was 116.6MB in the beginning and 105.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 19:52:00,496 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 184.5MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:52:00,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.93ms. Allocated memory is still 184.5MB. Free memory was 116.4MB in the beginning and 105.4MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 19:52:00,497 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 184.5MB. Free memory is still 142.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.93ms. Allocated memory is still 184.5MB. Free memory was 116.4MB in the beginning and 105.4MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 153]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:52:02,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:52:02,371 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:52:02,374 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:52:02,375 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:52:02,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:52:02,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:52:02,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:52:02,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:52:02,401 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:52:02,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:52:02,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:52:02,402 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:52:02,402 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:52:02,402 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:52:02,403 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:52:02,403 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:52:02,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:52:02,406 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:52:02,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:52:02,407 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:52:02,407 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:52:02,407 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:52:02,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:52:02,408 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:52:02,408 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:52:02,408 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:52:02,408 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:52:02,412 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:52:02,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:52:02,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:52:02,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:52:02,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:52:02,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:52:02,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:52:02,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:52:02,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:52:02,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:52:02,414 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:52:02,414 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:52:02,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:52:02,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:52:02,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:52:02,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:52:02,415 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:52:02,415 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d41b1dc1d5d7eec1f1fd4e3cbbef0194aa2dded6486a15b383e9bb8fe1468a3 [2024-10-14 19:52:02,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:52:02,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:52:02,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:52:02,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:52:02,741 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:52:02,742 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-10-14 19:52:04,158 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:52:04,324 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:52:04,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-parallel-sum-equiv.wvr.c [2024-10-14 19:52:04,334 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/942c145ad/62749ec0a0874314b3048c2e36f8fa89/FLAG0e4b4477d [2024-10-14 19:52:04,348 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/942c145ad/62749ec0a0874314b3048c2e36f8fa89 [2024-10-14 19:52:04,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:52:04,352 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:52:04,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:52:04,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:52:04,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:52:04,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,366 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae5662a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04, skipping insertion in model container [2024-10-14 19:52:04,366 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,393 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:52:04,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:52:04,598 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:52:04,604 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:52:04,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:52:04,633 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:52:04,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:52:04,677 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:52:04,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04 WrapperNode [2024-10-14 19:52:04,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:52:04,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:52:04,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:52:04,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:52:04,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,725 INFO L138 Inliner]: procedures = 28, calls = 54, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 241 [2024-10-14 19:52:04,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:52:04,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:52:04,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:52:04,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:52:04,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,741 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,763 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-14 19:52:04,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,767 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,784 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:52:04,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:52:04,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:52:04,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:52:04,798 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (1/1) ... [2024-10-14 19:52:04,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:52:04,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:52:04,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:52:04,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:52:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:52:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:52:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:52:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:52:04,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:52:04,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:52:04,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:52:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:52:04,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:52:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:52:04,890 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:52:04,890 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 19:52:04,891 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 19:52:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:52:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:52:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:52:04,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:52:04,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:52:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:52:04,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:52:04,893 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:52:05,006 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:52:05,008 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:52:05,450 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:52:05,450 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:52:05,755 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:52:05,756 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 19:52:05,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:52:05 BoogieIcfgContainer [2024-10-14 19:52:05,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:52:05,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:52:05,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:52:05,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:52:05,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:52:04" (1/3) ... [2024-10-14 19:52:05,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1891fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:52:05, skipping insertion in model container [2024-10-14 19:52:05,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:52:04" (2/3) ... [2024-10-14 19:52:05,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f1891fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:52:05, skipping insertion in model container [2024-10-14 19:52:05,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:52:05" (3/3) ... [2024-10-14 19:52:05,767 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-10-14 19:52:05,781 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:52:05,782 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-14 19:52:05,782 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:52:05,855 INFO L143 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-10-14 19:52:05,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 70 transitions, 180 flow [2024-10-14 19:52:05,917 INFO L124 PetriNetUnfolderBase]: 9/63 cut-off events. [2024-10-14 19:52:05,917 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-14 19:52:05,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 63 events. 9/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 134 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2024-10-14 19:52:05,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 70 transitions, 180 flow [2024-10-14 19:52:05,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 62 transitions, 154 flow [2024-10-14 19:52:05,937 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:52:05,943 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;@91b4094, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:52:05,943 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-14 19:52:05,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:52:05,950 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:52:05,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:52:05,950 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:05,950 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:52:05,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:05,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash 769008, now seen corresponding path program 1 times [2024-10-14 19:52:05,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:05,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954289208] [2024-10-14 19:52:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:05,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:05,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:05,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:05,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:52:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:06,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:52:06,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:06,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:52:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:06,101 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:06,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:06,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954289208] [2024-10-14 19:52:06,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954289208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:06,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:06,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:52:06,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568121000] [2024-10-14 19:52:06,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:06,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:52:06,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:06,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:52:06,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:52:06,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-10-14 19:52:06,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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) [2024-10-14 19:52:06,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:06,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-10-14 19:52:06,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:07,954 INFO L124 PetriNetUnfolderBase]: 14986/20198 cut-off events. [2024-10-14 19:52:07,954 INFO L125 PetriNetUnfolderBase]: For 1062/1062 co-relation queries the response was YES. [2024-10-14 19:52:07,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41822 conditions, 20198 events. 14986/20198 cut-off events. For 1062/1062 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 103970 event pairs, 13324 based on Foata normal form. 1/15683 useless extension candidates. Maximal degree in co-relation 41747. Up to 20169 conditions per place. [2024-10-14 19:52:08,084 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 49 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-14 19:52:08,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 244 flow [2024-10-14 19:52:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:52:08,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:52:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-14 19:52:08,094 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39814814814814814 [2024-10-14 19:52:08,096 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 154 flow. Second operand 3 states and 86 transitions. [2024-10-14 19:52:08,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 244 flow [2024-10-14 19:52:08,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-14 19:52:08,110 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 126 flow [2024-10-14 19:52:08,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-10-14 19:52:08,114 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-10-14 19:52:08,115 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 126 flow [2024-10-14 19:52:08,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 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) [2024-10-14 19:52:08,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:08,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:52:08,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:52:08,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:08,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:08,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:08,320 INFO L85 PathProgramCache]: Analyzing trace with hash 769009, now seen corresponding path program 1 times [2024-10-14 19:52:08,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:08,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41954657] [2024-10-14 19:52:08,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:08,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:08,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:08,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:08,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 19:52:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:08,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:52:08,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:08,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:52:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:08,553 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:08,553 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:08,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41954657] [2024-10-14 19:52:08,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41954657] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:08,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:52:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040038799] [2024-10-14 19:52:08,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:08,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:52:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:08,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:52:08,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:52:08,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-10-14 19:52:08,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:08,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:08,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-10-14 19:52:08,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:09,942 INFO L124 PetriNetUnfolderBase]: 14987/20201 cut-off events. [2024-10-14 19:52:09,942 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-10-14 19:52:09,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40858 conditions, 20201 events. 14987/20201 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 104042 event pairs, 13324 based on Foata normal form. 0/15685 useless extension candidates. Maximal degree in co-relation 40836. Up to 20174 conditions per place. [2024-10-14 19:52:10,036 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 51 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-10-14 19:52:10,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 244 flow [2024-10-14 19:52:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:52:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:52:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-10-14 19:52:10,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-10-14 19:52:10,039 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 126 flow. Second operand 4 states and 96 transitions. [2024-10-14 19:52:10,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 244 flow [2024-10-14 19:52:10,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 59 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:52:10,041 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 149 flow [2024-10-14 19:52:10,041 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-10-14 19:52:10,043 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-10-14 19:52:10,043 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 149 flow [2024-10-14 19:52:10,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:10,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:10,044 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:52:10,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-14 19:52:10,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:10,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:10,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:10,245 INFO L85 PathProgramCache]: Analyzing trace with hash 739041883, now seen corresponding path program 1 times [2024-10-14 19:52:10,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:10,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586620243] [2024-10-14 19:52:10,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:10,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:10,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:10,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:10,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:52:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:10,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 19:52:10,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:10,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:52:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:10,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:10,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:10,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586620243] [2024-10-14 19:52:10,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586620243] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:10,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:52:10,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:52:10,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399940390] [2024-10-14 19:52:10,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:10,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:52:10,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:10,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:52:10,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:52:10,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-10-14 19:52:10,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 149 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:10,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:10,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-10-14 19:52:10,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:12,776 INFO L124 PetriNetUnfolderBase]: 14990/20210 cut-off events. [2024-10-14 19:52:12,776 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-10-14 19:52:12,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40895 conditions, 20210 events. 14990/20210 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 104085 event pairs, 13324 based on Foata normal form. 0/15690 useless extension candidates. Maximal degree in co-relation 40843. Up to 20177 conditions per place. [2024-10-14 19:52:12,850 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 51 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2024-10-14 19:52:12,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 313 flow [2024-10-14 19:52:12,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 19:52:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-14 19:52:12,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-10-14 19:52:12,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23194444444444445 [2024-10-14 19:52:12,853 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 149 flow. Second operand 10 states and 167 transitions. [2024-10-14 19:52:12,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 313 flow [2024-10-14 19:52:12,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:52:12,855 INFO L231 Difference]: Finished difference. Result has 71 places, 68 transitions, 226 flow [2024-10-14 19:52:12,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=226, PETRI_PLACES=71, PETRI_TRANSITIONS=68} [2024-10-14 19:52:12,855 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-10-14 19:52:12,855 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 68 transitions, 226 flow [2024-10-14 19:52:12,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:12,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:12,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:12,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-14 19:52:13,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:13,057 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread4Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:13,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:13,058 INFO L85 PathProgramCache]: Analyzing trace with hash -446520158, now seen corresponding path program 1 times [2024-10-14 19:52:13,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:13,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080782882] [2024-10-14 19:52:13,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:13,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:13,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:13,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:13,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 19:52:13,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:13,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:52:13,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:13,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:52:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:13,131 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:13,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080782882] [2024-10-14 19:52:13,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080782882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:13,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:13,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:52:13,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184738790] [2024-10-14 19:52:13,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:13,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:52:13,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:13,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:52:13,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:52:13,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-10-14 19:52:13,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:13,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:13,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-10-14 19:52:13,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:14,115 INFO L124 PetriNetUnfolderBase]: 11190/15117 cut-off events. [2024-10-14 19:52:14,115 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-14 19:52:14,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30648 conditions, 15117 events. 11190/15117 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 74519 event pairs, 9814 based on Foata normal form. 0/12558 useless extension candidates. Maximal degree in co-relation 30614. Up to 15079 conditions per place. [2024-10-14 19:52:14,195 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 54 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2024-10-14 19:52:14,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 65 transitions, 340 flow [2024-10-14 19:52:14,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:52:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:52:14,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-10-14 19:52:14,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3159722222222222 [2024-10-14 19:52:14,197 INFO L175 Difference]: Start difference. First operand has 71 places, 68 transitions, 226 flow. Second operand 4 states and 91 transitions. [2024-10-14 19:52:14,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 65 transitions, 340 flow [2024-10-14 19:52:14,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 310 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-14 19:52:14,199 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 202 flow [2024-10-14 19:52:14,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-10-14 19:52:14,200 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-10-14 19:52:14,200 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 202 flow [2024-10-14 19:52:14,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:14,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:14,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:14,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-10-14 19:52:14,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:14,402 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:14,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash -446520157, now seen corresponding path program 1 times [2024-10-14 19:52:14,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:14,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201029660] [2024-10-14 19:52:14,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:14,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:14,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:14,406 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:14,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:52:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:14,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:52:14,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:14,481 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 10 treesize of output 9 [2024-10-14 19:52:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:14,636 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:14,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201029660] [2024-10-14 19:52:14,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201029660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:14,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:14,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:52:14,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956998478] [2024-10-14 19:52:14,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:14,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:52:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:14,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:52:14,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:52:14,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-10-14 19:52:14,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:14,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:14,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-10-14 19:52:14,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:16,215 INFO L124 PetriNetUnfolderBase]: 18086/24362 cut-off events. [2024-10-14 19:52:16,216 INFO L125 PetriNetUnfolderBase]: For 296/296 co-relation queries the response was YES. [2024-10-14 19:52:16,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49252 conditions, 24362 events. 18086/24362 cut-off events. For 296/296 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 127771 event pairs, 9864 based on Foata normal form. 0/20363 useless extension candidates. Maximal degree in co-relation 49221. Up to 15109 conditions per place. [2024-10-14 19:52:16,385 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 90 selfloop transitions, 8 changer transitions 0/103 dead transitions. [2024-10-14 19:52:16,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 482 flow [2024-10-14 19:52:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:52:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:52:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-10-14 19:52:16,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-10-14 19:52:16,388 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 202 flow. Second operand 5 states and 142 transitions. [2024-10-14 19:52:16,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 482 flow [2024-10-14 19:52:16,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 103 transitions, 475 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:52:16,390 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 219 flow [2024-10-14 19:52:16,391 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-10-14 19:52:16,391 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-10-14 19:52:16,392 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 219 flow [2024-10-14 19:52:16,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:16,392 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:16,392 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:52:16,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-14 19:52:16,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:16,593 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:16,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:16,594 INFO L85 PathProgramCache]: Analyzing trace with hash 949167769, now seen corresponding path program 2 times [2024-10-14 19:52:16,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:16,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844272648] [2024-10-14 19:52:16,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:52:16,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:16,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:16,596 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:16,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:52:16,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:52:16,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:52:16,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:52:16,721 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:16,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:52:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:17,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:17,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844272648] [2024-10-14 19:52:17,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844272648] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:17,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:52:17,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:52:17,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719000858] [2024-10-14 19:52:17,687 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:17,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:52:17,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:52:17,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:52:17,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-10-14 19:52:17,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 219 flow. Second operand has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:17,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:17,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-10-14 19:52:17,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:21,310 INFO L124 PetriNetUnfolderBase]: 18072/24360 cut-off events. [2024-10-14 19:52:21,310 INFO L125 PetriNetUnfolderBase]: For 2091/2091 co-relation queries the response was YES. [2024-10-14 19:52:21,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51236 conditions, 24360 events. 18072/24360 cut-off events. For 2091/2091 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 125548 event pairs, 16102 based on Foata normal form. 6/20361 useless extension candidates. Maximal degree in co-relation 51130. Up to 24314 conditions per place. [2024-10-14 19:52:21,492 INFO L140 encePairwiseOnDemand]: 67/72 looper letters, 49 selfloop transitions, 31 changer transitions 0/84 dead transitions. [2024-10-14 19:52:21,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 84 transitions, 481 flow [2024-10-14 19:52:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 19:52:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-14 19:52:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 305 transitions. [2024-10-14 19:52:21,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.19255050505050506 [2024-10-14 19:52:21,495 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 219 flow. Second operand 22 states and 305 transitions. [2024-10-14 19:52:21,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 84 transitions, 481 flow [2024-10-14 19:52:21,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 84 transitions, 455 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:52:21,499 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 387 flow [2024-10-14 19:52:21,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=387, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-10-14 19:52:21,500 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 29 predicate places. [2024-10-14 19:52:21,500 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 387 flow [2024-10-14 19:52:21,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:21,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:21,500 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:21,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-14 19:52:21,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:21,701 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:21,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1599724708, now seen corresponding path program 1 times [2024-10-14 19:52:21,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:21,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1861525805] [2024-10-14 19:52:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:21,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:21,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:21,704 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:21,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-14 19:52:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:21,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:52:21,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:21,772 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 10 treesize of output 9 [2024-10-14 19:52:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:22,035 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:22,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:22,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1861525805] [2024-10-14 19:52:22,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1861525805] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:22,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:22,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:52:22,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769777763] [2024-10-14 19:52:22,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:22,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:52:22,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:22,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:52:22,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:52:22,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-10-14 19:52:22,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 387 flow. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:22,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:22,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-10-14 19:52:22,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:24,805 INFO L124 PetriNetUnfolderBase]: 26399/35646 cut-off events. [2024-10-14 19:52:24,805 INFO L125 PetriNetUnfolderBase]: For 2017/2017 co-relation queries the response was YES. [2024-10-14 19:52:25,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74319 conditions, 35646 events. 26399/35646 cut-off events. For 2017/2017 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 195223 event pairs, 12136 based on Foata normal form. 0/29944 useless extension candidates. Maximal degree in co-relation 74269. Up to 24609 conditions per place. [2024-10-14 19:52:25,173 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 100 selfloop transitions, 15 changer transitions 0/120 dead transitions. [2024-10-14 19:52:25,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 120 transitions, 705 flow [2024-10-14 19:52:25,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:52:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:52:25,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-10-14 19:52:25,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-10-14 19:52:25,175 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 387 flow. Second operand 5 states and 140 transitions. [2024-10-14 19:52:25,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 120 transitions, 705 flow [2024-10-14 19:52:25,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 120 transitions, 625 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-14 19:52:25,182 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 352 flow [2024-10-14 19:52:25,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2024-10-14 19:52:25,183 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 25 predicate places. [2024-10-14 19:52:25,183 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 352 flow [2024-10-14 19:52:25,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:25,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:25,184 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:25,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-14 19:52:25,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:25,386 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:25,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1979359743, now seen corresponding path program 1 times [2024-10-14 19:52:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:25,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582371836] [2024-10-14 19:52:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:25,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:25,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:25,392 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:25,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-14 19:52:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:25,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-14 19:52:25,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:25,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:52:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:25,638 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:52:25,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:25,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582371836] [2024-10-14 19:52:25,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582371836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:52:25,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:52:25,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:52:25,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084966477] [2024-10-14 19:52:25,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:52:25,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:52:25,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:25,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:52:25,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:52:25,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 72 [2024-10-14 19:52:25,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:25,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:25,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 72 [2024-10-14 19:52:25,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:27,688 INFO L124 PetriNetUnfolderBase]: 30117/40834 cut-off events. [2024-10-14 19:52:27,688 INFO L125 PetriNetUnfolderBase]: For 3680/3680 co-relation queries the response was YES. [2024-10-14 19:52:27,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89418 conditions, 40834 events. 30117/40834 cut-off events. For 3680/3680 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 224932 event pairs, 23785 based on Foata normal form. 625/35102 useless extension candidates. Maximal degree in co-relation 89372. Up to 35514 conditions per place. [2024-10-14 19:52:28,078 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 131 selfloop transitions, 4 changer transitions 5/145 dead transitions. [2024-10-14 19:52:28,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 145 transitions, 775 flow [2024-10-14 19:52:28,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:52:28,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:52:28,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-10-14 19:52:28,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-10-14 19:52:28,079 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 352 flow. Second operand 5 states and 170 transitions. [2024-10-14 19:52:28,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 145 transitions, 775 flow [2024-10-14 19:52:28,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 145 transitions, 746 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:52:28,086 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 352 flow [2024-10-14 19:52:28,086 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=352, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2024-10-14 19:52:28,086 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2024-10-14 19:52:28,086 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 352 flow [2024-10-14 19:52:28,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:28,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:28,087 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:28,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-14 19:52:28,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:28,289 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:28,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:28,291 INFO L85 PathProgramCache]: Analyzing trace with hash -42715819, now seen corresponding path program 1 times [2024-10-14 19:52:28,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:28,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529509119] [2024-10-14 19:52:28,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:28,291 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:28,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:28,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:28,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-14 19:52:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:28,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 19:52:28,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:28,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:52:28,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:28,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:28,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529509119] [2024-10-14 19:52:28,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529509119] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:28,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:52:28,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-14 19:52:28,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138930859] [2024-10-14 19:52:28,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:28,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:52:28,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:28,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:52:28,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:52:29,018 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-10-14 19:52:29,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 352 flow. Second operand has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 11 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:29,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:29,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-10-14 19:52:29,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:32,804 INFO L124 PetriNetUnfolderBase]: 42600/57881 cut-off events. [2024-10-14 19:52:32,804 INFO L125 PetriNetUnfolderBase]: For 14988/14988 co-relation queries the response was YES. [2024-10-14 19:52:33,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130095 conditions, 57881 events. 42600/57881 cut-off events. For 14988/14988 co-relation queries the response was YES. Maximal size of possible extension queue 1377. Compared 339736 event pairs, 25927 based on Foata normal form. 568/49559 useless extension candidates. Maximal degree in co-relation 130047. Up to 35502 conditions per place. [2024-10-14 19:52:33,342 INFO L140 encePairwiseOnDemand]: 66/72 looper letters, 133 selfloop transitions, 25 changer transitions 0/162 dead transitions. [2024-10-14 19:52:33,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 162 transitions, 883 flow [2024-10-14 19:52:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:52:33,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:52:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-10-14 19:52:33,344 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39087301587301587 [2024-10-14 19:52:33,344 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 352 flow. Second operand 7 states and 197 transitions. [2024-10-14 19:52:33,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 162 transitions, 883 flow [2024-10-14 19:52:33,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 162 transitions, 878 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:52:33,358 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 413 flow [2024-10-14 19:52:33,358 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=413, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-10-14 19:52:33,359 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 34 predicate places. [2024-10-14 19:52:33,359 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 413 flow [2024-10-14 19:52:33,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 11 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:33,359 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:33,359 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:33,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-14 19:52:33,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:33,563 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:33,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:33,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1722680534, now seen corresponding path program 1 times [2024-10-14 19:52:33,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:33,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113525332] [2024-10-14 19:52:33,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:52:33,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:33,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:33,567 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:33,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-14 19:52:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:52:33,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 19:52:33,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:33,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-14 19:52:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:33,819 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:34,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:34,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113525332] [2024-10-14 19:52:34,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113525332] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:34,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:52:34,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-14 19:52:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485373619] [2024-10-14 19:52:34,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:34,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-14 19:52:34,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-14 19:52:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-14 19:52:34,375 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-10-14 19:52:34,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 413 flow. Second operand has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 11 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:34,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:34,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-10-14 19:52:34,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:38,525 INFO L124 PetriNetUnfolderBase]: 33835/46184 cut-off events. [2024-10-14 19:52:38,525 INFO L125 PetriNetUnfolderBase]: For 18616/18616 co-relation queries the response was YES. [2024-10-14 19:52:38,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104954 conditions, 46184 events. 33835/46184 cut-off events. For 18616/18616 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 259994 event pairs, 26354 based on Foata normal form. 432/39466 useless extension candidates. Maximal degree in co-relation 104900. Up to 35502 conditions per place. [2024-10-14 19:52:38,887 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 100 selfloop transitions, 24 changer transitions 4/132 dead transitions. [2024-10-14 19:52:38,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 788 flow [2024-10-14 19:52:38,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 19:52:38,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-14 19:52:38,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-10-14 19:52:38,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3392857142857143 [2024-10-14 19:52:38,890 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 413 flow. Second operand 7 states and 171 transitions. [2024-10-14 19:52:38,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 788 flow [2024-10-14 19:52:38,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 132 transitions, 782 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:52:38,900 INFO L231 Difference]: Finished difference. Result has 106 places, 89 transitions, 469 flow [2024-10-14 19:52:38,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=106, PETRI_TRANSITIONS=89} [2024-10-14 19:52:38,902 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 40 predicate places. [2024-10-14 19:52:38,902 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 89 transitions, 469 flow [2024-10-14 19:52:38,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.909090909090908) internal successors, (142), 11 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:38,902 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:38,902 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:38,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-14 19:52:39,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:39,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:39,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1932113109, now seen corresponding path program 2 times [2024-10-14 19:52:39,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:39,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077777351] [2024-10-14 19:52:39,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:52:39,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:39,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:39,109 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:39,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-14 19:52:39,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:52:39,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:52:39,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:52:39,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:39,184 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 10 treesize of output 9 [2024-10-14 19:52:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:39,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:40,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:40,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077777351] [2024-10-14 19:52:40,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077777351] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:40,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:52:40,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:52:40,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060565476] [2024-10-14 19:52:40,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:40,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:52:40,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:40,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:52:40,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:52:40,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-10-14 19:52:40,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 89 transitions, 469 flow. Second operand has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 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) [2024-10-14 19:52:40,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:40,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-10-14 19:52:40,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:52:48,494 INFO L124 PetriNetUnfolderBase]: 59976/80763 cut-off events. [2024-10-14 19:52:48,495 INFO L125 PetriNetUnfolderBase]: For 29708/29708 co-relation queries the response was YES. [2024-10-14 19:52:49,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182972 conditions, 80763 events. 59976/80763 cut-off events. For 29708/29708 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 457729 event pairs, 12494 based on Foata normal form. 568/68861 useless extension candidates. Maximal degree in co-relation 182911. Up to 17603 conditions per place. [2024-10-14 19:52:49,426 INFO L140 encePairwiseOnDemand]: 65/72 looper letters, 318 selfloop transitions, 25 changer transitions 7/354 dead transitions. [2024-10-14 19:52:49,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 354 transitions, 1917 flow [2024-10-14 19:52:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-14 19:52:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-14 19:52:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 457 transitions. [2024-10-14 19:52:49,430 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45337301587301587 [2024-10-14 19:52:49,430 INFO L175 Difference]: Start difference. First operand has 106 places, 89 transitions, 469 flow. Second operand 14 states and 457 transitions. [2024-10-14 19:52:49,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 354 transitions, 1917 flow [2024-10-14 19:52:49,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 354 transitions, 1873 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:52:49,446 INFO L231 Difference]: Finished difference. Result has 118 places, 96 transitions, 515 flow [2024-10-14 19:52:49,446 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=72, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=515, PETRI_PLACES=118, PETRI_TRANSITIONS=96} [2024-10-14 19:52:49,448 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 52 predicate places. [2024-10-14 19:52:49,448 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 96 transitions, 515 flow [2024-10-14 19:52:49,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.428571428571429) internal successors, (174), 14 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) [2024-10-14 19:52:49,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:52:49,448 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:52:49,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-14 19:52:49,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:49,654 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-10-14 19:52:49,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:52:49,654 INFO L85 PathProgramCache]: Analyzing trace with hash -164454380, now seen corresponding path program 2 times [2024-10-14 19:52:49,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:52:49,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686307971] [2024-10-14 19:52:49,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:52:49,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:52:49,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:52:49,657 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:52:49,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-14 19:52:49,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:52:49,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:52:49,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 19:52:49,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:52:49,753 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 10 treesize of output 9 [2024-10-14 19:52:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:50,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:52:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:52:50,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:52:50,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686307971] [2024-10-14 19:52:50,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686307971] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:52:50,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:52:50,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:52:50,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639433322] [2024-10-14 19:52:50,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:52:50,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:52:50,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:52:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:52:50,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:52:50,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 72 [2024-10-14 19:52:50,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 96 transitions, 515 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:52:50,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:52:50,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 72 [2024-10-14 19:52:50,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand