./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/unroll-cond-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d 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/unroll-cond-3.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 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:48:17,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:48:17,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:48:17,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:48:17,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:48:17,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:48:17,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:48:17,836 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:48:17,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:48:17,839 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:48:17,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:48:17,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:48:17,840 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:48:17,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:48:17,842 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:48:17,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:48:17,842 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:48:17,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:48:17,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:48:17,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:48:17,845 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:48:17,846 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:48:17,846 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:48:17,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:48:17,847 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:48:17,847 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:48:17,847 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:48:17,847 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:48:17,847 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:48:17,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:48:17,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:48:17,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:48:17,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:48:17,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:48:17,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:48:17,849 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:48:17,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:48:17,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:48:17,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:48:17,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:48:17,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:48:17,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:48:17,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 [2024-10-13 12:48:18,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:48:18,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:48:18,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:48:18,109 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:48:18,109 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:48:18,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-10-13 12:48:19,521 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:48:19,702 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:48:19,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-10-13 12:48:19,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d5b6b04/17bd981d12b240f8ae0df328b7c6b113/FLAGd091f1ef0 [2024-10-13 12:48:19,728 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d5b6b04/17bd981d12b240f8ae0df328b7c6b113 [2024-10-13 12:48:19,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:48:19,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:48:19,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:48:19,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:48:19,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:48:19,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:48:19" (1/1) ... [2024-10-13 12:48:19,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f6e674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:19, skipping insertion in model container [2024-10-13 12:48:19,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:48:19" (1/1) ... [2024-10-13 12:48:19,769 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:48:20,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:48:20,031 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) [2024-10-13 12:48:20,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@cfdc49a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:20, skipping insertion in model container [2024-10-13 12:48:20,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:48:20,033 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-13 12:48:20,034 INFO L158 Benchmark]: Toolchain (without parser) took 300.80ms. Allocated memory is still 163.6MB. Free memory was 95.9MB in the beginning and 132.0MB in the end (delta: -36.1MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2024-10-13 12:48:20,035 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-13 12:48:20,036 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.63ms. Allocated memory is still 163.6MB. Free memory was 95.8MB in the beginning and 132.0MB in the end (delta: -36.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2024-10-13 12:48:20,037 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.63ms. Allocated memory is still 163.6MB. Free memory was 95.8MB in the beginning and 132.0MB in the end (delta: -36.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 108]: 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/unroll-cond-3.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 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:48:22,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:48:22,110 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-13 12:48:22,115 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:48:22,116 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:48:22,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:48:22,155 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:48:22,155 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:48:22,156 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:48:22,157 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:48:22,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:48:22,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:48:22,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:48:22,160 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:48:22,160 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:48:22,161 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:48:22,161 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:48:22,161 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:48:22,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:48:22,162 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:48:22,162 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:48:22,166 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:48:22,166 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:48:22,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:48:22,167 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:48:22,167 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-13 12:48:22,167 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:48:22,167 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-13 12:48:22,167 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:48:22,168 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:48:22,168 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:48:22,168 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:48:22,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:48:22,169 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:48:22,169 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:48:22,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:48:22,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:48:22,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:48:22,170 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-13 12:48:22,170 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-13 12:48:22,170 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:48:22,170 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:48:22,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:48:22,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:48:22,171 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-13 12:48:22,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fb4c28a8a216c266c6ae14d377c8e26c68bb16bf7c2fe2809f039d12d6c4b55 [2024-10-13 12:48:22,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:48:22,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:48:22,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:48:22,519 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:48:22,521 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:48:22,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-10-13 12:48:24,069 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:48:24,272 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:48:24,272 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2024-10-13 12:48:24,279 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e72ef4cf/ad292ccfbf0e45d1b96a079f42ccffc6/FLAG898fcf6f6 [2024-10-13 12:48:24,642 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e72ef4cf/ad292ccfbf0e45d1b96a079f42ccffc6 [2024-10-13 12:48:24,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:48:24,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:48:24,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:48:24,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:48:24,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:48:24,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:48:24" (1/1) ... [2024-10-13 12:48:24,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1bb990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:24, skipping insertion in model container [2024-10-13 12:48:24,655 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:48:24" (1/1) ... [2024-10-13 12:48:24,690 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:48:24,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:48:24,936 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-13 12:48:24,943 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:48:24,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:48:24,976 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:48:25,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:48:25,040 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:48:25,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25 WrapperNode [2024-10-13 12:48:25,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:48:25,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:48:25,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:48:25,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:48:25,049 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,064 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,096 INFO L138 Inliner]: procedures = 25, calls = 28, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 155 [2024-10-13 12:48:25,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:48:25,100 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:48:25,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:48:25,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:48:25,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,117 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,141 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 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]. [2024-10-13 12:48:25,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,143 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:48:25,171 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:48:25,172 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:48:25,172 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:48:25,173 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (1/1) ... [2024-10-13 12:48:25,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:48:25,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:48:25,203 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) [2024-10-13 12:48:25,209 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 [2024-10-13 12:48:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:48:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:48:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:48:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:48:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:48:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-13 12:48:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-13 12:48:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 12:48:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-13 12:48:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-13 12:48:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:48:25,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:48:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-13 12:48:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-13 12:48:25,269 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:48:25,387 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:48:25,389 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:48:25,837 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:48:25,837 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:48:26,140 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:48:26,140 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 12:48:26,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:48:26 BoogieIcfgContainer [2024-10-13 12:48:26,141 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:48:26,144 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:48:26,144 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:48:26,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:48:26,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:48:24" (1/3) ... [2024-10-13 12:48:26,149 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d94a5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:48:26, skipping insertion in model container [2024-10-13 12:48:26,149 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:48:25" (2/3) ... [2024-10-13 12:48:26,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d94a5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:48:26, skipping insertion in model container [2024-10-13 12:48:26,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:48:26" (3/3) ... [2024-10-13 12:48:26,151 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2024-10-13 12:48:26,165 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:48:26,165 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-13 12:48:26,165 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:48:26,230 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 12:48:26,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 48 transitions, 110 flow [2024-10-13 12:48:26,296 INFO L124 PetriNetUnfolderBase]: 5/46 cut-off events. [2024-10-13 12:48:26,297 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 12:48:26,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 46 events. 5/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 110 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-10-13 12:48:26,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 48 transitions, 110 flow [2024-10-13 12:48:26,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 45 transitions, 102 flow [2024-10-13 12:48:26,319 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:48:26,326 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;@839b262, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:48:26,328 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-10-13 12:48:26,331 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:48:26,332 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-13 12:48:26,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 12:48:26,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:26,333 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:48:26,333 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:26,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash 542186, now seen corresponding path program 1 times [2024-10-13 12:48:26,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:26,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735668845] [2024-10-13 12:48:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:26,352 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 [2024-10-13 12:48:26,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:26,356 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) [2024-10-13 12:48:26,357 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 [2024-10-13 12:48:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:26,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:48:26,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:26,490 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 [2024-10-13 12:48:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:26,511 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:48:26,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:26,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735668845] [2024-10-13 12:48:26,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735668845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:48:26,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:48:26,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 12:48:26,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416708270] [2024-10-13 12:48:26,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:48:26,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:48:26,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:26,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:48:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:48:26,584 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-10-13 12:48:26,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:26,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:26,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-10-13 12:48:26,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:26,786 INFO L124 PetriNetUnfolderBase]: 146/348 cut-off events. [2024-10-13 12:48:26,786 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-13 12:48:26,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 348 events. 146/348 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1781 event pairs, 97 based on Foata normal form. 1/274 useless extension candidates. Maximal degree in co-relation 534. Up to 239 conditions per place. [2024-10-13 12:48:26,791 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 24 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-10-13 12:48:26,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 148 flow [2024-10-13 12:48:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:48:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:48:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-10-13 12:48:26,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-10-13 12:48:26,804 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 102 flow. Second operand 3 states and 85 transitions. [2024-10-13 12:48:26,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 148 flow [2024-10-13 12:48:26,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:48:26,811 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 92 flow [2024-10-13 12:48:26,814 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2024-10-13 12:48:26,820 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -5 predicate places. [2024-10-13 12:48:26,820 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 92 flow [2024-10-13 12:48:26,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:26,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:26,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-13 12:48:26,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-13 12:48:27,024 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 [2024-10-13 12:48:27,025 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:27,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:27,025 INFO L85 PathProgramCache]: Analyzing trace with hash 542187, now seen corresponding path program 1 times [2024-10-13 12:48:27,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:27,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529207903] [2024-10-13 12:48:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:27,026 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 [2024-10-13 12:48:27,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:27,029 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) [2024-10-13 12:48:27,030 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 [2024-10-13 12:48:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:27,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:48:27,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:27,116 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 [2024-10-13 12:48:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:27,227 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:48:27,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529207903] [2024-10-13 12:48:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529207903] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:48:27,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:48:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:48:27,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370126210] [2024-10-13 12:48:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:48:27,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:48:27,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:48:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:48:27,325 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-10-13 12:48:27,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:27,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:27,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-10-13 12:48:27,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:27,543 INFO L124 PetriNetUnfolderBase]: 146/350 cut-off events. [2024-10-13 12:48:27,543 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 12:48:27,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 350 events. 146/350 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1784 event pairs, 97 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 585. Up to 243 conditions per place. [2024-10-13 12:48:27,546 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 27 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-10-13 12:48:27,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 154 flow [2024-10-13 12:48:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:48:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:48:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-10-13 12:48:27,549 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-10-13 12:48:27,549 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 92 flow. Second operand 3 states and 88 transitions. [2024-10-13 12:48:27,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 154 flow [2024-10-13 12:48:27,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:48:27,551 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 102 flow [2024-10-13 12:48:27,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2024-10-13 12:48:27,552 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, -4 predicate places. [2024-10-13 12:48:27,552 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 102 flow [2024-10-13 12:48:27,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:27,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:27,553 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-13 12:48:27,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-13 12:48:27,753 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 [2024-10-13 12:48:27,755 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:27,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash 521058227, now seen corresponding path program 1 times [2024-10-13 12:48:27,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:27,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595217103] [2024-10-13 12:48:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:27,758 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 [2024-10-13 12:48:27,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:27,760 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) [2024-10-13 12:48:27,761 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 [2024-10-13 12:48:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:27,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-13 12:48:27,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:27,839 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 [2024-10-13 12:48:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:28,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:48:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:28,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:28,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595217103] [2024-10-13 12:48:28,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595217103] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:48:28,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:48:28,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2024-10-13 12:48:28,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077647404] [2024-10-13 12:48:28,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:48:28,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 12:48:28,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:28,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 12:48:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-13 12:48:28,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-10-13 12:48:28,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 102 flow. Second operand has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 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) [2024-10-13 12:48:28,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:28,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-10-13 12:48:28,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:29,302 INFO L124 PetriNetUnfolderBase]: 149/359 cut-off events. [2024-10-13 12:48:29,303 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 12:48:29,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 359 events. 149/359 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1848 event pairs, 97 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 620. Up to 246 conditions per place. [2024-10-13 12:48:29,306 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 27 selfloop transitions, 11 changer transitions 0/53 dead transitions. [2024-10-13 12:48:29,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 210 flow [2024-10-13 12:48:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:48:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:48:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-10-13 12:48:29,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-10-13 12:48:29,310 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 102 flow. Second operand 9 states and 212 transitions. [2024-10-13 12:48:29,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 210 flow [2024-10-13 12:48:29,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:48:29,313 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 174 flow [2024-10-13 12:48:29,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-10-13 12:48:29,313 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2024-10-13 12:48:29,314 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 174 flow [2024-10-13 12:48:29,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 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) [2024-10-13 12:48:29,314 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:29,314 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:29,319 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 (4)] Forceful destruction successful, exit code 0 [2024-10-13 12:48:29,517 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 [2024-10-13 12:48:29,517 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:29,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash 836940031, now seen corresponding path program 1 times [2024-10-13 12:48:29,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:29,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846310987] [2024-10-13 12:48:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:29,519 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 [2024-10-13 12:48:29,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:29,521 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) [2024-10-13 12:48:29,522 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 [2024-10-13 12:48:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:29,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-13 12:48:29,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:29,597 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 [2024-10-13 12:48:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:29,641 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:48:29,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:29,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846310987] [2024-10-13 12:48:29,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846310987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:48:29,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:48:29,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:48:29,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694331625] [2024-10-13 12:48:29,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:48:29,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:48:29,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:29,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:48:29,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:48:29,707 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-10-13 12:48:29,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-10-13 12:48:29,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:29,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-10-13 12:48:29,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:29,840 INFO L124 PetriNetUnfolderBase]: 149/315 cut-off events. [2024-10-13 12:48:29,840 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-10-13 12:48:29,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 315 events. 149/315 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1337 event pairs, 97 based on Foata normal form. 0/285 useless extension candidates. Maximal degree in co-relation 580. Up to 241 conditions per place. [2024-10-13 12:48:29,843 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 32 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2024-10-13 12:48:29,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 47 transitions, 236 flow [2024-10-13 12:48:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:48:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:48:29,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-10-13 12:48:29,845 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-10-13 12:48:29,845 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 174 flow. Second operand 4 states and 84 transitions. [2024-10-13 12:48:29,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 47 transitions, 236 flow [2024-10-13 12:48:29,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 222 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 12:48:29,847 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 158 flow [2024-10-13 12:48:29,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-10-13 12:48:29,848 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-10-13 12:48:29,848 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 158 flow [2024-10-13 12:48:29,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-10-13 12:48:29,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:29,849 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:29,853 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 [2024-10-13 12:48:30,049 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 [2024-10-13 12:48:30,050 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:30,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:30,051 INFO L85 PathProgramCache]: Analyzing trace with hash 836940032, now seen corresponding path program 1 times [2024-10-13 12:48:30,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:30,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233027377] [2024-10-13 12:48:30,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:30,051 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 [2024-10-13 12:48:30,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:30,056 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) [2024-10-13 12:48:30,057 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 [2024-10-13 12:48:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:30,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:48:30,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:30,211 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:48:30,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-13 12:48:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:30,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:30,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233027377] [2024-10-13 12:48:30,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233027377] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:48:30,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:48:30,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-13 12:48:30,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785877395] [2024-10-13 12:48:30,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:48:30,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 12:48:30,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:30,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 12:48:30,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 12:48:30,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-10-13 12:48:30,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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) [2024-10-13 12:48:30,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:30,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-10-13 12:48:30,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:31,093 INFO L124 PetriNetUnfolderBase]: 327/600 cut-off events. [2024-10-13 12:48:31,093 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 12:48:31,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1177 conditions, 600 events. 327/600 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2782 event pairs, 111 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 1145. Up to 299 conditions per place. [2024-10-13 12:48:31,097 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 50 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2024-10-13 12:48:31,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 317 flow [2024-10-13 12:48:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:48:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:48:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-10-13 12:48:31,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5798611111111112 [2024-10-13 12:48:31,106 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 158 flow. Second operand 6 states and 167 transitions. [2024-10-13 12:48:31,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 317 flow [2024-10-13 12:48:31,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 67 transitions, 311 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:48:31,109 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 179 flow [2024-10-13 12:48:31,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2024-10-13 12:48:31,110 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 6 predicate places. [2024-10-13 12:48:31,110 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 179 flow [2024-10-13 12:48:31,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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) [2024-10-13 12:48:31,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:31,111 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:31,114 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 [2024-10-13 12:48:31,311 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 [2024-10-13 12:48:31,312 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:31,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:31,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1120187728, now seen corresponding path program 1 times [2024-10-13 12:48:31,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:31,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499673152] [2024-10-13 12:48:31,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:31,314 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 [2024-10-13 12:48:31,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:31,315 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) [2024-10-13 12:48:31,316 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 [2024-10-13 12:48:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:31,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-13 12:48:31,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:31,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:48:31,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2024-10-13 12:48:31,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:31,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:31,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499673152] [2024-10-13 12:48:31,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499673152] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:48:31,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:48:31,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-13 12:48:31,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026587880] [2024-10-13 12:48:31,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:48:31,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 12:48:31,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:31,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 12:48:31,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 12:48:31,834 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 12:48:31,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 179 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:31,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:31,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 12:48:31,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:32,250 INFO L124 PetriNetUnfolderBase]: 589/1013 cut-off events. [2024-10-13 12:48:32,251 INFO L125 PetriNetUnfolderBase]: For 133/169 co-relation queries the response was YES. [2024-10-13 12:48:32,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 1013 events. 589/1013 cut-off events. For 133/169 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4569 event pairs, 144 based on Foata normal form. 0/807 useless extension candidates. Maximal degree in co-relation 2118. Up to 638 conditions per place. [2024-10-13 12:48:32,257 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 50 selfloop transitions, 10 changer transitions 0/65 dead transitions. [2024-10-13 12:48:32,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 340 flow [2024-10-13 12:48:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 12:48:32,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 12:48:32,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-10-13 12:48:32,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-10-13 12:48:32,259 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 179 flow. Second operand 6 states and 145 transitions. [2024-10-13 12:48:32,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 340 flow [2024-10-13 12:48:32,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 332 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:48:32,262 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 217 flow [2024-10-13 12:48:32,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-10-13 12:48:32,263 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2024-10-13 12:48:32,263 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 217 flow [2024-10-13 12:48:32,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:32,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:32,264 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:32,268 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 [2024-10-13 12:48:32,464 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 [2024-10-13 12:48:32,465 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:32,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:32,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1140504004, now seen corresponding path program 1 times [2024-10-13 12:48:32,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:32,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629532729] [2024-10-13 12:48:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:32,466 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 [2024-10-13 12:48:32,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:32,467 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) [2024-10-13 12:48:32,468 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 [2024-10-13 12:48:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:32,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:48:32,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:32,550 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 [2024-10-13 12:48:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:32,775 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:48:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:33,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629532729] [2024-10-13 12:48:33,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629532729] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:48:33,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:48:33,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-13 12:48:33,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433106712] [2024-10-13 12:48:33,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:48:33,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:48:33,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:33,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:48:33,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:48:35,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-13 12:48:35,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 217 flow. Second operand has 11 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:35,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:35,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-13 12:48:35,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:36,602 INFO L124 PetriNetUnfolderBase]: 1457/2671 cut-off events. [2024-10-13 12:48:36,602 INFO L125 PetriNetUnfolderBase]: For 249/249 co-relation queries the response was YES. [2024-10-13 12:48:36,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 2671 events. 1457/2671 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 15619 event pairs, 909 based on Foata normal form. 0/2311 useless extension candidates. Maximal degree in co-relation 4007. Up to 829 conditions per place. [2024-10-13 12:48:36,617 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 113 selfloop transitions, 16 changer transitions 0/137 dead transitions. [2024-10-13 12:48:36,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 137 transitions, 725 flow [2024-10-13 12:48:36,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:48:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:48:36,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 292 transitions. [2024-10-13 12:48:36,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-10-13 12:48:36,620 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 217 flow. Second operand 10 states and 292 transitions. [2024-10-13 12:48:36,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 137 transitions, 725 flow [2024-10-13 12:48:36,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 137 transitions, 700 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:48:36,624 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 272 flow [2024-10-13 12:48:36,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=272, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-10-13 12:48:36,625 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2024-10-13 12:48:36,625 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 272 flow [2024-10-13 12:48:36,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:36,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:36,625 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:36,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-13 12:48:36,826 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 [2024-10-13 12:48:36,826 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:36,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:36,827 INFO L85 PathProgramCache]: Analyzing trace with hash 366081770, now seen corresponding path program 1 times [2024-10-13 12:48:36,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:36,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251739303] [2024-10-13 12:48:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:36,827 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 [2024-10-13 12:48:36,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:36,830 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) [2024-10-13 12:48:36,831 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 [2024-10-13 12:48:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:36,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-13 12:48:36,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:36,906 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 [2024-10-13 12:48:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:37,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:48:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:37,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:37,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251739303] [2024-10-13 12:48:37,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251739303] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:48:37,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:48:37,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2024-10-13 12:48:37,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924920695] [2024-10-13 12:48:37,847 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:48:37,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:48:37,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:48:37,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:48:40,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-13 12:48:40,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 272 flow. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:40,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:40,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-13 12:48:40,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:41,455 INFO L124 PetriNetUnfolderBase]: 1519/2597 cut-off events. [2024-10-13 12:48:41,455 INFO L125 PetriNetUnfolderBase]: For 1240/1276 co-relation queries the response was YES. [2024-10-13 12:48:41,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6294 conditions, 2597 events. 1519/2597 cut-off events. For 1240/1276 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 13692 event pairs, 831 based on Foata normal form. 0/2415 useless extension candidates. Maximal degree in co-relation 4982. Up to 931 conditions per place. [2024-10-13 12:48:41,469 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 87 selfloop transitions, 26 changer transitions 0/117 dead transitions. [2024-10-13 12:48:41,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 117 transitions, 678 flow [2024-10-13 12:48:41,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:48:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:48:41,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-10-13 12:48:41,472 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-10-13 12:48:41,472 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 272 flow. Second operand 10 states and 248 transitions. [2024-10-13 12:48:41,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 117 transitions, 678 flow [2024-10-13 12:48:41,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 117 transitions, 670 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-13 12:48:41,478 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 416 flow [2024-10-13 12:48:41,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=416, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-10-13 12:48:41,480 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 24 predicate places. [2024-10-13 12:48:41,481 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 416 flow [2024-10-13 12:48:41,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:41,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:41,482 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-13 12:48:41,488 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 (9)] Forceful destruction successful, exit code 0 [2024-10-13 12:48:41,682 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 [2024-10-13 12:48:41,683 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:41,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1010049291, now seen corresponding path program 2 times [2024-10-13 12:48:41,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:41,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934520649] [2024-10-13 12:48:41,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:48:41,684 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 [2024-10-13 12:48:41,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:41,685 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) [2024-10-13 12:48:41,687 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 [2024-10-13 12:48:41,743 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:48:41,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:48:41,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 12:48:41,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:41,759 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 [2024-10-13 12:48:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:42,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:48:42,643 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:48:42,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:42,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934520649] [2024-10-13 12:48:42,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934520649] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:48:42,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:48:42,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-13 12:48:42,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82488393] [2024-10-13 12:48:42,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:48:42,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:48:42,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:42,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:48:42,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:48:43,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-10-13 12:48:43,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 416 flow. Second operand has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:43,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:43,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-10-13 12:48:43,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:45,701 INFO L124 PetriNetUnfolderBase]: 1418/2482 cut-off events. [2024-10-13 12:48:45,701 INFO L125 PetriNetUnfolderBase]: For 1652/1672 co-relation queries the response was YES. [2024-10-13 12:48:45,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6890 conditions, 2482 events. 1418/2482 cut-off events. For 1652/1672 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 13570 event pairs, 1062 based on Foata normal form. 6/2476 useless extension candidates. Maximal degree in co-relation 5421. Up to 2211 conditions per place. [2024-10-13 12:48:45,716 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 53 selfloop transitions, 29 changer transitions 0/91 dead transitions. [2024-10-13 12:48:45,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 760 flow [2024-10-13 12:48:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-13 12:48:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-13 12:48:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 461 transitions. [2024-10-13 12:48:45,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4573412698412698 [2024-10-13 12:48:45,719 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 416 flow. Second operand 21 states and 461 transitions. [2024-10-13 12:48:45,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 760 flow [2024-10-13 12:48:45,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 735 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:48:45,733 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 659 flow [2024-10-13 12:48:45,734 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=659, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2024-10-13 12:48:45,735 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2024-10-13 12:48:45,735 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 659 flow [2024-10-13 12:48:45,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.571428571428573) internal successors, (288), 14 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:45,736 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:45,736 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:45,740 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 [2024-10-13 12:48:45,937 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 [2024-10-13 12:48:45,937 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:45,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1492738924, now seen corresponding path program 2 times [2024-10-13 12:48:45,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:45,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296874144] [2024-10-13 12:48:45,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:48:45,938 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 [2024-10-13 12:48:45,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:45,939 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) [2024-10-13 12:48:45,940 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 [2024-10-13 12:48:46,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 12:48:46,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:48:46,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:48:46,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:46,009 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 [2024-10-13 12:48:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 12:48:46,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:48:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 12:48:46,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:46,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296874144] [2024-10-13 12:48:46,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296874144] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:48:46,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:48:46,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-13 12:48:46,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625111996] [2024-10-13 12:48:46,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:48:46,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 12:48:46,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:46,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 12:48:46,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-13 12:48:47,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-10-13 12:48:47,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 659 flow. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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) [2024-10-13 12:48:47,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:47,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-10-13 12:48:47,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:48,005 INFO L124 PetriNetUnfolderBase]: 1394/2426 cut-off events. [2024-10-13 12:48:48,005 INFO L125 PetriNetUnfolderBase]: For 1455/1455 co-relation queries the response was YES. [2024-10-13 12:48:48,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 2426 events. 1394/2426 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13508 event pairs, 756 based on Foata normal form. 36/2457 useless extension candidates. Maximal degree in co-relation 6719. Up to 1648 conditions per place. [2024-10-13 12:48:48,019 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 94 selfloop transitions, 20 changer transitions 0/123 dead transitions. [2024-10-13 12:48:48,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 123 transitions, 1038 flow [2024-10-13 12:48:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:48:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:48:48,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-10-13 12:48:48,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-10-13 12:48:48,021 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 659 flow. Second operand 5 states and 136 transitions. [2024-10-13 12:48:48,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 123 transitions, 1038 flow [2024-10-13 12:48:48,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 123 transitions, 944 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-10-13 12:48:48,029 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 597 flow [2024-10-13 12:48:48,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=597, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2024-10-13 12:48:48,030 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 39 predicate places. [2024-10-13 12:48:48,030 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 597 flow [2024-10-13 12:48:48,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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) [2024-10-13 12:48:48,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:48,031 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:48,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-13 12:48:48,231 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 [2024-10-13 12:48:48,232 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:48,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1599537598, now seen corresponding path program 2 times [2024-10-13 12:48:48,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:48,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62067815] [2024-10-13 12:48:48,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:48:48,233 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 [2024-10-13 12:48:48,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:48,234 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) [2024-10-13 12:48:48,235 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 [2024-10-13 12:48:48,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 12:48:48,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:48:48,305 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:48:48,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:48,320 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 [2024-10-13 12:48:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-13 12:48:48,526 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:48:48,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:48,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62067815] [2024-10-13 12:48:48,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62067815] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:48:48,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:48:48,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 12:48:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007844462] [2024-10-13 12:48:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:48:48,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:48:48,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:48:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:48:48,657 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-10-13 12:48:48,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 597 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:48,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:48,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-10-13 12:48:48,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:49,038 INFO L124 PetriNetUnfolderBase]: 1414/2386 cut-off events. [2024-10-13 12:48:49,038 INFO L125 PetriNetUnfolderBase]: For 2153/2153 co-relation queries the response was YES. [2024-10-13 12:48:49,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6842 conditions, 2386 events. 1414/2386 cut-off events. For 2153/2153 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12305 event pairs, 558 based on Foata normal form. 80/2454 useless extension candidates. Maximal degree in co-relation 6786. Up to 1222 conditions per place. [2024-10-13 12:48:49,053 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 59 selfloop transitions, 35 changer transitions 0/98 dead transitions. [2024-10-13 12:48:49,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 98 transitions, 824 flow [2024-10-13 12:48:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:48:49,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:48:49,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-10-13 12:48:49,055 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-13 12:48:49,056 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 597 flow. Second operand 5 states and 112 transitions. [2024-10-13 12:48:49,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 98 transitions, 824 flow [2024-10-13 12:48:49,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 98 transitions, 750 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:48:49,063 INFO L231 Difference]: Finished difference. Result has 79 places, 85 transitions, 575 flow [2024-10-13 12:48:49,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=79, PETRI_TRANSITIONS=85} [2024-10-13 12:48:49,066 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2024-10-13 12:48:49,067 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 85 transitions, 575 flow [2024-10-13 12:48:49,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:49,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:49,067 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:49,071 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 [2024-10-13 12:48:49,267 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 [2024-10-13 12:48:49,268 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:49,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1789548028, now seen corresponding path program 1 times [2024-10-13 12:48:49,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:49,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279245828] [2024-10-13 12:48:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:49,269 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 [2024-10-13 12:48:49,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:49,270 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) [2024-10-13 12:48:49,271 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 [2024-10-13 12:48:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:49,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:48:49,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:49,386 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:48:49,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:49,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279245828] [2024-10-13 12:48:49,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279245828] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:48:49,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:48:49,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:48:49,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025350076] [2024-10-13 12:48:49,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:48:49,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:48:49,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:49,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:48:49,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:48:49,413 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-10-13 12:48:49,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 85 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-10-13 12:48:49,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:49,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-10-13 12:48:49,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:49,630 INFO L124 PetriNetUnfolderBase]: 1403/2357 cut-off events. [2024-10-13 12:48:49,630 INFO L125 PetriNetUnfolderBase]: For 1655/1655 co-relation queries the response was YES. [2024-10-13 12:48:49,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6744 conditions, 2357 events. 1403/2357 cut-off events. For 1655/1655 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12119 event pairs, 385 based on Foata normal form. 3/2347 useless extension candidates. Maximal degree in co-relation 6690. Up to 1753 conditions per place. [2024-10-13 12:48:49,641 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 101 selfloop transitions, 11 changer transitions 1/117 dead transitions. [2024-10-13 12:48:49,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 960 flow [2024-10-13 12:48:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:48:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:48:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-13 12:48:49,643 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-13 12:48:49,643 INFO L175 Difference]: Start difference. First operand has 79 places, 85 transitions, 575 flow. Second operand 3 states and 105 transitions. [2024-10-13 12:48:49,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 960 flow [2024-10-13 12:48:49,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 117 transitions, 860 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-13 12:48:49,649 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 618 flow [2024-10-13 12:48:49,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2024-10-13 12:48:49,650 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2024-10-13 12:48:49,650 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 618 flow [2024-10-13 12:48:49,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-10-13 12:48:49,651 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:49,651 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:49,654 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 [2024-10-13 12:48:49,851 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 [2024-10-13 12:48:49,851 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:49,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash 836159675, now seen corresponding path program 1 times [2024-10-13 12:48:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136973390] [2024-10-13 12:48:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:49,852 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 [2024-10-13 12:48:49,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:49,853 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) [2024-10-13 12:48:49,854 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 [2024-10-13 12:48:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:49,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:48:49,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:49,927 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:48:49,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136973390] [2024-10-13 12:48:49,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136973390] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:48:49,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:48:49,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:48:49,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669892428] [2024-10-13 12:48:49,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:48:49,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:48:49,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:49,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:48:49,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:48:49,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-10-13 12:48:49,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-13 12:48:49,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:49,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-10-13 12:48:49,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:50,277 INFO L124 PetriNetUnfolderBase]: 1357/2295 cut-off events. [2024-10-13 12:48:50,277 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2024-10-13 12:48:50,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 2295 events. 1357/2295 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12451 event pairs, 494 based on Foata normal form. 18/2284 useless extension candidates. Maximal degree in co-relation 6445. Up to 1273 conditions per place. [2024-10-13 12:48:50,290 INFO L140 encePairwiseOnDemand]: 44/48 looper letters, 153 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2024-10-13 12:48:50,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 165 transitions, 1280 flow [2024-10-13 12:48:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:48:50,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:48:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-10-13 12:48:50,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-13 12:48:50,292 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 618 flow. Second operand 4 states and 140 transitions. [2024-10-13 12:48:50,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 165 transitions, 1280 flow [2024-10-13 12:48:50,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 165 transitions, 1255 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:48:50,298 INFO L231 Difference]: Finished difference. Result has 82 places, 96 transitions, 642 flow [2024-10-13 12:48:50,299 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=642, PETRI_PLACES=82, PETRI_TRANSITIONS=96} [2024-10-13 12:48:50,300 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 35 predicate places. [2024-10-13 12:48:50,300 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 96 transitions, 642 flow [2024-10-13 12:48:50,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-13 12:48:50,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:50,300 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:50,305 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 [2024-10-13 12:48:50,501 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 [2024-10-13 12:48:50,501 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:50,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:50,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1395603041, now seen corresponding path program 2 times [2024-10-13 12:48:50,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:50,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277721054] [2024-10-13 12:48:50,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:48:50,502 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 [2024-10-13 12:48:50,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:50,503 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) [2024-10-13 12:48:50,505 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 [2024-10-13 12:48:50,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 12:48:50,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:48:50,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:48:50,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:50,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:50,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:48:50,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:50,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277721054] [2024-10-13 12:48:50,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277721054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:48:50,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:48:50,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:48:50,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107560504] [2024-10-13 12:48:50,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:48:50,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:48:50,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:50,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:48:50,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:48:50,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-10-13 12:48:50,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 96 transitions, 642 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-13 12:48:50,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:50,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-10-13 12:48:50,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:50,826 INFO L124 PetriNetUnfolderBase]: 1387/2349 cut-off events. [2024-10-13 12:48:50,827 INFO L125 PetriNetUnfolderBase]: For 2264/2264 co-relation queries the response was YES. [2024-10-13 12:48:50,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7260 conditions, 2349 events. 1387/2349 cut-off events. For 2264/2264 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12900 event pairs, 497 based on Foata normal form. 24/2344 useless extension candidates. Maximal degree in co-relation 7204. Up to 1273 conditions per place. [2024-10-13 12:48:50,837 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 154 selfloop transitions, 13 changer transitions 0/171 dead transitions. [2024-10-13 12:48:50,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 171 transitions, 1336 flow [2024-10-13 12:48:50,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:48:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:48:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-10-13 12:48:50,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7395833333333334 [2024-10-13 12:48:50,839 INFO L175 Difference]: Start difference. First operand has 82 places, 96 transitions, 642 flow. Second operand 4 states and 142 transitions. [2024-10-13 12:48:50,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 171 transitions, 1336 flow [2024-10-13 12:48:50,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 171 transitions, 1313 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:48:50,848 INFO L231 Difference]: Finished difference. Result has 85 places, 102 transitions, 708 flow [2024-10-13 12:48:50,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=708, PETRI_PLACES=85, PETRI_TRANSITIONS=102} [2024-10-13 12:48:50,848 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 38 predicate places. [2024-10-13 12:48:50,848 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 102 transitions, 708 flow [2024-10-13 12:48:50,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-13 12:48:50,849 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:50,849 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:50,853 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 (15)] Ended with exit code 0 [2024-10-13 12:48:51,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:48:51,050 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:51,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:51,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1092829707, now seen corresponding path program 3 times [2024-10-13 12:48:51,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:51,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888753257] [2024-10-13 12:48:51,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:48:51,051 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 [2024-10-13 12:48:51,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:51,052 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:48:51,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-13 12:48:51,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-13 12:48:51,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:48:51,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-13 12:48:51,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:51,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:51,118 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:48:51,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:51,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888753257] [2024-10-13 12:48:51,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888753257] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:48:51,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:48:51,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:48:51,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28028440] [2024-10-13 12:48:51,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:48:51,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:48:51,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:51,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:48:51,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:48:51,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 48 [2024-10-13 12:48:51,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 102 transitions, 708 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-13 12:48:51,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:51,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 48 [2024-10-13 12:48:51,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:51,389 INFO L124 PetriNetUnfolderBase]: 1410/2414 cut-off events. [2024-10-13 12:48:51,389 INFO L125 PetriNetUnfolderBase]: For 3434/3442 co-relation queries the response was YES. [2024-10-13 12:48:51,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8220 conditions, 2414 events. 1410/2414 cut-off events. For 3434/3442 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13103 event pairs, 441 based on Foata normal form. 32/2439 useless extension candidates. Maximal degree in co-relation 8163. Up to 1464 conditions per place. [2024-10-13 12:48:51,398 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 130 selfloop transitions, 16 changer transitions 0/150 dead transitions. [2024-10-13 12:48:51,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 150 transitions, 1286 flow [2024-10-13 12:48:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:48:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:48:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-13 12:48:51,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6822916666666666 [2024-10-13 12:48:51,400 INFO L175 Difference]: Start difference. First operand has 85 places, 102 transitions, 708 flow. Second operand 4 states and 131 transitions. [2024-10-13 12:48:51,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 150 transitions, 1286 flow [2024-10-13 12:48:51,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 150 transitions, 1260 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 12:48:51,412 INFO L231 Difference]: Finished difference. Result has 90 places, 115 transitions, 901 flow [2024-10-13 12:48:51,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=901, PETRI_PLACES=90, PETRI_TRANSITIONS=115} [2024-10-13 12:48:51,413 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 43 predicate places. [2024-10-13 12:48:51,413 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 115 transitions, 901 flow [2024-10-13 12:48:51,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-10-13 12:48:51,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:51,413 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:51,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-13 12:48:51,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-13 12:48:51,614 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:51,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash -218859294, now seen corresponding path program 1 times [2024-10-13 12:48:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:51,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320724] [2024-10-13 12:48:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:51,615 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 [2024-10-13 12:48:51,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:51,619 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-13 12:48:51,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-13 12:48:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:51,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:48:51,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:51,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:48:51,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:51,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320724] [2024-10-13 12:48:51,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320724] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:48:51,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:48:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:48:51,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751057740] [2024-10-13 12:48:51,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:48:51,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:48:51,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:48:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:48:51,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-10-13 12:48:51,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 115 transitions, 901 flow. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-10-13 12:48:51,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:51,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-10-13 12:48:51,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:52,116 INFO L124 PetriNetUnfolderBase]: 1511/2550 cut-off events. [2024-10-13 12:48:52,116 INFO L125 PetriNetUnfolderBase]: For 3881/3881 co-relation queries the response was YES. [2024-10-13 12:48:52,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9210 conditions, 2550 events. 1511/2550 cut-off events. For 3881/3881 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 14065 event pairs, 520 based on Foata normal form. 9/2559 useless extension candidates. Maximal degree in co-relation 9151. Up to 1399 conditions per place. [2024-10-13 12:48:52,133 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 166 selfloop transitions, 17 changer transitions 0/186 dead transitions. [2024-10-13 12:48:52,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 186 transitions, 1594 flow [2024-10-13 12:48:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:48:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:48:52,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-10-13 12:48:52,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-10-13 12:48:52,135 INFO L175 Difference]: Start difference. First operand has 90 places, 115 transitions, 901 flow. Second operand 5 states and 161 transitions. [2024-10-13 12:48:52,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 186 transitions, 1594 flow [2024-10-13 12:48:52,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 186 transitions, 1594 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 12:48:52,150 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 954 flow [2024-10-13 12:48:52,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=901, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=954, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2024-10-13 12:48:52,151 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 49 predicate places. [2024-10-13 12:48:52,152 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 954 flow [2024-10-13 12:48:52,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 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) [2024-10-13 12:48:52,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:52,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:52,157 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 (17)] Ended with exit code 0 [2024-10-13 12:48:52,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2024-10-13 12:48:52,353 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:52,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:52,353 INFO L85 PathProgramCache]: Analyzing trace with hash 37527654, now seen corresponding path program 2 times [2024-10-13 12:48:52,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:52,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280123038] [2024-10-13 12:48:52,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:48:52,354 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 [2024-10-13 12:48:52,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:52,355 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2024-10-13 12:48:52,356 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 (18)] Waiting until timeout for monitored process [2024-10-13 12:48:52,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 12:48:52,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:48:52,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 12:48:52,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:52,440 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 12:48:52,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280123038] [2024-10-13 12:48:52,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280123038] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:48:52,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:48:52,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:48:52,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286939812] [2024-10-13 12:48:52,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:48:52,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:48:52,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:52,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:48:52,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:48:52,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-13 12:48:52,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 954 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:52,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:52,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-13 12:48:52,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:52,750 INFO L124 PetriNetUnfolderBase]: 1424/2398 cut-off events. [2024-10-13 12:48:52,750 INFO L125 PetriNetUnfolderBase]: For 8575/8575 co-relation queries the response was YES. [2024-10-13 12:48:52,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9385 conditions, 2398 events. 1424/2398 cut-off events. For 8575/8575 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12175 event pairs, 636 based on Foata normal form. 96/2494 useless extension candidates. Maximal degree in co-relation 9323. Up to 1672 conditions per place. [2024-10-13 12:48:52,762 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 166 selfloop transitions, 15 changer transitions 2/185 dead transitions. [2024-10-13 12:48:52,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 185 transitions, 1903 flow [2024-10-13 12:48:52,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:48:52,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:48:52,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-10-13 12:48:52,764 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-10-13 12:48:52,764 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 954 flow. Second operand 5 states and 145 transitions. [2024-10-13 12:48:52,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 185 transitions, 1903 flow [2024-10-13 12:48:52,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 185 transitions, 1819 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-10-13 12:48:52,777 INFO L231 Difference]: Finished difference. Result has 101 places, 112 transitions, 898 flow [2024-10-13 12:48:52,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=898, PETRI_PLACES=101, PETRI_TRANSITIONS=112} [2024-10-13 12:48:52,778 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 54 predicate places. [2024-10-13 12:48:52,778 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 112 transitions, 898 flow [2024-10-13 12:48:52,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 12:48:52,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:52,778 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:52,782 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 (18)] Ended with exit code 0 [2024-10-13 12:48:52,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2024-10-13 12:48:52,979 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:52,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:52,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1634126432, now seen corresponding path program 1 times [2024-10-13 12:48:52,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:52,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690071028] [2024-10-13 12:48:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:48:52,980 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 [2024-10-13 12:48:52,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:52,981 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2024-10-13 12:48:52,982 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 (19)] Waiting until timeout for monitored process [2024-10-13 12:48:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:48:53,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:48:53,045 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:53,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:48:53,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:53,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:53,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690071028] [2024-10-13 12:48:53,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690071028] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:48:53,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:48:53,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-10-13 12:48:53,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696512152] [2024-10-13 12:48:53,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:48:53,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:48:53,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:53,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:48:53,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:48:53,424 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-13 12:48:53,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 112 transitions, 898 flow. Second operand has 14 states, 14 states have (on average 20.428571428571427) internal successors, (286), 14 states have internal predecessors, (286), 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) [2024-10-13 12:48:53,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:53,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-13 12:48:53,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:48:59,144 INFO L124 PetriNetUnfolderBase]: 3785/6883 cut-off events. [2024-10-13 12:48:59,144 INFO L125 PetriNetUnfolderBase]: For 13852/13852 co-relation queries the response was YES. [2024-10-13 12:48:59,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24628 conditions, 6883 events. 3785/6883 cut-off events. For 13852/13852 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 48295 event pairs, 519 based on Foata normal form. 36/6919 useless extension candidates. Maximal degree in co-relation 24563. Up to 1294 conditions per place. [2024-10-13 12:48:59,180 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 431 selfloop transitions, 277 changer transitions 6/716 dead transitions. [2024-10-13 12:48:59,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 716 transitions, 5653 flow [2024-10-13 12:48:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-13 12:48:59,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-10-13 12:48:59,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 1163 transitions. [2024-10-13 12:48:59,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5506628787878788 [2024-10-13 12:48:59,185 INFO L175 Difference]: Start difference. First operand has 101 places, 112 transitions, 898 flow. Second operand 44 states and 1163 transitions. [2024-10-13 12:48:59,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 716 transitions, 5653 flow [2024-10-13 12:48:59,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 716 transitions, 5550 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-10-13 12:48:59,235 INFO L231 Difference]: Finished difference. Result has 160 places, 412 transitions, 3728 flow [2024-10-13 12:48:59,235 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=3728, PETRI_PLACES=160, PETRI_TRANSITIONS=412} [2024-10-13 12:48:59,236 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 113 predicate places. [2024-10-13 12:48:59,236 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 412 transitions, 3728 flow [2024-10-13 12:48:59,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.428571428571427) internal successors, (286), 14 states have internal predecessors, (286), 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) [2024-10-13 12:48:59,237 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:48:59,237 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:48:59,243 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 (19)] Ended with exit code 0 [2024-10-13 12:48:59,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2024-10-13 12:48:59,438 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:48:59,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:48:59,439 INFO L85 PathProgramCache]: Analyzing trace with hash 2099102440, now seen corresponding path program 2 times [2024-10-13 12:48:59,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:48:59,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704951574] [2024-10-13 12:48:59,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:48:59,440 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 [2024-10-13 12:48:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:48:59,443 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2024-10-13 12:48:59,444 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 (20)] Waiting until timeout for monitored process [2024-10-13 12:48:59,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:48:59,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:48:59,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:48:59,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:48:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:59,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:48:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:48:59,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:48:59,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704951574] [2024-10-13 12:48:59,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704951574] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:48:59,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:48:59,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2024-10-13 12:48:59,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251281901] [2024-10-13 12:48:59,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:48:59,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:48:59,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:48:59,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:48:59,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:48:59,789 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-13 12:48:59,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 412 transitions, 3728 flow. Second operand has 15 states, 15 states have (on average 20.266666666666666) internal successors, (304), 15 states have internal predecessors, (304), 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) [2024-10-13 12:48:59,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:48:59,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-13 12:48:59,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:49:03,248 INFO L124 PetriNetUnfolderBase]: 7832/13990 cut-off events. [2024-10-13 12:49:03,248 INFO L125 PetriNetUnfolderBase]: For 66586/66586 co-relation queries the response was YES. [2024-10-13 12:49:03,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63600 conditions, 13990 events. 7832/13990 cut-off events. For 66586/66586 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 103569 event pairs, 489 based on Foata normal form. 174/14164 useless extension candidates. Maximal degree in co-relation 63518. Up to 2442 conditions per place. [2024-10-13 12:49:03,342 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 656 selfloop transitions, 846 changer transitions 4/1508 dead transitions. [2024-10-13 12:49:03,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1508 transitions, 16465 flow [2024-10-13 12:49:03,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-13 12:49:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-10-13 12:49:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1099 transitions. [2024-10-13 12:49:03,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5451388888888888 [2024-10-13 12:49:03,345 INFO L175 Difference]: Start difference. First operand has 160 places, 412 transitions, 3728 flow. Second operand 42 states and 1099 transitions. [2024-10-13 12:49:03,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1508 transitions, 16465 flow [2024-10-13 12:49:03,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 1508 transitions, 15851 flow, removed 307 selfloop flow, removed 0 redundant places. [2024-10-13 12:49:03,698 INFO L231 Difference]: Finished difference. Result has 226 places, 1127 transitions, 12969 flow [2024-10-13 12:49:03,699 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=265, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=12969, PETRI_PLACES=226, PETRI_TRANSITIONS=1127} [2024-10-13 12:49:03,699 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 179 predicate places. [2024-10-13 12:49:03,699 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 1127 transitions, 12969 flow [2024-10-13 12:49:03,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.266666666666666) internal successors, (304), 15 states have internal predecessors, (304), 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) [2024-10-13 12:49:03,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:49:03,699 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:49:03,703 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 (20)] Ended with exit code 0 [2024-10-13 12:49:03,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2024-10-13 12:49:03,900 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:49:03,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:49:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash -91076439, now seen corresponding path program 1 times [2024-10-13 12:49:03,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:49:03,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727448575] [2024-10-13 12:49:03,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:49:03,901 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 [2024-10-13 12:49:03,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:49:03,902 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2024-10-13 12:49:03,903 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 (21)] Waiting until timeout for monitored process [2024-10-13 12:49:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:49:03,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:49:03,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:49:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:49:04,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:49:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:49:04,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:49:04,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727448575] [2024-10-13 12:49:04,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727448575] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:49:04,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:49:04,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-10-13 12:49:04,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796896633] [2024-10-13 12:49:04,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:49:04,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:49:04,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:49:04,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:49:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:49:04,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 48 [2024-10-13 12:49:04,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 1127 transitions, 12969 flow. Second operand has 14 states, 14 states have (on average 21.5) internal successors, (301), 14 states have internal predecessors, (301), 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) [2024-10-13 12:49:04,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:49:04,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 48 [2024-10-13 12:49:04,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:49:10,097 INFO L124 PetriNetUnfolderBase]: 10391/19155 cut-off events. [2024-10-13 12:49:10,097 INFO L125 PetriNetUnfolderBase]: For 185315/185425 co-relation queries the response was YES. [2024-10-13 12:49:10,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106148 conditions, 19155 events. 10391/19155 cut-off events. For 185315/185425 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 156041 event pairs, 843 based on Foata normal form. 250/19405 useless extension candidates. Maximal degree in co-relation 106041. Up to 3296 conditions per place. [2024-10-13 12:49:10,282 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 1216 selfloop transitions, 852 changer transitions 5/2076 dead transitions. [2024-10-13 12:49:10,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 2076 transitions, 26955 flow [2024-10-13 12:49:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-13 12:49:10,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-13 12:49:10,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 815 transitions. [2024-10-13 12:49:10,284 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5854885057471264 [2024-10-13 12:49:10,284 INFO L175 Difference]: Start difference. First operand has 226 places, 1127 transitions, 12969 flow. Second operand 29 states and 815 transitions. [2024-10-13 12:49:10,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 2076 transitions, 26955 flow [2024-10-13 12:49:11,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 2076 transitions, 25518 flow, removed 614 selfloop flow, removed 3 redundant places. [2024-10-13 12:49:11,765 INFO L231 Difference]: Finished difference. Result has 268 places, 1495 transitions, 19371 flow [2024-10-13 12:49:11,766 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=12126, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19371, PETRI_PLACES=268, PETRI_TRANSITIONS=1495} [2024-10-13 12:49:11,766 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 221 predicate places. [2024-10-13 12:49:11,766 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 1495 transitions, 19371 flow [2024-10-13 12:49:11,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.5) internal successors, (301), 14 states have internal predecessors, (301), 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) [2024-10-13 12:49:11,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:49:11,767 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:49:11,772 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 (21)] Forceful destruction successful, exit code 0 [2024-10-13 12:49:11,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2024-10-13 12:49:11,967 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:49:11,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:49:11,968 INFO L85 PathProgramCache]: Analyzing trace with hash 44829477, now seen corresponding path program 2 times [2024-10-13 12:49:11,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:49:11,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719368131] [2024-10-13 12:49:11,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:49:11,968 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 [2024-10-13 12:49:11,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:49:11,972 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2024-10-13 12:49:11,973 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 (22)] Waiting until timeout for monitored process [2024-10-13 12:49:12,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:49:12,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:49:12,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-13 12:49:12,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:49:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:49:12,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:49:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:49:12,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:49:12,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719368131] [2024-10-13 12:49:12,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719368131] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:49:12,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:49:12,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-10-13 12:49:12,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118679326] [2024-10-13 12:49:12,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:49:12,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:49:12,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:49:12,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:49:12,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:49:12,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-13 12:49:12,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 1495 transitions, 19371 flow. Second operand has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 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) [2024-10-13 12:49:12,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:49:12,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-13 12:49:12,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:49:20,071 INFO L124 PetriNetUnfolderBase]: 11672/21568 cut-off events. [2024-10-13 12:49:20,071 INFO L125 PetriNetUnfolderBase]: For 291670/291670 co-relation queries the response was YES. [2024-10-13 12:49:20,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131272 conditions, 21568 events. 11672/21568 cut-off events. For 291670/291670 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 178334 event pairs, 1316 based on Foata normal form. 672/22240 useless extension candidates. Maximal degree in co-relation 131147. Up to 3867 conditions per place. [2024-10-13 12:49:20,376 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 1246 selfloop transitions, 1058 changer transitions 1/2307 dead transitions. [2024-10-13 12:49:20,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 2307 transitions, 33497 flow [2024-10-13 12:49:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-13 12:49:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-10-13 12:49:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 663 transitions. [2024-10-13 12:49:20,378 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6005434782608695 [2024-10-13 12:49:20,378 INFO L175 Difference]: Start difference. First operand has 268 places, 1495 transitions, 19371 flow. Second operand 23 states and 663 transitions. [2024-10-13 12:49:20,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 2307 transitions, 33497 flow [2024-10-13 12:49:24,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 2307 transitions, 31195 flow, removed 595 selfloop flow, removed 13 redundant places. [2024-10-13 12:49:24,872 INFO L231 Difference]: Finished difference. Result has 284 places, 1863 transitions, 25561 flow [2024-10-13 12:49:24,872 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=16836, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=697, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=25561, PETRI_PLACES=284, PETRI_TRANSITIONS=1863} [2024-10-13 12:49:24,873 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 237 predicate places. [2024-10-13 12:49:24,873 INFO L471 AbstractCegarLoop]: Abstraction has has 284 places, 1863 transitions, 25561 flow [2024-10-13 12:49:24,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 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) [2024-10-13 12:49:24,873 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:49:24,873 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:49:24,876 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 (22)] Forceful destruction successful, exit code 0 [2024-10-13 12:49:25,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2024-10-13 12:49:25,074 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:49:25,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:49:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1836397908, now seen corresponding path program 3 times [2024-10-13 12:49:25,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:49:25,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885916871] [2024-10-13 12:49:25,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:49:25,075 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 [2024-10-13 12:49:25,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:49:25,076 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2024-10-13 12:49:25,078 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 (23)] Waiting until timeout for monitored process [2024-10-13 12:49:25,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:49:25,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:49:25,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:49:25,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:49:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:49:25,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:49:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:49:25,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:49:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885916871] [2024-10-13 12:49:25,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885916871] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:49:25,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:49:25,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2024-10-13 12:49:25,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029185388] [2024-10-13 12:49:25,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:49:25,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:49:25,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:49:25,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:49:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:49:25,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-10-13 12:49:25,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 1863 transitions, 25561 flow. Second operand has 15 states, 15 states have (on average 20.266666666666666) internal successors, (304), 15 states have internal predecessors, (304), 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) [2024-10-13 12:49:25,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:49:25,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-10-13 12:49:25,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:49:37,061 INFO L124 PetriNetUnfolderBase]: 13910/25645 cut-off events. [2024-10-13 12:49:37,061 INFO L125 PetriNetUnfolderBase]: For 276419/276419 co-relation queries the response was YES. [2024-10-13 12:49:37,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155301 conditions, 25645 events. 13910/25645 cut-off events. For 276419/276419 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 217512 event pairs, 1701 based on Foata normal form. 57/25702 useless extension candidates. Maximal degree in co-relation 155171. Up to 4584 conditions per place. [2024-10-13 12:49:37,494 INFO L140 encePairwiseOnDemand]: 32/48 looper letters, 1909 selfloop transitions, 1367 changer transitions 6/3284 dead transitions. [2024-10-13 12:49:37,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 3284 transitions, 52818 flow [2024-10-13 12:49:37,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-13 12:49:37,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-10-13 12:49:37,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 1079 transitions. [2024-10-13 12:49:37,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5619791666666667 [2024-10-13 12:49:37,497 INFO L175 Difference]: Start difference. First operand has 284 places, 1863 transitions, 25561 flow. Second operand 40 states and 1079 transitions. [2024-10-13 12:49:37,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 3284 transitions, 52818 flow [2024-10-13 12:49:42,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 3284 transitions, 50397 flow, removed 1063 selfloop flow, removed 1 redundant places. [2024-10-13 12:49:42,888 INFO L231 Difference]: Finished difference. Result has 342 places, 2485 transitions, 37970 flow [2024-10-13 12:49:42,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=24492, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=811, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=966, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=37970, PETRI_PLACES=342, PETRI_TRANSITIONS=2485} [2024-10-13 12:49:42,890 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 295 predicate places. [2024-10-13 12:49:42,891 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 2485 transitions, 37970 flow [2024-10-13 12:49:42,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.266666666666666) internal successors, (304), 15 states have internal predecessors, (304), 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) [2024-10-13 12:49:42,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:49:42,891 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:49:42,896 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 (23)] Ended with exit code 0 [2024-10-13 12:49:43,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2024-10-13 12:49:43,092 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-13 12:49:43,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:49:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash 52977439, now seen corresponding path program 3 times [2024-10-13 12:49:43,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-13 12:49:43,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838553220] [2024-10-13 12:49:43,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:49:43,093 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 [2024-10-13 12:49:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-13 12:49:43,094 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2024-10-13 12:49:43,095 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 (24)] Waiting until timeout for monitored process [2024-10-13 12:49:43,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:49:43,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:49:43,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 12:49:43,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:49:43,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:49:43,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:49:43,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:49:43,384 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-13 12:49:43,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:49:43,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:49:43,387 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-13 12:49:43,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:49:43,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:49:43,391 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-13 12:49:43,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-13 12:49:43,393 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-13 12:49:43,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 12:49:43,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 65 treesize of output 31 [2024-10-13 12:49:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:49:43,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:49:44,733 INFO L349 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2024-10-13 12:49:44,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 85 treesize of output 23 [2024-10-13 12:49:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:49:45,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-13 12:49:45,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838553220] [2024-10-13 12:49:45,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838553220] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:49:45,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-13 12:49:45,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2024-10-13 12:49:45,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663298142] [2024-10-13 12:49:45,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-13 12:49:45,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:49:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-13 12:49:45,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:49:45,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182