./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:21:53,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:21:53,663 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:21:53,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:21:53,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:21:53,705 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:21:53,706 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:21:53,706 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:21:53,707 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:21:53,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:21:53,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:21:53,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:21:53,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:21:53,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:21:53,712 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:21:53,713 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:21:53,713 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:21:53,713 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:21:53,713 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:21:53,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:21:53,714 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:21:53,719 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:21:53,719 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:21:53,720 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:21:53,720 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:21:53,720 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:21:53,721 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:21:53,721 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:21:53,721 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:21:53,722 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:21:53,722 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:21:53,722 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:21:53,722 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:21:53,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:21:53,723 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:21:53,724 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:21:53,724 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:21:53,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:21:53,724 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:21:53,724 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:21:53,725 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:21:53,726 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:21:53,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-10-24 19:21:53,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:21:54,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:21:54,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:21:54,016 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:21:54,017 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:21:54,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-10-24 19:21:55,521 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:21:55,705 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:21:55,705 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-10-24 19:21:55,717 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9945af41/a4144d24b56d4f18a932665ce0b60b0f/FLAG229904225 [2024-10-24 19:21:55,731 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9945af41/a4144d24b56d4f18a932665ce0b60b0f [2024-10-24 19:21:55,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:21:55,734 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:21:55,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:21:55,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:21:55,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:21:55,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:21:55" (1/1) ... [2024-10-24 19:21:55,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d5ac41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:55, skipping insertion in model container [2024-10-24 19:21:55,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:21:55" (1/1) ... [2024-10-24 19:21:55,770 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:21:55,998 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:21:56,006 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) [2024-10-24 19:21:56,007 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13657ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:56, skipping insertion in model container [2024-10-24 19:21:56,007 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:21:56,007 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:21:56,009 INFO L158 Benchmark]: Toolchain (without parser) took 273.64ms. Allocated memory is still 178.3MB. Free memory was 120.4MB in the beginning and 108.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:21:56,009 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 178.3MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:21:56,010 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.75ms. Allocated memory is still 178.3MB. Free memory was 120.4MB in the beginning and 108.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-24 19:21:56,011 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 178.3MB. Free memory is still 145.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.75ms. Allocated memory is still 178.3MB. Free memory was 120.4MB in the beginning and 108.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 104]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.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 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:21:58,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:21:58,182 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:21:58,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:21:58,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:21:58,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:21:58,227 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:21:58,228 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:21:58,229 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:21:58,229 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:21:58,230 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:21:58,230 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:21:58,231 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:21:58,231 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:21:58,233 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:21:58,233 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:21:58,233 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:21:58,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:21:58,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:21:58,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:21:58,238 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:21:58,238 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:21:58,239 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:21:58,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:21:58,239 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:21:58,239 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:21:58,239 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:21:58,240 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:21:58,240 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:21:58,240 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:21:58,240 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:21:58,240 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:21:58,241 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:21:58,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:21:58,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:21:58,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:21:58,241 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:21:58,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:21:58,242 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:21:58,243 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:21:58,244 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:21:58,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:21:58,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:21:58,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:21:58,245 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:21:58,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d936eafcc314e66bb4cd572754c58bf1f2fc59d35c83764f43dae769bce220a [2024-10-24 19:21:58,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:21:58,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:21:58,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:21:58,607 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:21:58,608 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:21:58,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-10-24 19:22:00,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:22:00,458 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:22:00,458 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt2.wvr.c [2024-10-24 19:22:00,466 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcf27a068/2c4bd49eff824c1c9c484f44c3c5a047/FLAG43798e9c6 [2024-10-24 19:22:00,478 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcf27a068/2c4bd49eff824c1c9c484f44c3c5a047 [2024-10-24 19:22:00,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:22:00,482 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:22:00,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:22:00,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:22:00,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:22:00,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:00,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ac6e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00, skipping insertion in model container [2024-10-24 19:22:00,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:00,517 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:22:00,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:22:00,817 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:22:00,822 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:22:00,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:22:00,858 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:22:00,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:22:00,915 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:22:00,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00 WrapperNode [2024-10-24 19:22:00,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:22:00,917 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:22:00,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:22:00,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:22:00,924 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:00,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:00,979 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 178 [2024-10-24 19:22:00,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:22:00,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:22:00,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:22:00,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:22:00,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:00,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:00,998 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:01,024 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]. [2024-10-24 19:22:01,026 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:01,026 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:01,038 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:01,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:01,046 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:01,047 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:01,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:22:01,051 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:22:01,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:22:01,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:22:01,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (1/1) ... [2024-10-24 19:22:01,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:22:01,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:22:01,089 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) [2024-10-24 19:22:01,095 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 [2024-10-24 19:22:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:22:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:22:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:22:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:22:01,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:22:01,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:22:01,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:22:01,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:22:01,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:22:01,151 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 19:22:01,151 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 19:22:01,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 19:22:01,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 19:22:01,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:22:01,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:22:01,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:22:01,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:22:01,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:22:01,153 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:22:01,297 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:22:01,300 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:22:01,820 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:22:01,820 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:22:02,174 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:22:02,174 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-24 19:22:02,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:22:02 BoogieIcfgContainer [2024-10-24 19:22:02,174 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:22:02,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:22:02,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:22:02,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:22:02,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:22:00" (1/3) ... [2024-10-24 19:22:02,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@958b4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:22:02, skipping insertion in model container [2024-10-24 19:22:02,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:00" (2/3) ... [2024-10-24 19:22:02,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@958b4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:22:02, skipping insertion in model container [2024-10-24 19:22:02,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:22:02" (3/3) ... [2024-10-24 19:22:02,186 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2024-10-24 19:22:02,204 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:22:02,204 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-24 19:22:02,204 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:22:02,267 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 19:22:02,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 44 transitions, 109 flow [2024-10-24 19:22:02,348 INFO L124 PetriNetUnfolderBase]: 4/41 cut-off events. [2024-10-24 19:22:02,349 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 19:22:02,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 4/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-10-24 19:22:02,354 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 44 transitions, 109 flow [2024-10-24 19:22:02,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 40 transitions, 98 flow [2024-10-24 19:22:02,366 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:22:02,374 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;@bccdc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:22:02,375 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-10-24 19:22:02,379 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:22:02,380 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:22:02,381 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:22:02,381 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:02,381 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:22:02,383 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:02,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:02,388 INFO L85 PathProgramCache]: Analyzing trace with hash 596647, now seen corresponding path program 1 times [2024-10-24 19:22:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:02,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755014451] [2024-10-24 19:22:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:02,398 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 [2024-10-24 19:22:02,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:02,400 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) [2024-10-24 19:22:02,402 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 [2024-10-24 19:22:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:02,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:22:02,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:02,557 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 [2024-10-24 19:22:02,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:02,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:22:02,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:02,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755014451] [2024-10-24 19:22:02,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755014451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:22:02,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:22:02,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:22:02,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657461239] [2024-10-24 19:22:02,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:22:02,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:22:02,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:22:02,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:22:02,632 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:02,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:02,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:02,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:02,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:03,114 INFO L124 PetriNetUnfolderBase]: 1316/1925 cut-off events. [2024-10-24 19:22:03,114 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-24 19:22:03,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3938 conditions, 1925 events. 1316/1925 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9745 event pairs, 1060 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 3632. Up to 1877 conditions per place. [2024-10-24 19:22:03,134 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 30 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2024-10-24 19:22:03,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 156 flow [2024-10-24 19:22:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:22:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:22:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-24 19:22:03,147 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-10-24 19:22:03,149 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 98 flow. Second operand 3 states and 61 transitions. [2024-10-24 19:22:03,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 156 flow [2024-10-24 19:22:03,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 144 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 19:22:03,162 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 84 flow [2024-10-24 19:22:03,165 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-10-24 19:22:03,171 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -7 predicate places. [2024-10-24 19:22:03,172 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 84 flow [2024-10-24 19:22:03,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:03,172 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:03,172 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:22:03,176 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 (2)] Ended with exit code 0 [2024-10-24 19:22:03,373 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 [2024-10-24 19:22:03,373 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:03,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:03,374 INFO L85 PathProgramCache]: Analyzing trace with hash 596648, now seen corresponding path program 1 times [2024-10-24 19:22:03,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:03,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170138266] [2024-10-24 19:22:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:03,375 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 [2024-10-24 19:22:03,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:03,378 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) [2024-10-24 19:22:03,380 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 [2024-10-24 19:22:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:03,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:22:03,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:03,466 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 [2024-10-24 19:22:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:03,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:22:03,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:03,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170138266] [2024-10-24 19:22:03,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170138266] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:22:03,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:22:03,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:22:03,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398250126] [2024-10-24 19:22:03,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:22:03,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:22:03,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:22:03,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:22:03,615 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:03,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:03,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:03,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:03,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:04,095 INFO L124 PetriNetUnfolderBase]: 1317/1928 cut-off events. [2024-10-24 19:22:04,096 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 19:22:04,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3860 conditions, 1928 events. 1317/1928 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9772 event pairs, 1060 based on Foata normal form. 0/1374 useless extension candidates. Maximal degree in co-relation 3838. Up to 1882 conditions per place. [2024-10-24 19:22:04,108 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 32 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2024-10-24 19:22:04,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 164 flow [2024-10-24 19:22:04,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:22:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:22:04,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-10-24 19:22:04,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-10-24 19:22:04,110 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 84 flow. Second operand 4 states and 73 transitions. [2024-10-24 19:22:04,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 164 flow [2024-10-24 19:22:04,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:22:04,112 INFO L231 Difference]: Finished difference. Result has 42 places, 40 transitions, 107 flow [2024-10-24 19:22:04,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=42, PETRI_TRANSITIONS=40} [2024-10-24 19:22:04,113 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -4 predicate places. [2024-10-24 19:22:04,114 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 40 transitions, 107 flow [2024-10-24 19:22:04,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:04,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:04,114 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:22:04,118 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 (3)] Forceful destruction successful, exit code 0 [2024-10-24 19:22:04,316 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 [2024-10-24 19:22:04,317 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:04,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:04,318 INFO L85 PathProgramCache]: Analyzing trace with hash 573396854, now seen corresponding path program 1 times [2024-10-24 19:22:04,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:04,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334263828] [2024-10-24 19:22:04,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:04,319 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 [2024-10-24 19:22:04,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:04,322 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) [2024-10-24 19:22:04,323 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 [2024-10-24 19:22:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:04,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:22:04,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:04,404 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 [2024-10-24 19:22:04,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:04,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:22:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:04,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:04,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334263828] [2024-10-24 19:22:04,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334263828] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:22:04,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:22:04,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:22:04,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994047076] [2024-10-24 19:22:04,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:22:04,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:22:04,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:22:04,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:22:05,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:05,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 107 flow. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:05,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:05,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:05,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:05,693 INFO L124 PetriNetUnfolderBase]: 1320/1937 cut-off events. [2024-10-24 19:22:05,694 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 19:22:05,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3897 conditions, 1937 events. 1320/1937 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 9851 event pairs, 1060 based on Foata normal form. 0/1379 useless extension candidates. Maximal degree in co-relation 3845. Up to 1885 conditions per place. [2024-10-24 19:22:05,706 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 32 selfloop transitions, 13 changer transitions 0/49 dead transitions. [2024-10-24 19:22:05,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 233 flow [2024-10-24 19:22:05,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:22:05,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:22:05,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-10-24 19:22:05,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31363636363636366 [2024-10-24 19:22:05,711 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 107 flow. Second operand 10 states and 138 transitions. [2024-10-24 19:22:05,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 233 flow [2024-10-24 19:22:05,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:22:05,712 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 184 flow [2024-10-24 19:22:05,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-10-24 19:22:05,716 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-10-24 19:22:05,716 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 184 flow [2024-10-24 19:22:05,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:05,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:05,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:22:05,722 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 [2024-10-24 19:22:05,918 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 [2024-10-24 19:22:05,918 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:05,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:05,919 INFO L85 PathProgramCache]: Analyzing trace with hash 597915046, now seen corresponding path program 1 times [2024-10-24 19:22:05,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111228556] [2024-10-24 19:22:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:05,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:22:05,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:05,921 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) [2024-10-24 19:22:05,922 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 [2024-10-24 19:22:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:05,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:22:05,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:05,992 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 [2024-10-24 19:22:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:06,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:22:06,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:06,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111228556] [2024-10-24 19:22:06,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111228556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:22:06,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:22:06,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:22:06,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422068508] [2024-10-24 19:22:06,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:22:06,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:22:06,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:06,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:22:06,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:22:06,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:06,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-10-24 19:22:06,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:06,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:06,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:06,252 INFO L124 PetriNetUnfolderBase]: 796/1183 cut-off events. [2024-10-24 19:22:06,253 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-24 19:22:06,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 1183 events. 796/1183 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5343 event pairs, 608 based on Foata normal form. 0/968 useless extension candidates. Maximal degree in co-relation 2377. Up to 1138 conditions per place. [2024-10-24 19:22:06,261 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 35 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2024-10-24 19:22:06,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 260 flow [2024-10-24 19:22:06,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:22:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:22:06,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-24 19:22:06,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-10-24 19:22:06,263 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 184 flow. Second operand 4 states and 68 transitions. [2024-10-24 19:22:06,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 260 flow [2024-10-24 19:22:06,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 230 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-24 19:22:06,265 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 160 flow [2024-10-24 19:22:06,266 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-10-24 19:22:06,266 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2024-10-24 19:22:06,267 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 160 flow [2024-10-24 19:22:06,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2024-10-24 19:22:06,267 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:06,267 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:22:06,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-24 19:22:06,468 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 [2024-10-24 19:22:06,468 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:06,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:06,469 INFO L85 PathProgramCache]: Analyzing trace with hash 597915047, now seen corresponding path program 1 times [2024-10-24 19:22:06,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:06,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954899307] [2024-10-24 19:22:06,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:06,469 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 [2024-10-24 19:22:06,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:06,471 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) [2024-10-24 19:22:06,472 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 [2024-10-24 19:22:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:06,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:22:06,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:06,540 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 [2024-10-24 19:22:06,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:06,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:22:06,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:06,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954899307] [2024-10-24 19:22:06,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954899307] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:22:06,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:22:06,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:22:06,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740585966] [2024-10-24 19:22:06,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:22:06,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:22:06,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:06,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:22:06,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:22:06,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:06,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:06,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:06,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:06,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:07,322 INFO L124 PetriNetUnfolderBase]: 1582/2271 cut-off events. [2024-10-24 19:22:07,323 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-24 19:22:07,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4608 conditions, 2271 events. 1582/2271 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 10873 event pairs, 614 based on Foata normal form. 0/1831 useless extension candidates. Maximal degree in co-relation 4577. Up to 1409 conditions per place. [2024-10-24 19:22:07,338 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 65 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2024-10-24 19:22:07,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 388 flow [2024-10-24 19:22:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:22:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:22:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-10-24 19:22:07,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-10-24 19:22:07,340 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 160 flow. Second operand 6 states and 121 transitions. [2024-10-24 19:22:07,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 388 flow [2024-10-24 19:22:07,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:22:07,345 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 210 flow [2024-10-24 19:22:07,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-10-24 19:22:07,346 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-10-24 19:22:07,348 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 210 flow [2024-10-24 19:22:07,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:07,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:07,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:22:07,354 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 [2024-10-24 19:22:07,551 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 [2024-10-24 19:22:07,552 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:07,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash -930457386, now seen corresponding path program 1 times [2024-10-24 19:22:07,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:07,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811138999] [2024-10-24 19:22:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:07,553 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 [2024-10-24 19:22:07,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:07,554 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) [2024-10-24 19:22:07,555 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 [2024-10-24 19:22:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:07,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 19:22:07,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:07,628 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 [2024-10-24 19:22:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:07,886 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:22:07,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:07,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811138999] [2024-10-24 19:22:07,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811138999] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:22:07,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:22:07,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:22:07,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530355162] [2024-10-24 19:22:07,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:22:07,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:22:07,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:07,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:22:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:22:07,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:07,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-10-24 19:22:07,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:07,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:07,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:08,860 INFO L124 PetriNetUnfolderBase]: 3041/4303 cut-off events. [2024-10-24 19:22:08,860 INFO L125 PetriNetUnfolderBase]: For 1338/1475 co-relation queries the response was YES. [2024-10-24 19:22:08,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10391 conditions, 4303 events. 3041/4303 cut-off events. For 1338/1475 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 21180 event pairs, 1261 based on Foata normal form. 191/4066 useless extension candidates. Maximal degree in co-relation 10357. Up to 2636 conditions per place. [2024-10-24 19:22:08,887 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 73 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-10-24 19:22:08,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 522 flow [2024-10-24 19:22:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:22:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:22:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-10-24 19:22:08,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45075757575757575 [2024-10-24 19:22:08,889 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 210 flow. Second operand 6 states and 119 transitions. [2024-10-24 19:22:08,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 522 flow [2024-10-24 19:22:08,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 501 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:22:08,894 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 269 flow [2024-10-24 19:22:08,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2024-10-24 19:22:08,895 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2024-10-24 19:22:08,895 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 269 flow [2024-10-24 19:22:08,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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) [2024-10-24 19:22:08,895 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:08,895 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:22:08,900 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 [2024-10-24 19:22:09,096 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 [2024-10-24 19:22:09,096 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:09,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:09,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1258395232, now seen corresponding path program 1 times [2024-10-24 19:22:09,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:09,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870523024] [2024-10-24 19:22:09,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:09,098 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 [2024-10-24 19:22:09,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:09,100 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) [2024-10-24 19:22:09,101 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 [2024-10-24 19:22:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:09,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 19:22:09,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:09,183 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 [2024-10-24 19:22:09,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:09,327 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:22:09,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:09,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870523024] [2024-10-24 19:22:09,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870523024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:22:09,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:22:09,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:22:09,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908327260] [2024-10-24 19:22:09,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:22:09,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:22:09,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:09,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:22:09,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:22:09,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-10-24 19:22:09,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2024-10-24 19:22:09,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:09,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-10-24 19:22:09,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:10,112 INFO L124 PetriNetUnfolderBase]: 2965/4390 cut-off events. [2024-10-24 19:22:10,112 INFO L125 PetriNetUnfolderBase]: For 3725/4096 co-relation queries the response was YES. [2024-10-24 19:22:10,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12336 conditions, 4390 events. 2965/4390 cut-off events. For 3725/4096 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 23210 event pairs, 1967 based on Foata normal form. 373/4647 useless extension candidates. Maximal degree in co-relation 12300. Up to 3813 conditions per place. [2024-10-24 19:22:10,141 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 73 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-10-24 19:22:10,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 503 flow [2024-10-24 19:22:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:22:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:22:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-10-24 19:22:10,143 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2024-10-24 19:22:10,143 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 269 flow. Second operand 5 states and 114 transitions. [2024-10-24 19:22:10,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 503 flow [2024-10-24 19:22:10,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 496 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:22:10,150 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 311 flow [2024-10-24 19:22:10,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=311, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-10-24 19:22:10,151 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2024-10-24 19:22:10,151 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 311 flow [2024-10-24 19:22:10,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 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) [2024-10-24 19:22:10,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:10,151 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:22:10,157 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 (8)] Forceful destruction successful, exit code 0 [2024-10-24 19:22:10,352 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 [2024-10-24 19:22:10,352 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:10,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:10,353 INFO L85 PathProgramCache]: Analyzing trace with hash -823240124, now seen corresponding path program 1 times [2024-10-24 19:22:10,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:10,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063348942] [2024-10-24 19:22:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:10,354 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 [2024-10-24 19:22:10,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:10,357 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) [2024-10-24 19:22:10,358 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 [2024-10-24 19:22:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:10,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:22:10,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:10,502 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:22:10,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:10,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063348942] [2024-10-24 19:22:10,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063348942] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:22:10,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:22:10,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:22:10,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765771535] [2024-10-24 19:22:10,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:22:10,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:22:10,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:10,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:22:10,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:22:10,531 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:10,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 311 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-10-24 19:22:10,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:10,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:10,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:11,264 INFO L124 PetriNetUnfolderBase]: 3459/4933 cut-off events. [2024-10-24 19:22:11,265 INFO L125 PetriNetUnfolderBase]: For 8248/8702 co-relation queries the response was YES. [2024-10-24 19:22:11,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16017 conditions, 4933 events. 3459/4933 cut-off events. For 8248/8702 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 24415 event pairs, 2384 based on Foata normal form. 306/4883 useless extension candidates. Maximal degree in co-relation 15979. Up to 4510 conditions per place. [2024-10-24 19:22:11,306 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 70 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2024-10-24 19:22:11,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 535 flow [2024-10-24 19:22:11,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:22:11,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:22:11,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-10-24 19:22:11,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-10-24 19:22:11,309 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 311 flow. Second operand 5 states and 102 transitions. [2024-10-24 19:22:11,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 535 flow [2024-10-24 19:22:11,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:22:11,317 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 331 flow [2024-10-24 19:22:11,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-10-24 19:22:11,318 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-10-24 19:22:11,318 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 331 flow [2024-10-24 19:22:11,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-10-24 19:22:11,318 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:11,319 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-24 19:22:11,323 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 [2024-10-24 19:22:11,519 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 [2024-10-24 19:22:11,520 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:11,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:11,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1820481312, now seen corresponding path program 2 times [2024-10-24 19:22:11,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:11,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019727516] [2024-10-24 19:22:11,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:22:11,521 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 [2024-10-24 19:22:11,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:11,522 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) [2024-10-24 19:22:11,523 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 [2024-10-24 19:22:11,587 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:22:11,587 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:22:11,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:22:11,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:11,602 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 [2024-10-24 19:22:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:11,876 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:22:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:12,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:12,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019727516] [2024-10-24 19:22:12,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019727516] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:22:12,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:22:12,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:22:12,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722934289] [2024-10-24 19:22:12,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:22:12,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:22:12,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:12,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:22:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:22:12,504 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:12,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 331 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:12,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:12,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:12,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:14,843 INFO L124 PetriNetUnfolderBase]: 2879/4291 cut-off events. [2024-10-24 19:22:14,843 INFO L125 PetriNetUnfolderBase]: For 7778/8192 co-relation queries the response was YES. [2024-10-24 19:22:14,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14278 conditions, 4291 events. 2879/4291 cut-off events. For 7778/8192 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 22624 event pairs, 1973 based on Foata normal form. 266/4373 useless extension candidates. Maximal degree in co-relation 14165. Up to 3924 conditions per place. [2024-10-24 19:22:14,868 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 43 selfloop transitions, 31 changer transitions 0/80 dead transitions. [2024-10-24 19:22:14,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 80 transitions, 575 flow [2024-10-24 19:22:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:22:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:22:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 264 transitions. [2024-10-24 19:22:14,872 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2727272727272727 [2024-10-24 19:22:14,872 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 331 flow. Second operand 22 states and 264 transitions. [2024-10-24 19:22:14,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 80 transitions, 575 flow [2024-10-24 19:22:14,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 80 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:22:14,882 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 514 flow [2024-10-24 19:22:14,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=514, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-10-24 19:22:14,884 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2024-10-24 19:22:14,884 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 514 flow [2024-10-24 19:22:14,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:14,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:14,884 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:22:14,888 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 [2024-10-24 19:22:15,085 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 [2024-10-24 19:22:15,085 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:15,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash -917733202, now seen corresponding path program 1 times [2024-10-24 19:22:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:15,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797186076] [2024-10-24 19:22:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:15,086 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 [2024-10-24 19:22:15,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:15,087 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) [2024-10-24 19:22:15,088 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 [2024-10-24 19:22:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:15,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 19:22:15,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:15,177 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 [2024-10-24 19:22:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:22:15,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:22:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:22:15,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797186076] [2024-10-24 19:22:15,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797186076] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:22:15,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:22:15,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:22:15,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381402228] [2024-10-24 19:22:15,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:22:15,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:22:15,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:22:15,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:22:16,106 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:16,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 514 flow. Second operand has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:16,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:16,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:16,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:18,633 INFO L124 PetriNetUnfolderBase]: 6247/8785 cut-off events. [2024-10-24 19:22:18,634 INFO L125 PetriNetUnfolderBase]: For 10960/11599 co-relation queries the response was YES. [2024-10-24 19:22:18,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29283 conditions, 8785 events. 6247/8785 cut-off events. For 10960/11599 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 44459 event pairs, 1139 based on Foata normal form. 638/9315 useless extension candidates. Maximal degree in co-relation 29225. Up to 2351 conditions per place. [2024-10-24 19:22:18,714 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 236 selfloop transitions, 32 changer transitions 2/275 dead transitions. [2024-10-24 19:22:18,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 275 transitions, 1943 flow [2024-10-24 19:22:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 19:22:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 19:22:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 305 transitions. [2024-10-24 19:22:18,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5332167832167832 [2024-10-24 19:22:18,717 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 514 flow. Second operand 13 states and 305 transitions. [2024-10-24 19:22:18,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 275 transitions, 1943 flow [2024-10-24 19:22:18,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 275 transitions, 1863 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-10-24 19:22:18,741 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 596 flow [2024-10-24 19:22:18,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=596, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2024-10-24 19:22:18,743 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 53 predicate places. [2024-10-24 19:22:18,743 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 596 flow [2024-10-24 19:22:18,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.571428571428571) internal successors, (148), 14 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:22:18,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:18,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:22:18,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-24 19:22:18,944 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 [2024-10-24 19:22:18,944 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:18,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:18,945 INFO L85 PathProgramCache]: Analyzing trace with hash 436255158, now seen corresponding path program 1 times [2024-10-24 19:22:18,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:18,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296052124] [2024-10-24 19:22:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:18,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:22:18,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:18,949 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) [2024-10-24 19:22:18,950 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 [2024-10-24 19:22:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:19,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 19:22:19,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:19,022 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 [2024-10-24 19:22:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:19,307 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:22:20,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:20,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:20,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296052124] [2024-10-24 19:22:20,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296052124] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:22:20,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:22:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:22:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121184915] [2024-10-24 19:22:20,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:22:20,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:22:20,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:20,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:22:20,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:22:20,462 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 44 [2024-10-24 19:22:20,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 596 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 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) [2024-10-24 19:22:20,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:20,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 44 [2024-10-24 19:22:20,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:25,944 INFO L124 PetriNetUnfolderBase]: 19592/27877 cut-off events. [2024-10-24 19:22:25,944 INFO L125 PetriNetUnfolderBase]: For 73938/75459 co-relation queries the response was YES. [2024-10-24 19:22:26,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106647 conditions, 27877 events. 19592/27877 cut-off events. For 73938/75459 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 166510 event pairs, 8590 based on Foata normal form. 1615/27491 useless extension candidates. Maximal degree in co-relation 106589. Up to 7409 conditions per place. [2024-10-24 19:22:26,231 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 284 selfloop transitions, 43 changer transitions 0/336 dead transitions. [2024-10-24 19:22:26,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 336 transitions, 2852 flow [2024-10-24 19:22:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 19:22:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 19:22:26,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 314 transitions. [2024-10-24 19:22:26,233 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-10-24 19:22:26,233 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 596 flow. Second operand 16 states and 314 transitions. [2024-10-24 19:22:26,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 336 transitions, 2852 flow [2024-10-24 19:22:26,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 336 transitions, 2681 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-10-24 19:22:26,374 INFO L231 Difference]: Finished difference. Result has 116 places, 107 transitions, 835 flow [2024-10-24 19:22:26,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=835, PETRI_PLACES=116, PETRI_TRANSITIONS=107} [2024-10-24 19:22:26,375 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2024-10-24 19:22:26,375 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 107 transitions, 835 flow [2024-10-24 19:22:26,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 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) [2024-10-24 19:22:26,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:26,376 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:22:26,381 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 [2024-10-24 19:22:26,576 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 [2024-10-24 19:22:26,577 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:26,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash 853203654, now seen corresponding path program 1 times [2024-10-24 19:22:26,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395411704] [2024-10-24 19:22:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:26,578 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 [2024-10-24 19:22:26,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:26,579 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) [2024-10-24 19:22:26,580 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 [2024-10-24 19:22:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:26,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 19:22:26,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:26,819 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 [2024-10-24 19:22:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:22:27,109 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:22:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:22:27,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:27,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395411704] [2024-10-24 19:22:27,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395411704] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:22:27,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:22:27,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:22:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609048817] [2024-10-24 19:22:27,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:22:27,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:22:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:27,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:22:27,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:22:27,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:27,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 107 transitions, 835 flow. Second operand has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 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) [2024-10-24 19:22:27,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:27,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:27,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:22:34,939 INFO L124 PetriNetUnfolderBase]: 32942/45635 cut-off events. [2024-10-24 19:22:34,939 INFO L125 PetriNetUnfolderBase]: For 160432/169718 co-relation queries the response was YES. [2024-10-24 19:22:35,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188323 conditions, 45635 events. 32942/45635 cut-off events. For 160432/169718 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 271186 event pairs, 6387 based on Foata normal form. 5670/50236 useless extension candidates. Maximal degree in co-relation 188255. Up to 13735 conditions per place. [2024-10-24 19:22:35,450 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 369 selfloop transitions, 37 changer transitions 4/421 dead transitions. [2024-10-24 19:22:35,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 421 transitions, 3984 flow [2024-10-24 19:22:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 19:22:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 19:22:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 293 transitions. [2024-10-24 19:22:35,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5122377622377622 [2024-10-24 19:22:35,453 INFO L175 Difference]: Start difference. First operand has 116 places, 107 transitions, 835 flow. Second operand 13 states and 293 transitions. [2024-10-24 19:22:35,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 421 transitions, 3984 flow [2024-10-24 19:22:35,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 421 transitions, 3849 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-10-24 19:22:35,774 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 970 flow [2024-10-24 19:22:35,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=970, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2024-10-24 19:22:35,775 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 79 predicate places. [2024-10-24 19:22:35,775 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 970 flow [2024-10-24 19:22:35,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.857142857142858) internal successors, (152), 14 states have internal predecessors, (152), 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) [2024-10-24 19:22:35,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:22:35,775 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:22:35,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-24 19:22:35,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:22:35,976 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:22:35,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:22:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1450290675, now seen corresponding path program 1 times [2024-10-24 19:22:35,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:22:35,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422582599] [2024-10-24 19:22:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:22:35,977 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 [2024-10-24 19:22:35,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:22:35,981 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:22:35,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-24 19:22:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:22:36,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 19:22:36,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:22:36,073 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 [2024-10-24 19:22:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:36,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:22:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:22:38,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:22:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422582599] [2024-10-24 19:22:38,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422582599] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:22:38,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:22:38,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2024-10-24 19:22:38,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991784422] [2024-10-24 19:22:38,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:22:38,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-24 19:22:38,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:22:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-24 19:22:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-10-24 19:22:38,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:22:38,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 970 flow. Second operand has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 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) [2024-10-24 19:22:38,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:22:38,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:22:38,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:23:06,684 INFO L124 PetriNetUnfolderBase]: 90693/124860 cut-off events. [2024-10-24 19:23:06,684 INFO L125 PetriNetUnfolderBase]: For 586427/596842 co-relation queries the response was YES. [2024-10-24 19:23:07,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583314 conditions, 124860 events. 90693/124860 cut-off events. For 586427/596842 co-relation queries the response was YES. Maximal size of possible extension queue 2417. Compared 817613 event pairs, 27422 based on Foata normal form. 7586/122779 useless extension candidates. Maximal degree in co-relation 583241. Up to 39073 conditions per place. [2024-10-24 19:23:08,740 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 719 selfloop transitions, 80 changer transitions 0/813 dead transitions. [2024-10-24 19:23:08,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 813 transitions, 8039 flow [2024-10-24 19:23:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-24 19:23:08,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-10-24 19:23:08,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 573 transitions. [2024-10-24 19:23:08,744 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5008741258741258 [2024-10-24 19:23:08,744 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 970 flow. Second operand 26 states and 573 transitions. [2024-10-24 19:23:08,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 813 transitions, 8039 flow [2024-10-24 19:23:12,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 813 transitions, 7471 flow, removed 133 selfloop flow, removed 5 redundant places. [2024-10-24 19:23:12,201 INFO L231 Difference]: Finished difference. Result has 148 places, 172 transitions, 1757 flow [2024-10-24 19:23:12,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1757, PETRI_PLACES=148, PETRI_TRANSITIONS=172} [2024-10-24 19:23:12,202 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 102 predicate places. [2024-10-24 19:23:12,202 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 172 transitions, 1757 flow [2024-10-24 19:23:12,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 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) [2024-10-24 19:23:12,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:23:12,202 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:23:12,209 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 (14)] Ended with exit code 0 [2024-10-24 19:23:12,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:23:12,403 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-10-24 19:23:12,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:23:12,403 INFO L85 PathProgramCache]: Analyzing trace with hash -786440948, now seen corresponding path program 2 times [2024-10-24 19:23:12,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:23:12,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649509206] [2024-10-24 19:23:12,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:23:12,404 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 [2024-10-24 19:23:12,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:23:12,405 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:23:12,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-24 19:23:12,467 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:23:12,467 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:23:12,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 19:23:12,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:23:12,481 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 8 treesize of output 7 [2024-10-24 19:23:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 19:23:12,714 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:23:12,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:23:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649509206] [2024-10-24 19:23:12,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649509206] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:23:12,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:23:12,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:23:12,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606802544] [2024-10-24 19:23:12,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:23:12,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:23:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:23:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:23:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:23:12,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-10-24 19:23:12,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 172 transitions, 1757 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2024-10-24 19:23:12,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:23:12,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-10-24 19:23:12,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand