./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/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:47:41,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:47:41,979 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:47:41,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:47:41,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:47:42,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:47:42,016 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:47:42,016 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:47:42,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:47:42,018 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:47:42,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:47:42,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:47:42,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:47:42,020 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:47:42,020 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:47:42,021 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:47:42,021 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:47:42,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:47:42,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:47:42,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:47:42,022 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:47:42,024 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:47:42,024 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:47:42,025 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:47:42,025 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:47:42,025 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:47:42,025 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:47:42,025 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:47:42,025 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:47:42,026 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:47:42,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:47:42,026 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:47:42,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:47:42,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:47:42,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:47:42,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:47:42,027 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:47:42,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:47:42,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:47:42,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:47:42,027 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:47:42,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:47:42,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2024-10-14 19:47:42,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:47:42,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:47:42,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:47:42,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:47:42,240 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:47:42,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-10-14 19:47:43,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:47:43,615 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:47:43,616 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-10-14 19:47:43,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c61c0f07/c14e41f965ac43b1b4e4ab9b7a8e09ec/FLAG5f8fcc1d6 [2024-10-14 19:47:43,634 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c61c0f07/c14e41f965ac43b1b4e4ab9b7a8e09ec [2024-10-14 19:47:43,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:47:43,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:47:43,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:47:43,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:47:43,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:47:43,643 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:43" (1/1) ... [2024-10-14 19:47:43,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55cb08f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:43, skipping insertion in model container [2024-10-14 19:47:43,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:43" (1/1) ... [2024-10-14 19:47:43,664 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:47:43,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:47:43,809 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-14 19:47:43,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b5af8e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:43, skipping insertion in model container [2024-10-14 19:47:43,810 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:47:43,810 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:47:43,812 INFO L158 Benchmark]: Toolchain (without parser) took 174.09ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 100.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:47:43,813 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:47:43,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.80ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 100.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-14 19:47:43,814 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 167.8MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.80ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 100.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 102]: 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/chl-chromosome-opt-symm.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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:47:45,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:47:45,369 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:47:45,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:47:45,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:47:45,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:47:45,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:47:45,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:47:45,395 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:47:45,398 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:47:45,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:47:45,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:47:45,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:47:45,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:47:45,399 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:47:45,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:47:45,399 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:47:45,399 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:47:45,399 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:47:45,400 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:47:45,400 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:47:45,401 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:47:45,401 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:47:45,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:47:45,402 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:47:45,402 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:47:45,402 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:47:45,402 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:47:45,402 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:47:45,402 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:47:45,403 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:47:45,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:47:45,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:47:45,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:47:45,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:47:45,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:47:45,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:47:45,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:47:45,409 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:47:45,409 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:47:45,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:47:45,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:47:45,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:47:45,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:47:45,410 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:47:45,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2024-10-14 19:47:45,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:47:45,641 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:47:45,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:47:45,644 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:47:45,645 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:47:45,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-10-14 19:47:46,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:47:47,029 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:47:47,029 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2024-10-14 19:47:47,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c432aa68c/642a78f891fa422ea4f11987a02ddc0f/FLAG7224b8165 [2024-10-14 19:47:47,045 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c432aa68c/642a78f891fa422ea4f11987a02ddc0f [2024-10-14 19:47:47,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:47:47,048 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:47:47,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:47:47,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:47:47,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:47:47,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722b7451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47, skipping insertion in model container [2024-10-14 19:47:47,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,070 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:47:47,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:47:47,260 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:47:47,263 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:47:47,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:47:47,289 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:47:47,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:47:47,333 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:47:47,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47 WrapperNode [2024-10-14 19:47:47,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:47:47,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:47:47,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:47:47,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:47:47,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,374 INFO L138 Inliner]: procedures = 25, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 167 [2024-10-14 19:47:47,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:47:47,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:47:47,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:47:47,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:47:47,384 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,391 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,410 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-14 19:47:47,411 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,411 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:47:47,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:47:47,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:47:47,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:47:47,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (1/1) ... [2024-10-14 19:47:47,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:47:47,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:47:47,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:47:47,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:47:47,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:47:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:47:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:47:47,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:47:47,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:47:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:47:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:47:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:47:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:47:47,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:47:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:47:47,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:47:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:47:47,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:47:47,510 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:47:47,598 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:47:47,600 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:47:47,975 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:47:47,975 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:47:48,130 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:47:48,131 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-14 19:47:48,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:47:48 BoogieIcfgContainer [2024-10-14 19:47:48,132 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:47:48,134 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:47:48,134 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:47:48,137 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:47:48,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:47:47" (1/3) ... [2024-10-14 19:47:48,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43544266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:47:48, skipping insertion in model container [2024-10-14 19:47:48,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:47" (2/3) ... [2024-10-14 19:47:48,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43544266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:47:48, skipping insertion in model container [2024-10-14 19:47:48,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:47:48" (3/3) ... [2024-10-14 19:47:48,141 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2024-10-14 19:47:48,153 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:47:48,154 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-14 19:47:48,154 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:47:48,208 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-14 19:47:48,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 66 transitions, 146 flow [2024-10-14 19:47:48,262 INFO L124 PetriNetUnfolderBase]: 8/64 cut-off events. [2024-10-14 19:47:48,263 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:47:48,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 8/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 191 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2024-10-14 19:47:48,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 66 transitions, 146 flow [2024-10-14 19:47:48,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 63 transitions, 138 flow [2024-10-14 19:47:48,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:47:48,285 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;@62af31d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:47:48,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2024-10-14 19:47:48,293 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:47:48,293 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:47:48,293 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:47:48,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:48,294 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:47:48,294 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:47:48,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:48,298 INFO L85 PathProgramCache]: Analyzing trace with hash 525148, now seen corresponding path program 1 times [2024-10-14 19:47:48,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:48,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053790930] [2024-10-14 19:47:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:48,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:47:48,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:48,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:47:48,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:47:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:48,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:47:48,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:48,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:47:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:48,442 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:47:48,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053790930] [2024-10-14 19:47:48,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053790930] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:48,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:48,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:47:48,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824244186] [2024-10-14 19:47:48,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:48,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:47:48,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:48,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:47:48,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:47:48,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2024-10-14 19:47:48,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:48,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:48,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2024-10-14 19:47:48,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:48,706 INFO L124 PetriNetUnfolderBase]: 183/426 cut-off events. [2024-10-14 19:47:48,706 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-14 19:47:48,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 426 events. 183/426 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2137 event pairs, 100 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 667. Up to 275 conditions per place. [2024-10-14 19:47:48,710 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 28 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-10-14 19:47:48,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 190 flow [2024-10-14 19:47:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:47:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:47:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-10-14 19:47:48,722 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-10-14 19:47:48,723 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 138 flow. Second operand 3 states and 129 transitions. [2024-10-14 19:47:48,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 190 flow [2024-10-14 19:47:48,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:47:48,729 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 126 flow [2024-10-14 19:47:48,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2024-10-14 19:47:48,733 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2024-10-14 19:47:48,734 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 126 flow [2024-10-14 19:47:48,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:48,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:48,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:47:48,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-14 19:47:48,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:47:48,935 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:47:48,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:48,936 INFO L85 PathProgramCache]: Analyzing trace with hash 525149, now seen corresponding path program 1 times [2024-10-14 19:47:48,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:48,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298240590] [2024-10-14 19:47:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:48,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:47:48,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:48,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:47:48,940 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 (3)] Waiting until timeout for monitored process [2024-10-14 19:47:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:48,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-14 19:47:48,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:49,000 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 5 [2024-10-14 19:47:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:49,020 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:47:49,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:49,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298240590] [2024-10-14 19:47:49,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298240590] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:49,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:49,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:47:49,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606675441] [2024-10-14 19:47:49,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:49,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:47:49,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:49,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:47:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:47:49,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2024-10-14 19:47:49,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:49,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:49,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2024-10-14 19:47:49,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:49,226 INFO L124 PetriNetUnfolderBase]: 185/432 cut-off events. [2024-10-14 19:47:49,227 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-14 19:47:49,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 432 events. 185/432 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2148 event pairs, 100 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 697. Up to 284 conditions per place. [2024-10-14 19:47:49,232 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 33 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-10-14 19:47:49,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 216 flow [2024-10-14 19:47:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:47:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:47:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-10-14 19:47:49,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6868686868686869 [2024-10-14 19:47:49,234 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 126 flow. Second operand 3 states and 136 transitions. [2024-10-14 19:47:49,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 216 flow [2024-10-14 19:47:49,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 65 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:47:49,236 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 162 flow [2024-10-14 19:47:49,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2024-10-14 19:47:49,237 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2024-10-14 19:47:49,237 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 162 flow [2024-10-14 19:47:49,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:49,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:49,238 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:47:49,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-14 19:47:49,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:47:49,440 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:47:49,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:49,441 INFO L85 PathProgramCache]: Analyzing trace with hash 504684969, now seen corresponding path program 1 times [2024-10-14 19:47:49,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:49,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075487234] [2024-10-14 19:47:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:49,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:47:49,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:49,444 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:47:49,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:47:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:49,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:47:49,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:49,510 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 5 [2024-10-14 19:47:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:49,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:47:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:49,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:49,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075487234] [2024-10-14 19:47:49,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075487234] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:47:49,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:47:49,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2024-10-14 19:47:49,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045306691] [2024-10-14 19:47:49,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:47:49,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:47:49,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:49,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:47:49,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:47:49,944 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2024-10-14 19:47:49,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:49,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:49,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2024-10-14 19:47:49,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:50,449 INFO L124 PetriNetUnfolderBase]: 191/450 cut-off events. [2024-10-14 19:47:50,449 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 19:47:50,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 450 events. 191/450 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2293 event pairs, 100 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 697. Up to 287 conditions per place. [2024-10-14 19:47:50,454 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 39 selfloop transitions, 17 changer transitions 0/83 dead transitions. [2024-10-14 19:47:50,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 344 flow [2024-10-14 19:47:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:47:50,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:47:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 254 transitions. [2024-10-14 19:47:50,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-10-14 19:47:50,458 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 162 flow. Second operand 6 states and 254 transitions. [2024-10-14 19:47:50,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 344 flow [2024-10-14 19:47:50,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 83 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:47:50,460 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 270 flow [2024-10-14 19:47:50,461 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2024-10-14 19:47:50,461 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-10-14 19:47:50,461 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 270 flow [2024-10-14 19:47:50,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:50,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:50,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:47:50,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-14 19:47:50,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:47:50,664 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:47:50,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:50,665 INFO L85 PathProgramCache]: Analyzing trace with hash -305075123, now seen corresponding path program 1 times [2024-10-14 19:47:50,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:50,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332734771] [2024-10-14 19:47:50,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:50,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:47:50,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:50,667 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:47:50,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 19:47:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:50,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:47:50,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:50,719 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:47:50,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:50,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332734771] [2024-10-14 19:47:50,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332734771] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:50,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:50,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:47:50,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190413823] [2024-10-14 19:47:50,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:50,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:47:50,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:50,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:47:50,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:47:50,728 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2024-10-14 19:47:50,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:50,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:50,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2024-10-14 19:47:50,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:50,807 INFO L124 PetriNetUnfolderBase]: 189/448 cut-off events. [2024-10-14 19:47:50,807 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-10-14 19:47:50,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822 conditions, 448 events. 189/448 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2224 event pairs, 100 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 751. Up to 296 conditions per place. [2024-10-14 19:47:50,809 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 39 selfloop transitions, 7 changer transitions 0/75 dead transitions. [2024-10-14 19:47:50,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 356 flow [2024-10-14 19:47:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:47:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:47:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-10-14 19:47:50,810 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2024-10-14 19:47:50,810 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 270 flow. Second operand 3 states and 138 transitions. [2024-10-14 19:47:50,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 356 flow [2024-10-14 19:47:50,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 75 transitions, 331 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-10-14 19:47:50,817 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 249 flow [2024-10-14 19:47:50,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=249, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2024-10-14 19:47:50,818 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2024-10-14 19:47:50,818 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 249 flow [2024-10-14 19:47:50,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:50,818 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:50,818 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-14 19:47:50,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-14 19:47:51,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:47:51,021 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:47:51,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:51,021 INFO L85 PathProgramCache]: Analyzing trace with hash 566766221, now seen corresponding path program 2 times [2024-10-14 19:47:51,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:47:51,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030329849] [2024-10-14 19:47:51,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:47:51,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:47:51,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:47:51,023 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:47:51,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:47:51,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:47:51,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:47:51,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:47:51,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:51,131 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 5 [2024-10-14 19:47:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:51,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:47:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:51,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:47:51,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030329849] [2024-10-14 19:47:51,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030329849] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:47:51,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:47:51,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-14 19:47:51,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936249436] [2024-10-14 19:47:51,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:47:51,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 19:47:51,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:47:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 19:47:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-10-14 19:47:53,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2024-10-14 19:47:53,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 249 flow. Second operand has 14 states, 14 states have (on average 33.57142857142857) internal successors, (470), 14 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:47:53,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:53,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2024-10-14 19:47:53,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:57,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:48:00,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 19:48:02,389 INFO L124 PetriNetUnfolderBase]: 193/476 cut-off events. [2024-10-14 19:48:02,389 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-10-14 19:48:02,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 476 events. 193/476 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2270 event pairs, 100 based on Foata normal form. 20/374 useless extension candidates. Maximal degree in co-relation 787. Up to 288 conditions per place. [2024-10-14 19:48:02,391 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 40 selfloop transitions, 42 changer transitions 0/109 dead transitions. [2024-10-14 19:48:02,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 109 transitions, 551 flow [2024-10-14 19:48:02,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-14 19:48:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-14 19:48:02,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 646 transitions. [2024-10-14 19:48:02,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-10-14 19:48:02,395 INFO L175 Difference]: Start difference. First operand has 65 places, 73 transitions, 249 flow. Second operand 17 states and 646 transitions. [2024-10-14 19:48:02,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 109 transitions, 551 flow [2024-10-14 19:48:02,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 109 transitions, 533 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:48:02,398 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 537 flow [2024-10-14 19:48:02,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=537, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2024-10-14 19:48:02,399 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 28 predicate places. [2024-10-14 19:48:02,399 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 537 flow [2024-10-14 19:48:02,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 33.57142857142857) internal successors, (470), 14 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:02,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:02,399 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-14 19:48:02,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-14 19:48:02,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:02,600 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:02,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2035594411, now seen corresponding path program 3 times [2024-10-14 19:48:02,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:02,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596158119] [2024-10-14 19:48:02,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:48:02,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:02,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:02,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:02,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:48:02,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-14 19:48:02,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:48:02,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 19:48:02,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:02,767 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 5 [2024-10-14 19:48:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:03,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:04,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:04,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596158119] [2024-10-14 19:48:04,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596158119] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:04,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:04,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-14 19:48:04,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528440262] [2024-10-14 19:48:04,344 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:04,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 19:48:04,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:04,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 19:48:04,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2024-10-14 19:48:10,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2024-10-14 19:48:10,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 99 transitions, 537 flow. Second operand has 25 states, 25 states have (on average 33.84) internal successors, (846), 25 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:10,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:10,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2024-10-14 19:48:10,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:11,437 INFO L124 PetriNetUnfolderBase]: 181/440 cut-off events. [2024-10-14 19:48:11,437 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2024-10-14 19:48:11,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 440 events. 181/440 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2119 event pairs, 100 based on Foata normal form. 2/320 useless extension candidates. Maximal degree in co-relation 834. Up to 275 conditions per place. [2024-10-14 19:48:11,447 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 33 selfloop transitions, 13 changer transitions 0/73 dead transitions. [2024-10-14 19:48:11,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 73 transitions, 424 flow [2024-10-14 19:48:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:48:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:48:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 304 transitions. [2024-10-14 19:48:11,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-10-14 19:48:11,449 INFO L175 Difference]: Start difference. First operand has 90 places, 99 transitions, 537 flow. Second operand 8 states and 304 transitions. [2024-10-14 19:48:11,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 73 transitions, 424 flow [2024-10-14 19:48:11,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 290 flow, removed 46 selfloop flow, removed 15 redundant places. [2024-10-14 19:48:11,451 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 192 flow [2024-10-14 19:48:11,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=192, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-10-14 19:48:11,452 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2024-10-14 19:48:11,452 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 192 flow [2024-10-14 19:48:11,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 33.84) internal successors, (846), 25 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:11,452 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:11,452 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:11,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-14 19:48:11,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:11,653 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:11,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:11,653 INFO L85 PathProgramCache]: Analyzing trace with hash 32884113, now seen corresponding path program 1 times [2024-10-14 19:48:11,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:11,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335685575] [2024-10-14 19:48:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:11,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:11,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:11,655 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:11,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-14 19:48:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:11,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:48:11,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:11,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:48:11,807 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-14 19:48:11,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-14 19:48:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:11,904 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:11,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:11,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335685575] [2024-10-14 19:48:11,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335685575] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:11,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:11,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:48:11,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917116202] [2024-10-14 19:48:11,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:11,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:11,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:11,995 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2024-10-14 19:48:11,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:11,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:11,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2024-10-14 19:48:11,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:12,131 INFO L124 PetriNetUnfolderBase]: 258/568 cut-off events. [2024-10-14 19:48:12,133 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-14 19:48:12,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 568 events. 258/568 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2893 event pairs, 159 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 1032. Up to 396 conditions per place. [2024-10-14 19:48:12,136 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 38 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-10-14 19:48:12,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 61 transitions, 266 flow [2024-10-14 19:48:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:12,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:12,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-10-14 19:48:12,137 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2024-10-14 19:48:12,137 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 192 flow. Second operand 5 states and 162 transitions. [2024-10-14 19:48:12,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 61 transitions, 266 flow [2024-10-14 19:48:12,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 240 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-14 19:48:12,139 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 164 flow [2024-10-14 19:48:12,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-10-14 19:48:12,139 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-10-14 19:48:12,139 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 164 flow [2024-10-14 19:48:12,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:12,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:12,140 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:12,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-10-14 19:48:12,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:12,345 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:12,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:12,345 INFO L85 PathProgramCache]: Analyzing trace with hash 32884114, now seen corresponding path program 1 times [2024-10-14 19:48:12,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:12,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82560581] [2024-10-14 19:48:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:12,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:12,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:12,348 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:12,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-14 19:48:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:12,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:48:12,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:12,499 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 5 [2024-10-14 19:48:12,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:48:12,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:48:12,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-14 19:48:12,584 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:48:12,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:48:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:12,653 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:12,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82560581] [2024-10-14 19:48:12,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82560581] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:12,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:12,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:48:12,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582505515] [2024-10-14 19:48:12,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:12,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:48:12,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:12,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:48:12,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:48:12,796 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 66 [2024-10-14 19:48:12,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:12,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:12,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 66 [2024-10-14 19:48:12,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:12,944 INFO L124 PetriNetUnfolderBase]: 385/835 cut-off events. [2024-10-14 19:48:12,944 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-14 19:48:12,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 835 events. 385/835 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4336 event pairs, 137 based on Foata normal form. 28/667 useless extension candidates. Maximal degree in co-relation 1482. Up to 350 conditions per place. [2024-10-14 19:48:12,948 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 56 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2024-10-14 19:48:12,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 82 transitions, 331 flow [2024-10-14 19:48:12,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:48:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:48:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-10-14 19:48:12,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934343434343434 [2024-10-14 19:48:12,950 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 164 flow. Second operand 6 states and 235 transitions. [2024-10-14 19:48:12,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 82 transitions, 331 flow [2024-10-14 19:48:12,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 326 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:48:12,952 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 179 flow [2024-10-14 19:48:12,952 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-10-14 19:48:12,953 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2024-10-14 19:48:12,954 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 179 flow [2024-10-14 19:48:12,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:12,954 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:12,954 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:12,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-14 19:48:13,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:13,155 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:13,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:13,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1019408021, now seen corresponding path program 1 times [2024-10-14 19:48:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:13,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144777078] [2024-10-14 19:48:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:13,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:13,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:13,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:13,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-14 19:48:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:13,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:48:13,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:13,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:48:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:13,301 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:13,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:13,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144777078] [2024-10-14 19:48:13,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144777078] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:13,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:13,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:48:13,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023017238] [2024-10-14 19:48:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:13,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:13,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:13,370 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 66 [2024-10-14 19:48:13,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:13,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:13,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 66 [2024-10-14 19:48:13,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:13,493 INFO L124 PetriNetUnfolderBase]: 483/958 cut-off events. [2024-10-14 19:48:13,493 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-10-14 19:48:13,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 958 events. 483/958 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4827 event pairs, 309 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 1864. Up to 738 conditions per place. [2024-10-14 19:48:13,497 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 40 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-14 19:48:13,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 255 flow [2024-10-14 19:48:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:48:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:48:13,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-10-14 19:48:13,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5189393939393939 [2024-10-14 19:48:13,498 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 179 flow. Second operand 4 states and 137 transitions. [2024-10-14 19:48:13,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 255 flow [2024-10-14 19:48:13,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 58 transitions, 247 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:48:13,500 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 167 flow [2024-10-14 19:48:13,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-10-14 19:48:13,501 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2024-10-14 19:48:13,501 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 167 flow [2024-10-14 19:48:13,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:13,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:13,501 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:13,511 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 (10)] Forceful destruction successful, exit code 0 [2024-10-14 19:48:13,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:13,702 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:13,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1019408022, now seen corresponding path program 1 times [2024-10-14 19:48:13,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:13,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595753439] [2024-10-14 19:48:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:13,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:13,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:13,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:13,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-14 19:48:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:13,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:48:13,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:13,823 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 5 [2024-10-14 19:48:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:13,892 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:13,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:13,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595753439] [2024-10-14 19:48:13,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595753439] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:13,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:13,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:13,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925329787] [2024-10-14 19:48:13,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:13,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:48:13,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:13,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:48:13,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:48:14,014 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2024-10-14 19:48:14,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:14,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:14,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2024-10-14 19:48:14,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:14,168 INFO L124 PetriNetUnfolderBase]: 385/769 cut-off events. [2024-10-14 19:48:14,168 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-10-14 19:48:14,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1474 conditions, 769 events. 385/769 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3612 event pairs, 137 based on Foata normal form. 14/665 useless extension candidates. Maximal degree in co-relation 1464. Up to 350 conditions per place. [2024-10-14 19:48:14,171 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 57 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-10-14 19:48:14,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 332 flow [2024-10-14 19:48:14,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2024-10-14 19:48:14,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-10-14 19:48:14,172 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 167 flow. Second operand 5 states and 215 transitions. [2024-10-14 19:48:14,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 332 flow [2024-10-14 19:48:14,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:48:14,174 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 178 flow [2024-10-14 19:48:14,174 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-10-14 19:48:14,175 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2024-10-14 19:48:14,176 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 178 flow [2024-10-14 19:48:14,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:14,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:14,176 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:14,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-14 19:48:14,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:14,377 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:14,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1500342321, now seen corresponding path program 1 times [2024-10-14 19:48:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:14,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039880379] [2024-10-14 19:48:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:14,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:14,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:14,379 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:14,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-14 19:48:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:14,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-14 19:48:14,489 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:14,495 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 5 [2024-10-14 19:48:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:14,567 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:14,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:14,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039880379] [2024-10-14 19:48:14,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039880379] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:14,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:14,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:14,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207197247] [2024-10-14 19:48:14,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:14,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:48:14,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:14,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:48:14,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:48:14,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2024-10-14 19:48:14,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 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) [2024-10-14 19:48:14,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:14,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2024-10-14 19:48:14,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:14,906 INFO L124 PetriNetUnfolderBase]: 686/1440 cut-off events. [2024-10-14 19:48:14,906 INFO L125 PetriNetUnfolderBase]: For 231/231 co-relation queries the response was YES. [2024-10-14 19:48:14,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 1440 events. 686/1440 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8087 event pairs, 262 based on Foata normal form. 46/1354 useless extension candidates. Maximal degree in co-relation 2787. Up to 642 conditions per place. [2024-10-14 19:48:14,911 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 57 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2024-10-14 19:48:14,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 78 transitions, 354 flow [2024-10-14 19:48:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:14,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 213 transitions. [2024-10-14 19:48:14,913 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-10-14 19:48:14,913 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 178 flow. Second operand 5 states and 213 transitions. [2024-10-14 19:48:14,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 78 transitions, 354 flow [2024-10-14 19:48:14,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 78 transitions, 342 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-14 19:48:14,915 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 188 flow [2024-10-14 19:48:14,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-10-14 19:48:14,916 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 4 predicate places. [2024-10-14 19:48:14,916 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 188 flow [2024-10-14 19:48:14,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.4) internal successors, (172), 5 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) [2024-10-14 19:48:14,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:14,916 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:14,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-14 19:48:15,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:15,117 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:15,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:15,118 INFO L85 PathProgramCache]: Analyzing trace with hash -734027796, now seen corresponding path program 1 times [2024-10-14 19:48:15,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:15,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430957024] [2024-10-14 19:48:15,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:15,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:15,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:15,122 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:15,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-14 19:48:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:15,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:48:15,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:15,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:48:15,314 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 5 [2024-10-14 19:48:15,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:48:15,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-14 19:48:15,391 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:48:15,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:48:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:15,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:15,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:15,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430957024] [2024-10-14 19:48:15,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430957024] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:15,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:15,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:48:15,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481591605] [2024-10-14 19:48:15,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:15,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 19:48:15,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:15,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 19:48:15,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 19:48:15,561 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 66 [2024-10-14 19:48:15,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:15,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:15,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 66 [2024-10-14 19:48:15,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:15,753 INFO L124 PetriNetUnfolderBase]: 686/1412 cut-off events. [2024-10-14 19:48:15,753 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-10-14 19:48:15,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2835 conditions, 1412 events. 686/1412 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 7732 event pairs, 262 based on Foata normal form. 24/1360 useless extension candidates. Maximal degree in co-relation 2823. Up to 642 conditions per place. [2024-10-14 19:48:15,758 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 56 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-10-14 19:48:15,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 78 transitions, 358 flow [2024-10-14 19:48:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:48:15,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:48:15,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-10-14 19:48:15,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5883838383838383 [2024-10-14 19:48:15,759 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 188 flow. Second operand 6 states and 233 transitions. [2024-10-14 19:48:15,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 78 transitions, 358 flow [2024-10-14 19:48:15,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 352 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:48:15,761 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 198 flow [2024-10-14 19:48:15,771 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-10-14 19:48:15,771 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2024-10-14 19:48:15,771 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 198 flow [2024-10-14 19:48:15,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:15,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:15,771 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:15,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-14 19:48:15,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:15,975 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:15,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:15,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1445530532, now seen corresponding path program 1 times [2024-10-14 19:48:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:15,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412878697] [2024-10-14 19:48:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:15,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:15,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:15,977 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:15,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-14 19:48:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:16,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:16,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:16,118 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:16,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:16,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412878697] [2024-10-14 19:48:16,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412878697] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:16,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:16,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:16,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162211519] [2024-10-14 19:48:16,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:16,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:16,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:16,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:16,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:16,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2024-10-14 19:48:16,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:16,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:16,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2024-10-14 19:48:16,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:16,317 INFO L124 PetriNetUnfolderBase]: 926/1870 cut-off events. [2024-10-14 19:48:16,317 INFO L125 PetriNetUnfolderBase]: For 465/465 co-relation queries the response was YES. [2024-10-14 19:48:16,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3897 conditions, 1870 events. 926/1870 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 10925 event pairs, 360 based on Foata normal form. 48/1879 useless extension candidates. Maximal degree in co-relation 3884. Up to 870 conditions per place. [2024-10-14 19:48:16,324 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 68 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-10-14 19:48:16,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 89 transitions, 426 flow [2024-10-14 19:48:16,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:48:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:48:16,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-10-14 19:48:16,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7386363636363636 [2024-10-14 19:48:16,325 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 198 flow. Second operand 4 states and 195 transitions. [2024-10-14 19:48:16,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 89 transitions, 426 flow [2024-10-14 19:48:16,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 408 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-14 19:48:16,327 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 203 flow [2024-10-14 19:48:16,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-10-14 19:48:16,329 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2024-10-14 19:48:16,329 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 203 flow [2024-10-14 19:48:16,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:16,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:16,330 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:16,335 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 [2024-10-14 19:48:16,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:16,530 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:16,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1440695873, now seen corresponding path program 1 times [2024-10-14 19:48:16,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:16,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510634484] [2024-10-14 19:48:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:16,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:16,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:16,533 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:16,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-14 19:48:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:16,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:48:16,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:16,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:48:16,711 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 5 [2024-10-14 19:48:16,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:48:16,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-14 19:48:16,786 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:48:16,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:48:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:16,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:17,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510634484] [2024-10-14 19:48:17,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510634484] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:17,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:17,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:48:17,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454860153] [2024-10-14 19:48:17,289 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:17,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:48:17,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:17,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:48:17,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:48:20,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:48:21,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:48:21,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 66 [2024-10-14 19:48:21,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 203 flow. Second operand has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:21,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:21,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 66 [2024-10-14 19:48:21,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:22,318 INFO L124 PetriNetUnfolderBase]: 2339/4402 cut-off events. [2024-10-14 19:48:22,318 INFO L125 PetriNetUnfolderBase]: For 1147/1147 co-relation queries the response was YES. [2024-10-14 19:48:22,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9506 conditions, 4402 events. 2339/4402 cut-off events. For 1147/1147 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 25566 event pairs, 234 based on Foata normal form. 144/4496 useless extension candidates. Maximal degree in co-relation 9491. Up to 845 conditions per place. [2024-10-14 19:48:22,333 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 127 selfloop transitions, 9 changer transitions 0/151 dead transitions. [2024-10-14 19:48:22,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 151 transitions, 734 flow [2024-10-14 19:48:22,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:48:22,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:48:22,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 377 transitions. [2024-10-14 19:48:22,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346801346801347 [2024-10-14 19:48:22,335 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 203 flow. Second operand 9 states and 377 transitions. [2024-10-14 19:48:22,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 151 transitions, 734 flow [2024-10-14 19:48:22,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 151 transitions, 730 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:48:22,340 INFO L231 Difference]: Finished difference. Result has 79 places, 62 transitions, 249 flow [2024-10-14 19:48:22,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=249, PETRI_PLACES=79, PETRI_TRANSITIONS=62} [2024-10-14 19:48:22,341 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 17 predicate places. [2024-10-14 19:48:22,341 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 62 transitions, 249 flow [2024-10-14 19:48:22,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.0) internal successors, (310), 10 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:22,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:22,341 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:22,349 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 [2024-10-14 19:48:22,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:22,545 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:22,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -40667300, now seen corresponding path program 1 times [2024-10-14 19:48:22,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:22,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937707653] [2024-10-14 19:48:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:22,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:22,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:22,548 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:22,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-14 19:48:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:22,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:22,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:22,676 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:22,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:22,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937707653] [2024-10-14 19:48:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937707653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:22,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:22,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:22,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044148081] [2024-10-14 19:48:22,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:22,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:22,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:22,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:22,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2024-10-14 19:48:22,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 62 transitions, 249 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:22,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:22,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2024-10-14 19:48:22,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:23,132 INFO L124 PetriNetUnfolderBase]: 2854/5667 cut-off events. [2024-10-14 19:48:23,132 INFO L125 PetriNetUnfolderBase]: For 2725/2725 co-relation queries the response was YES. [2024-10-14 19:48:23,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12701 conditions, 5667 events. 2854/5667 cut-off events. For 2725/2725 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 38913 event pairs, 1387 based on Foata normal form. 178/5776 useless extension candidates. Maximal degree in co-relation 12682. Up to 2869 conditions per place. [2024-10-14 19:48:23,149 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 74 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-10-14 19:48:23,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 95 transitions, 562 flow [2024-10-14 19:48:23,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:48:23,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:48:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-10-14 19:48:23,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-10-14 19:48:23,150 INFO L175 Difference]: Start difference. First operand has 79 places, 62 transitions, 249 flow. Second operand 4 states and 192 transitions. [2024-10-14 19:48:23,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 95 transitions, 562 flow [2024-10-14 19:48:23,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 95 transitions, 533 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-10-14 19:48:23,154 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 251 flow [2024-10-14 19:48:23,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2024-10-14 19:48:23,155 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 18 predicate places. [2024-10-14 19:48:23,155 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 251 flow [2024-10-14 19:48:23,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:23,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:23,155 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:23,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-14 19:48:23,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:23,356 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:23,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1711899591, now seen corresponding path program 1 times [2024-10-14 19:48:23,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:23,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513000344] [2024-10-14 19:48:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:23,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:23,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:23,358 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:23,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-14 19:48:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:23,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:48:23,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:23,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-14 19:48:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:23,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:23,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:23,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513000344] [2024-10-14 19:48:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513000344] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:23,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:23,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-14 19:48:23,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647747766] [2024-10-14 19:48:23,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:23,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:48:23,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:23,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:48:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:48:24,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 66 [2024-10-14 19:48:24,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 251 flow. Second operand has 10 states, 10 states have (on average 33.5) internal successors, (335), 10 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:24,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:24,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 66 [2024-10-14 19:48:24,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:25,314 INFO L124 PetriNetUnfolderBase]: 3185/6014 cut-off events. [2024-10-14 19:48:25,314 INFO L125 PetriNetUnfolderBase]: For 3203/3203 co-relation queries the response was YES. [2024-10-14 19:48:25,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14215 conditions, 6014 events. 3185/6014 cut-off events. For 3203/3203 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 39010 event pairs, 264 based on Foata normal form. 240/6206 useless extension candidates. Maximal degree in co-relation 14194. Up to 1206 conditions per place. [2024-10-14 19:48:25,334 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 129 selfloop transitions, 8 changer transitions 0/153 dead transitions. [2024-10-14 19:48:25,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 153 transitions, 823 flow [2024-10-14 19:48:25,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:48:25,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:48:25,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 369 transitions. [2024-10-14 19:48:25,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6988636363636364 [2024-10-14 19:48:25,336 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 251 flow. Second operand 8 states and 369 transitions. [2024-10-14 19:48:25,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 153 transitions, 823 flow [2024-10-14 19:48:25,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 153 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:48:25,345 INFO L231 Difference]: Finished difference. Result has 89 places, 63 transitions, 283 flow [2024-10-14 19:48:25,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=283, PETRI_PLACES=89, PETRI_TRANSITIONS=63} [2024-10-14 19:48:25,345 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 27 predicate places. [2024-10-14 19:48:25,345 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 63 transitions, 283 flow [2024-10-14 19:48:25,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.5) internal successors, (335), 10 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:25,346 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:25,346 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:25,351 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 [2024-10-14 19:48:25,546 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 [2024-10-14 19:48:25,547 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:25,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:25,547 INFO L85 PathProgramCache]: Analyzing trace with hash 671438189, now seen corresponding path program 1 times [2024-10-14 19:48:25,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:25,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262117101] [2024-10-14 19:48:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:25,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:25,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:25,549 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) [2024-10-14 19:48:25,549 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 [2024-10-14 19:48:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:25,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:25,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:25,673 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:25,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:25,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262117101] [2024-10-14 19:48:25,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262117101] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:25,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:25,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:25,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906480520] [2024-10-14 19:48:25,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:25,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:25,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:25,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:25,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2024-10-14 19:48:25,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 63 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:25,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:25,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2024-10-14 19:48:25,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:26,251 INFO L124 PetriNetUnfolderBase]: 3321/7043 cut-off events. [2024-10-14 19:48:26,251 INFO L125 PetriNetUnfolderBase]: For 5252/5252 co-relation queries the response was YES. [2024-10-14 19:48:26,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16823 conditions, 7043 events. 3321/7043 cut-off events. For 5252/5252 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 50657 event pairs, 1595 based on Foata normal form. 4/6779 useless extension candidates. Maximal degree in co-relation 16798. Up to 2758 conditions per place. [2024-10-14 19:48:26,272 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 80 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-10-14 19:48:26,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 103 transitions, 649 flow [2024-10-14 19:48:26,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2024-10-14 19:48:26,274 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.693939393939394 [2024-10-14 19:48:26,274 INFO L175 Difference]: Start difference. First operand has 89 places, 63 transitions, 283 flow. Second operand 5 states and 229 transitions. [2024-10-14 19:48:26,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 103 transitions, 649 flow [2024-10-14 19:48:26,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 103 transitions, 622 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-14 19:48:26,285 INFO L231 Difference]: Finished difference. Result has 89 places, 64 transitions, 291 flow [2024-10-14 19:48:26,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=89, PETRI_TRANSITIONS=64} [2024-10-14 19:48:26,285 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 27 predicate places. [2024-10-14 19:48:26,285 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 64 transitions, 291 flow [2024-10-14 19:48:26,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:26,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:26,286 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:26,291 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 [2024-10-14 19:48:26,486 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 [2024-10-14 19:48:26,486 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:26,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:26,487 INFO L85 PathProgramCache]: Analyzing trace with hash 846262181, now seen corresponding path program 2 times [2024-10-14 19:48:26,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:26,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299773076] [2024-10-14 19:48:26,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:48:26,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:26,488 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) [2024-10-14 19:48:26,489 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 [2024-10-14 19:48:26,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:48:26,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:48:26,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:26,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:26,678 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:26,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:26,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299773076] [2024-10-14 19:48:26,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299773076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:26,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:26,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:48:26,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079792441] [2024-10-14 19:48:26,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:26,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:48:26,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:26,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:48:26,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:48:26,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2024-10-14 19:48:26,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 64 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:26,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:26,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2024-10-14 19:48:26,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:27,282 INFO L124 PetriNetUnfolderBase]: 3568/6977 cut-off events. [2024-10-14 19:48:27,282 INFO L125 PetriNetUnfolderBase]: For 6537/6537 co-relation queries the response was YES. [2024-10-14 19:48:27,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17685 conditions, 6977 events. 3568/6977 cut-off events. For 6537/6537 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 49717 event pairs, 1547 based on Foata normal form. 10/6863 useless extension candidates. Maximal degree in co-relation 17658. Up to 3345 conditions per place. [2024-10-14 19:48:27,308 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 69 selfloop transitions, 3 changer transitions 1/92 dead transitions. [2024-10-14 19:48:27,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 578 flow [2024-10-14 19:48:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:48:27,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:48:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-10-14 19:48:27,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2024-10-14 19:48:27,310 INFO L175 Difference]: Start difference. First operand has 89 places, 64 transitions, 291 flow. Second operand 3 states and 154 transitions. [2024-10-14 19:48:27,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 578 flow [2024-10-14 19:48:27,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 92 transitions, 566 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:48:27,318 INFO L231 Difference]: Finished difference. Result has 89 places, 66 transitions, 302 flow [2024-10-14 19:48:27,318 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2024-10-14 19:48:27,319 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 27 predicate places. [2024-10-14 19:48:27,319 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 302 flow [2024-10-14 19:48:27,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:27,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:27,319 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:27,325 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 [2024-10-14 19:48:27,519 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 [2024-10-14 19:48:27,520 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:27,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:27,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1401358303, now seen corresponding path program 1 times [2024-10-14 19:48:27,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:27,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209803210] [2024-10-14 19:48:27,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:27,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:27,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:27,521 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) [2024-10-14 19:48:27,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-10-14 19:48:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:27,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 19:48:27,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:27,648 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 5 [2024-10-14 19:48:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:27,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:28,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:28,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209803210] [2024-10-14 19:48:28,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209803210] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:28,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:28,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-10-14 19:48:28,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835544255] [2024-10-14 19:48:28,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:28,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:48:28,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:48:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:48:28,833 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 66 [2024-10-14 19:48:28,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 302 flow. Second operand has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:28,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:28,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 66 [2024-10-14 19:48:28,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:30,739 INFO L124 PetriNetUnfolderBase]: 8654/16846 cut-off events. [2024-10-14 19:48:30,739 INFO L125 PetriNetUnfolderBase]: For 12219/12219 co-relation queries the response was YES. [2024-10-14 19:48:30,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43457 conditions, 16846 events. 8654/16846 cut-off events. For 12219/12219 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 129510 event pairs, 761 based on Foata normal form. 654/17441 useless extension candidates. Maximal degree in co-relation 43429. Up to 3365 conditions per place. [2024-10-14 19:48:30,802 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 143 selfloop transitions, 8 changer transitions 0/166 dead transitions. [2024-10-14 19:48:30,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 166 transitions, 1089 flow [2024-10-14 19:48:30,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 19:48:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-14 19:48:30,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 357 transitions. [2024-10-14 19:48:30,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2024-10-14 19:48:30,804 INFO L175 Difference]: Start difference. First operand has 89 places, 66 transitions, 302 flow. Second operand 8 states and 357 transitions. [2024-10-14 19:48:30,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 166 transitions, 1089 flow [2024-10-14 19:48:30,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 166 transitions, 1079 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:48:30,828 INFO L231 Difference]: Finished difference. Result has 98 places, 68 transitions, 344 flow [2024-10-14 19:48:30,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=98, PETRI_TRANSITIONS=68} [2024-10-14 19:48:30,829 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 36 predicate places. [2024-10-14 19:48:30,829 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 68 transitions, 344 flow [2024-10-14 19:48:30,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.1) internal successors, (331), 10 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:30,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:30,830 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:30,838 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 [2024-10-14 19:48:31,030 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 [2024-10-14 19:48:31,030 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:31,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:31,031 INFO L85 PathProgramCache]: Analyzing trace with hash -492433924, now seen corresponding path program 1 times [2024-10-14 19:48:31,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:31,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904365424] [2024-10-14 19:48:31,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:31,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:31,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:31,032 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) [2024-10-14 19:48:31,033 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 [2024-10-14 19:48:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:31,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:48:31,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:31,226 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 5 [2024-10-14 19:48:31,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:48:31,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-14 19:48:31,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-14 19:48:31,296 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-14 19:48:31,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-14 19:48:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:31,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:31,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:31,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904365424] [2024-10-14 19:48:31,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904365424] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:31,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:48:31,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:48:31,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222049359] [2024-10-14 19:48:31,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:31,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:48:31,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:31,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:48:31,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:48:35,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-14 19:48:36,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 66 [2024-10-14 19:48:36,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 68 transitions, 344 flow. Second operand has 10 states, 10 states have (on average 31.2) internal successors, (312), 10 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:36,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:36,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 66 [2024-10-14 19:48:36,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:38,430 INFO L124 PetriNetUnfolderBase]: 8034/15596 cut-off events. [2024-10-14 19:48:38,430 INFO L125 PetriNetUnfolderBase]: For 13767/13767 co-relation queries the response was YES. [2024-10-14 19:48:38,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40408 conditions, 15596 events. 8034/15596 cut-off events. For 13767/13767 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 117785 event pairs, 761 based on Foata normal form. 654/16182 useless extension candidates. Maximal degree in co-relation 40376. Up to 3101 conditions per place. [2024-10-14 19:48:38,508 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 138 selfloop transitions, 9 changer transitions 0/163 dead transitions. [2024-10-14 19:48:38,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 163 transitions, 1098 flow [2024-10-14 19:48:38,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:48:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:48:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2024-10-14 19:48:38,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6144781144781145 [2024-10-14 19:48:38,509 INFO L175 Difference]: Start difference. First operand has 98 places, 68 transitions, 344 flow. Second operand 9 states and 365 transitions. [2024-10-14 19:48:38,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 163 transitions, 1098 flow [2024-10-14 19:48:38,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 163 transitions, 1087 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-10-14 19:48:38,542 INFO L231 Difference]: Finished difference. Result has 106 places, 68 transitions, 368 flow [2024-10-14 19:48:38,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=368, PETRI_PLACES=106, PETRI_TRANSITIONS=68} [2024-10-14 19:48:38,543 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 44 predicate places. [2024-10-14 19:48:38,543 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 68 transitions, 368 flow [2024-10-14 19:48:38,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.2) internal successors, (312), 10 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:38,543 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:38,543 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:38,550 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 [2024-10-14 19:48:38,743 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 [2024-10-14 19:48:38,744 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:38,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:38,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1360291297, now seen corresponding path program 1 times [2024-10-14 19:48:38,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:38,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910726954] [2024-10-14 19:48:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:38,744 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:38,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:38,747 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) [2024-10-14 19:48:38,748 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 [2024-10-14 19:48:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:38,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:38,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:38,898 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:38,898 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:38,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910726954] [2024-10-14 19:48:38,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910726954] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:38,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:38,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:38,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139718736] [2024-10-14 19:48:38,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:38,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:38,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:38,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:38,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:38,927 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2024-10-14 19:48:38,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 68 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:38,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:38,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2024-10-14 19:48:38,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:40,773 INFO L124 PetriNetUnfolderBase]: 9653/19302 cut-off events. [2024-10-14 19:48:40,773 INFO L125 PetriNetUnfolderBase]: For 21836/21836 co-relation queries the response was YES. [2024-10-14 19:48:40,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51958 conditions, 19302 events. 9653/19302 cut-off events. For 21836/21836 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 156913 event pairs, 4718 based on Foata normal form. 107/19250 useless extension candidates. Maximal degree in co-relation 51922. Up to 13496 conditions per place. [2024-10-14 19:48:40,855 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 77 selfloop transitions, 4 changer transitions 2/101 dead transitions. [2024-10-14 19:48:40,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 101 transitions, 695 flow [2024-10-14 19:48:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:48:40,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:48:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions. [2024-10-14 19:48:40,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7196969696969697 [2024-10-14 19:48:40,857 INFO L175 Difference]: Start difference. First operand has 106 places, 68 transitions, 368 flow. Second operand 4 states and 190 transitions. [2024-10-14 19:48:40,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 101 transitions, 695 flow [2024-10-14 19:48:40,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 101 transitions, 678 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-14 19:48:40,905 INFO L231 Difference]: Finished difference. Result has 105 places, 72 transitions, 414 flow [2024-10-14 19:48:40,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=414, PETRI_PLACES=105, PETRI_TRANSITIONS=72} [2024-10-14 19:48:40,905 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 43 predicate places. [2024-10-14 19:48:40,905 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 72 transitions, 414 flow [2024-10-14 19:48:40,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:40,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:40,906 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:40,910 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 [2024-10-14 19:48:41,106 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 [2024-10-14 19:48:41,106 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:41,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:41,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1296454207, now seen corresponding path program 2 times [2024-10-14 19:48:41,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:41,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495375547] [2024-10-14 19:48:41,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:48:41,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:41,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:41,108 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) [2024-10-14 19:48:41,109 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 [2024-10-14 19:48:41,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:48:41,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:48:41,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:41,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:41,208 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:41,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:41,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495375547] [2024-10-14 19:48:41,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495375547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:41,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:41,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:41,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305044390] [2024-10-14 19:48:41,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:41,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:41,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:41,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:41,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:41,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2024-10-14 19:48:41,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 72 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:41,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:41,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2024-10-14 19:48:41,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:43,113 INFO L124 PetriNetUnfolderBase]: 9347/18918 cut-off events. [2024-10-14 19:48:43,114 INFO L125 PetriNetUnfolderBase]: For 23463/23463 co-relation queries the response was YES. [2024-10-14 19:48:43,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51370 conditions, 18918 events. 9347/18918 cut-off events. For 23463/23463 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 152822 event pairs, 5658 based on Foata normal form. 107/18842 useless extension candidates. Maximal degree in co-relation 51332. Up to 10539 conditions per place. [2024-10-14 19:48:43,195 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 86 selfloop transitions, 7 changer transitions 2/113 dead transitions. [2024-10-14 19:48:43,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 113 transitions, 819 flow [2024-10-14 19:48:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:48:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:48:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2024-10-14 19:48:43,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7424242424242424 [2024-10-14 19:48:43,196 INFO L175 Difference]: Start difference. First operand has 105 places, 72 transitions, 414 flow. Second operand 4 states and 196 transitions. [2024-10-14 19:48:43,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 113 transitions, 819 flow [2024-10-14 19:48:43,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 815 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-14 19:48:43,243 INFO L231 Difference]: Finished difference. Result has 109 places, 73 transitions, 446 flow [2024-10-14 19:48:43,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=446, PETRI_PLACES=109, PETRI_TRANSITIONS=73} [2024-10-14 19:48:43,243 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 47 predicate places. [2024-10-14 19:48:43,244 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 73 transitions, 446 flow [2024-10-14 19:48:43,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:43,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:43,244 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:43,247 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 (23)] Forceful destruction successful, exit code 0 [2024-10-14 19:48:43,444 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 [2024-10-14 19:48:43,444 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:43,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:43,445 INFO L85 PathProgramCache]: Analyzing trace with hash 95172249, now seen corresponding path program 1 times [2024-10-14 19:48:43,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:43,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396830605] [2024-10-14 19:48:43,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:43,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:43,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:43,446 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) [2024-10-14 19:48:43,447 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 [2024-10-14 19:48:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:43,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:43,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:43,580 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:43,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:43,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396830605] [2024-10-14 19:48:43,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396830605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:43,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:43,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:43,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605103383] [2024-10-14 19:48:43,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:43,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:43,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:43,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:43,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:43,601 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2024-10-14 19:48:43,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 73 transitions, 446 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:43,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:43,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2024-10-14 19:48:43,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:45,507 INFO L124 PetriNetUnfolderBase]: 9307/18631 cut-off events. [2024-10-14 19:48:45,508 INFO L125 PetriNetUnfolderBase]: For 26868/26868 co-relation queries the response was YES. [2024-10-14 19:48:45,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51499 conditions, 18631 events. 9307/18631 cut-off events. For 26868/26868 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 152210 event pairs, 7068 based on Foata normal form. 5/17885 useless extension candidates. Maximal degree in co-relation 51459. Up to 11833 conditions per place. [2024-10-14 19:48:45,736 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 91 selfloop transitions, 7 changer transitions 3/121 dead transitions. [2024-10-14 19:48:45,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 121 transitions, 913 flow [2024-10-14 19:48:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-10-14 19:48:45,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.706060606060606 [2024-10-14 19:48:45,737 INFO L175 Difference]: Start difference. First operand has 109 places, 73 transitions, 446 flow. Second operand 5 states and 233 transitions. [2024-10-14 19:48:45,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 121 transitions, 913 flow [2024-10-14 19:48:45,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 121 transitions, 891 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-14 19:48:45,767 INFO L231 Difference]: Finished difference. Result has 111 places, 74 transitions, 460 flow [2024-10-14 19:48:45,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=460, PETRI_PLACES=111, PETRI_TRANSITIONS=74} [2024-10-14 19:48:45,768 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 49 predicate places. [2024-10-14 19:48:45,768 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 74 transitions, 460 flow [2024-10-14 19:48:45,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:45,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:45,768 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:45,773 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 (24)] Forceful destruction successful, exit code 0 [2024-10-14 19:48:45,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:45,969 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:45,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:45,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2013462901, now seen corresponding path program 2 times [2024-10-14 19:48:45,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:45,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350281662] [2024-10-14 19:48:45,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:48:45,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:45,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:45,971 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:45,972 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 (25)] Waiting until timeout for monitored process [2024-10-14 19:48:46,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:48:46,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:48:46,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:46,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:46,077 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:46,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:46,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350281662] [2024-10-14 19:48:46,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350281662] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:46,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:46,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:46,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111530415] [2024-10-14 19:48:46,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:46,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:46,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:46,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:46,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:46,109 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2024-10-14 19:48:46,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 74 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:46,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:46,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2024-10-14 19:48:46,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:48,021 INFO L124 PetriNetUnfolderBase]: 9411/19050 cut-off events. [2024-10-14 19:48:48,021 INFO L125 PetriNetUnfolderBase]: For 27637/27637 co-relation queries the response was YES. [2024-10-14 19:48:48,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53192 conditions, 19050 events. 9411/19050 cut-off events. For 27637/27637 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 156601 event pairs, 6954 based on Foata normal form. 90/18984 useless extension candidates. Maximal degree in co-relation 53151. Up to 11985 conditions per place. [2024-10-14 19:48:48,124 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 96 selfloop transitions, 6 changer transitions 0/122 dead transitions. [2024-10-14 19:48:48,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 122 transitions, 923 flow [2024-10-14 19:48:48,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:48:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:48:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-10-14 19:48:48,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7651515151515151 [2024-10-14 19:48:48,126 INFO L175 Difference]: Start difference. First operand has 111 places, 74 transitions, 460 flow. Second operand 4 states and 202 transitions. [2024-10-14 19:48:48,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 122 transitions, 923 flow [2024-10-14 19:48:48,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 122 transitions, 911 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:48:48,168 INFO L231 Difference]: Finished difference. Result has 113 places, 76 transitions, 493 flow [2024-10-14 19:48:48,168 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=493, PETRI_PLACES=113, PETRI_TRANSITIONS=76} [2024-10-14 19:48:48,168 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 51 predicate places. [2024-10-14 19:48:48,168 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 76 transitions, 493 flow [2024-10-14 19:48:48,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:48,169 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:48,169 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:48,171 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 (25)] Ended with exit code 0 [2024-10-14 19:48:48,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:48,369 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:48,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:48,370 INFO L85 PathProgramCache]: Analyzing trace with hash -443488615, now seen corresponding path program 3 times [2024-10-14 19:48:48,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:48,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113089179] [2024-10-14 19:48:48,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-14 19:48:48,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:48,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:48,372 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:48,372 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 (26)] Waiting until timeout for monitored process [2024-10-14 19:48:48,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-14 19:48:48,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:48:48,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:48,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:48,484 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:48,484 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:48,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113089179] [2024-10-14 19:48:48,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113089179] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:48,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:48,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:48:48,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711130566] [2024-10-14 19:48:48,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:48,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:48,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:48,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:48,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:48,505 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2024-10-14 19:48:48,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 76 transitions, 493 flow. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:48,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:48,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2024-10-14 19:48:48,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:50,512 INFO L124 PetriNetUnfolderBase]: 10088/20325 cut-off events. [2024-10-14 19:48:50,512 INFO L125 PetriNetUnfolderBase]: For 31135/31135 co-relation queries the response was YES. [2024-10-14 19:48:50,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57739 conditions, 20325 events. 10088/20325 cut-off events. For 31135/31135 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 170354 event pairs, 4933 based on Foata normal form. 92/20244 useless extension candidates. Maximal degree in co-relation 57696. Up to 14380 conditions per place. [2024-10-14 19:48:50,614 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 77 selfloop transitions, 6 changer transitions 3/106 dead transitions. [2024-10-14 19:48:50,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 106 transitions, 809 flow [2024-10-14 19:48:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:48:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:48:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-10-14 19:48:50,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7234848484848485 [2024-10-14 19:48:50,615 INFO L175 Difference]: Start difference. First operand has 113 places, 76 transitions, 493 flow. Second operand 4 states and 191 transitions. [2024-10-14 19:48:50,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 106 transitions, 809 flow [2024-10-14 19:48:50,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 106 transitions, 802 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-14 19:48:50,666 INFO L231 Difference]: Finished difference. Result has 117 places, 77 transitions, 520 flow [2024-10-14 19:48:50,666 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=520, PETRI_PLACES=117, PETRI_TRANSITIONS=77} [2024-10-14 19:48:50,666 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 55 predicate places. [2024-10-14 19:48:50,667 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 77 transitions, 520 flow [2024-10-14 19:48:50,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:50,667 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:50,667 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:48:50,670 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 (26)] Ended with exit code 0 [2024-10-14 19:48:50,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:50,867 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:48:50,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:50,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1255746759, now seen corresponding path program 1 times [2024-10-14 19:48:50,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:48:50,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784041503] [2024-10-14 19:48:50,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:50,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:48:50,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:48:50,869 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:48:50,870 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 (27)] Waiting until timeout for monitored process [2024-10-14 19:48:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:51,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-14 19:48:51,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:51,242 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2024-10-14 19:48:51,243 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 98 treesize of output 38 [2024-10-14 19:48:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:48:51,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:48:51,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:48:51,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784041503] [2024-10-14 19:48:51,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784041503] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:51,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:51,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-14 19:48:51,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298341037] [2024-10-14 19:48:51,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:51,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:48:51,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:48:51,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:48:51,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:48:55,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 19:48:55,668 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 66 [2024-10-14 19:48:55,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 77 transitions, 520 flow. Second operand has 12 states, 12 states have (on average 31.333333333333332) internal successors, (376), 12 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:48:55,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:55,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 66 [2024-10-14 19:48:55,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:56,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 19:48:58,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-14 19:48:59,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-14 19:49:02,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 19:49:05,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 19:49:08,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 19:49:12,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 19:49:16,181 INFO L124 PetriNetUnfolderBase]: 14178/26475 cut-off events. [2024-10-14 19:49:16,181 INFO L125 PetriNetUnfolderBase]: For 40108/40173 co-relation queries the response was YES. [2024-10-14 19:49:16,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75753 conditions, 26475 events. 14178/26475 cut-off events. For 40108/40173 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 207250 event pairs, 9577 based on Foata normal form. 9/26473 useless extension candidates. Maximal degree in co-relation 75709. Up to 16846 conditions per place. [2024-10-14 19:49:16,334 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 201 selfloop transitions, 25 changer transitions 0/240 dead transitions. [2024-10-14 19:49:16,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 240 transitions, 1840 flow [2024-10-14 19:49:16,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 19:49:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-14 19:49:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 595 transitions. [2024-10-14 19:49:16,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.601010101010101 [2024-10-14 19:49:16,335 INFO L175 Difference]: Start difference. First operand has 117 places, 77 transitions, 520 flow. Second operand 15 states and 595 transitions. [2024-10-14 19:49:16,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 240 transitions, 1840 flow [2024-10-14 19:49:16,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 240 transitions, 1828 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-14 19:49:16,409 INFO L231 Difference]: Finished difference. Result has 138 places, 95 transitions, 761 flow [2024-10-14 19:49:16,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=761, PETRI_PLACES=138, PETRI_TRANSITIONS=95} [2024-10-14 19:49:16,410 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 76 predicate places. [2024-10-14 19:49:16,410 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 95 transitions, 761 flow [2024-10-14 19:49:16,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.333333333333332) internal successors, (376), 12 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:16,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:49:16,410 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:49:16,416 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 (27)] Forceful destruction successful, exit code 0 [2024-10-14 19:49:16,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:16,611 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2024-10-14 19:49:16,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:49:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1324396211, now seen corresponding path program 2 times [2024-10-14 19:49:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:49:16,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086714162] [2024-10-14 19:49:16,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:49:16,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:49:16,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:49:16,613 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:49:16,613 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 (28)] Waiting until timeout for monitored process [2024-10-14 19:49:16,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 19:49:16,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:49:16,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-14 19:49:16,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:49:16,953 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2024-10-14 19:49:16,953 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 98 treesize of output 38 [2024-10-14 19:49:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-10-14 19:49:17,021 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:49:17,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:49:17,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086714162] [2024-10-14 19:49:17,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086714162] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:49:17,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:49:17,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-14 19:49:17,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288148142] [2024-10-14 19:49:17,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:49:17,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 19:49:17,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:49:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 19:49:17,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-14 19:49:18,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-14 19:49:20,047 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 66 [2024-10-14 19:49:20,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 95 transitions, 761 flow. Second operand has 12 states, 12 states have (on average 31.333333333333332) internal successors, (376), 12 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:49:20,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:49:20,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 66 [2024-10-14 19:49:20,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand