./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.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 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:25:31,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:25:31,639 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:25:31,648 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:25:31,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:25:31,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:25:31,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:25:31,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:25:31,672 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:25:31,672 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:25:31,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:25:31,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:25:31,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:25:31,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:25:31,674 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:25:31,674 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:25:31,674 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:25:31,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:25:31,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:25:31,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:25:31,675 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:25:31,682 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:25:31,682 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:25:31,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:25:31,684 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:25:31,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:25:31,684 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:25:31,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:25:31,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:25:31,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:25:31,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:25:31,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:25:31,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:25:31,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:25:31,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:25:31,687 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:25:31,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:25:31,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:25:31,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:25:31,689 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:25:31,689 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:25:31,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:25:31,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2024-10-24 19:25:31,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:25:31,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:25:31,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:25:31,904 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:25:31,905 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:25:31,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-10-24 19:25:33,183 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:25:33,355 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:25:33,357 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-10-24 19:25:33,368 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa2b48e36/0de08e88059a4fffbc94edf652a77637/FLAG89324e42e [2024-10-24 19:25:33,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa2b48e36/0de08e88059a4fffbc94edf652a77637 [2024-10-24 19:25:33,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:25:33,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:25:33,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:25:33,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:25:33,762 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:25:33,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:33" (1/1) ... [2024-10-24 19:25:33,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ca39aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:33, skipping insertion in model container [2024-10-24 19:25:33,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:33" (1/1) ... [2024-10-24 19:25:33,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:25:33,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:25:33,930 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-24 19:25:33,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2ddb34d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:33, skipping insertion in model container [2024-10-24 19:25:33,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:25:33,931 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-24 19:25:33,933 INFO L158 Benchmark]: Toolchain (without parser) took 176.14ms. Allocated memory is still 182.5MB. Free memory was 115.1MB in the beginning and 103.6MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 19:25:33,933 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory was 77.2MB in the beginning and 77.2MB in the end (delta: 11.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:25:33,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.95ms. Allocated memory is still 182.5MB. Free memory was 114.8MB in the beginning and 103.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 19:25:33,935 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory was 77.2MB in the beginning and 77.2MB in the end (delta: 11.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.95ms. Allocated memory is still 182.5MB. Free memory was 114.8MB in the beginning and 103.6MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 107]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.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 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:25:35,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:25:35,914 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:25:35,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:25:35,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:25:35,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:25:35,949 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:25:35,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:25:35,950 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:25:35,950 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:25:35,950 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:25:35,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:25:35,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:25:35,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:25:35,953 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:25:35,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:25:35,954 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:25:35,954 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:25:35,954 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:25:35,954 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:25:35,955 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:25:35,957 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:25:35,958 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:25:35,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:25:35,958 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:25:35,958 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:25:35,959 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:25:35,959 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:25:35,959 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:25:35,959 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:25:35,961 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:25:35,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:25:35,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:25:35,962 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:25:35,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:25:35,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:25:35,972 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:25:35,972 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:25:35,972 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:25:35,972 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:25:35,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:25:35,973 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:25:35,973 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:25:35,973 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:25:35,973 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:25:35,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c3fe688d0e9a9929009fc24c8ef56c8fc1bfa15613131b287e178eb7d2f1f1e [2024-10-24 19:25:36,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:25:36,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:25:36,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:25:36,274 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:25:36,275 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:25:36,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-10-24 19:25:37,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:25:37,803 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:25:37,804 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c [2024-10-24 19:25:37,814 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d1aad7f/9c752a3e243b430993e37e41fcba60b6/FLAG9188dbedd [2024-10-24 19:25:37,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d1aad7f/9c752a3e243b430993e37e41fcba60b6 [2024-10-24 19:25:37,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:25:37,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:25:37,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:25:37,836 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:25:37,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:25:37,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:37" (1/1) ... [2024-10-24 19:25:37,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a04cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:37, skipping insertion in model container [2024-10-24 19:25:37,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:37" (1/1) ... [2024-10-24 19:25:37,862 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:25:38,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:25:38,072 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-24 19:25:38,076 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:25:38,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:25:38,100 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:25:38,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:25:38,141 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:25:38,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38 WrapperNode [2024-10-24 19:25:38,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:25:38,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:25:38,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:25:38,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:25:38,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,187 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 147 [2024-10-24 19:25:38,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:25:38,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:25:38,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:25:38,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:25:38,201 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,205 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,219 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-24 19:25:38,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,220 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,240 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,245 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:25:38,246 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:25:38,246 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:25:38,246 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:25:38,247 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (1/1) ... [2024-10-24 19:25:38,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:25:38,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:25:38,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:25:38,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:25:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:25:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 19:25:38,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 19:25:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 19:25:38,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 19:25:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-24 19:25:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-24 19:25:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 19:25:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 19:25:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:25:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:25:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:25:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:25:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:25:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:25:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:25:38,320 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:25:38,428 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:25:38,429 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:25:38,721 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:25:38,721 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:25:38,954 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:25:38,955 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 19:25:38,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:25:38 BoogieIcfgContainer [2024-10-24 19:25:38,955 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:25:38,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:25:38,958 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:25:38,960 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:25:38,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:25:37" (1/3) ... [2024-10-24 19:25:38,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f695df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:25:38, skipping insertion in model container [2024-10-24 19:25:38,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:38" (2/3) ... [2024-10-24 19:25:38,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f695df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:25:38, skipping insertion in model container [2024-10-24 19:25:38,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:25:38" (3/3) ... [2024-10-24 19:25:38,963 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2024-10-24 19:25:38,974 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:25:38,975 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-24 19:25:38,975 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:25:39,025 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:25:39,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 94 flow [2024-10-24 19:25:39,071 INFO L124 PetriNetUnfolderBase]: 4/38 cut-off events. [2024-10-24 19:25:39,072 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:25:39,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 38 events. 4/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 80 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2024-10-24 19:25:39,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 94 flow [2024-10-24 19:25:39,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 86 flow [2024-10-24 19:25:39,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:25:39,094 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;@be395db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:25:39,095 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-24 19:25:39,097 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:25:39,097 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-24 19:25:39,097 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:25:39,097 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:39,098 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:25:39,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:39,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:39,102 INFO L85 PathProgramCache]: Analyzing trace with hash 486399, now seen corresponding path program 1 times [2024-10-24 19:25:39,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:39,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307193262] [2024-10-24 19:25:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:39,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:39,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:39,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:39,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-24 19:25:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:39,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:25:39,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:39,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:25:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:39,240 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:39,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:39,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307193262] [2024-10-24 19:25:39,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307193262] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:39,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:39,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:25:39,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205647561] [2024-10-24 19:25:39,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:39,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:25:39,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:25:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:25:39,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:25:39,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:39,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:39,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:25:39,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:39,433 INFO L124 PetriNetUnfolderBase]: 193/366 cut-off events. [2024-10-24 19:25:39,433 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 19:25:39,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 366 events. 193/366 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1756 event pairs, 172 based on Foata normal form. 22/260 useless extension candidates. Maximal degree in co-relation 686. Up to 336 conditions per place. [2024-10-24 19:25:39,447 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 24 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-10-24 19:25:39,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 130 flow [2024-10-24 19:25:39,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:25:39,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:25:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-10-24 19:25:39,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-10-24 19:25:39,458 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 3 states and 59 transitions. [2024-10-24 19:25:39,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 130 flow [2024-10-24 19:25:39,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 122 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:25:39,462 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow [2024-10-24 19:25:39,463 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2024-10-24 19:25:39,466 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -5 predicate places. [2024-10-24 19:25:39,466 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow [2024-10-24 19:25:39,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:39,466 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:39,466 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:25:39,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-10-24 19:25:39,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:39,667 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:39,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:39,668 INFO L85 PathProgramCache]: Analyzing trace with hash 486400, now seen corresponding path program 1 times [2024-10-24 19:25:39,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:39,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250859324] [2024-10-24 19:25:39,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:39,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:39,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:39,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:39,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-24 19:25:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:39,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:25:39,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:39,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:25:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:39,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:39,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:39,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250859324] [2024-10-24 19:25:39,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250859324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:39,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:39,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:25:39,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813646417] [2024-10-24 19:25:39,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:39,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:25:39,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:39,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:25:39,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:25:39,859 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:25:39,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:39,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:39,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:25:39,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:40,054 INFO L124 PetriNetUnfolderBase]: 194/369 cut-off events. [2024-10-24 19:25:40,054 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:25:40,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 369 events. 194/369 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 1783 event pairs, 172 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 706. Up to 341 conditions per place. [2024-10-24 19:25:40,058 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 26 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-10-24 19:25:40,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 142 flow [2024-10-24 19:25:40,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:25:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:25:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 71 transitions. [2024-10-24 19:25:40,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-10-24 19:25:40,062 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 4 states and 71 transitions. [2024-10-24 19:25:40,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 142 flow [2024-10-24 19:25:40,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:25:40,065 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 97 flow [2024-10-24 19:25:40,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2024-10-24 19:25:40,066 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-10-24 19:25:40,066 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 97 flow [2024-10-24 19:25:40,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:40,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:40,066 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-24 19:25:40,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-24 19:25:40,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:40,269 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:40,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash 467445910, now seen corresponding path program 1 times [2024-10-24 19:25:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:40,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817402604] [2024-10-24 19:25:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:40,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:40,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:40,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:40,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-24 19:25:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:40,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:25:40,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:40,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:25:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:40,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:40,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:40,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817402604] [2024-10-24 19:25:40,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817402604] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:40,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:25:40,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:25:40,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817439525] [2024-10-24 19:25:40,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:40,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:25:40,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:40,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:25:40,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:25:40,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:25:40,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:40,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:40,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:25:40,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:41,173 INFO L124 PetriNetUnfolderBase]: 197/378 cut-off events. [2024-10-24 19:25:41,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:25:41,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 378 events. 197/378 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 1843 event pairs, 172 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 713. Up to 344 conditions per place. [2024-10-24 19:25:41,175 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 26 selfloop transitions, 13 changer transitions 0/45 dead transitions. [2024-10-24 19:25:41,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 211 flow [2024-10-24 19:25:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:25:41,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:25:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-10-24 19:25:41,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.355 [2024-10-24 19:25:41,181 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 97 flow. Second operand 10 states and 142 transitions. [2024-10-24 19:25:41,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 211 flow [2024-10-24 19:25:41,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:25:41,183 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 174 flow [2024-10-24 19:25:41,183 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=174, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-10-24 19:25:41,184 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-10-24 19:25:41,184 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 174 flow [2024-10-24 19:25:41,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 10 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:41,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:41,185 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:25:41,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-24 19:25:41,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:41,386 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:41,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:41,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1608076041, now seen corresponding path program 1 times [2024-10-24 19:25:41,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:41,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827681330] [2024-10-24 19:25:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:41,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:41,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:41,390 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:41,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-24 19:25:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:41,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:25:41,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:41,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:25:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:41,448 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:41,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:41,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827681330] [2024-10-24 19:25:41,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827681330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:41,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:41,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:25:41,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004155132] [2024-10-24 19:25:41,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:41,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:25:41,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:25:41,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:25:41,460 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:25:41,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:41,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:41,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:25:41,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:41,529 INFO L124 PetriNetUnfolderBase]: 135/268 cut-off events. [2024-10-24 19:25:41,529 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-24 19:25:41,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 268 events. 135/268 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1130 event pairs, 113 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 535. Up to 233 conditions per place. [2024-10-24 19:25:41,531 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 29 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2024-10-24 19:25:41,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 238 flow [2024-10-24 19:25:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:25:41,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:25:41,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-10-24 19:25:41,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-10-24 19:25:41,532 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 174 flow. Second operand 4 states and 66 transitions. [2024-10-24 19:25:41,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 238 flow [2024-10-24 19:25:41,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 208 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-10-24 19:25:41,533 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 150 flow [2024-10-24 19:25:41,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-10-24 19:25:41,534 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2024-10-24 19:25:41,534 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 150 flow [2024-10-24 19:25:41,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:41,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:41,535 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:25:41,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-24 19:25:41,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:41,737 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:41,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:41,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1608076042, now seen corresponding path program 1 times [2024-10-24 19:25:41,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:41,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841048726] [2024-10-24 19:25:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:41,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:41,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:41,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:41,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-24 19:25:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:41,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:25:41,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:41,805 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:41,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:41,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841048726] [2024-10-24 19:25:41,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841048726] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:41,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:41,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:25:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175800832] [2024-10-24 19:25:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:41,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:25:41,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:41,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:25:41,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:25:41,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-24 19:25:41,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:41,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:41,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-24 19:25:41,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:41,913 INFO L124 PetriNetUnfolderBase]: 147/304 cut-off events. [2024-10-24 19:25:41,914 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 19:25:41,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 304 events. 147/304 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1277 event pairs, 126 based on Foata normal form. 14/262 useless extension candidates. Maximal degree in co-relation 600. Up to 242 conditions per place. [2024-10-24 19:25:41,915 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 32 selfloop transitions, 2 changer transitions 8/49 dead transitions. [2024-10-24 19:25:41,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 250 flow [2024-10-24 19:25:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:25:41,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:25:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-10-24 19:25:41,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.51875 [2024-10-24 19:25:41,916 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 150 flow. Second operand 4 states and 83 transitions. [2024-10-24 19:25:41,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 250 flow [2024-10-24 19:25:41,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:25:41,918 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 154 flow [2024-10-24 19:25:41,918 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-10-24 19:25:41,919 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2024-10-24 19:25:41,919 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 154 flow [2024-10-24 19:25:41,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:41,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:41,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:41,922 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 (6)] Forceful destruction successful, exit code 0 [2024-10-24 19:25:42,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:42,122 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:42,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1399766708, now seen corresponding path program 1 times [2024-10-24 19:25:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:42,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264549002] [2024-10-24 19:25:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:42,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:42,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:42,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:42,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-24 19:25:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:42,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 19:25:42,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:42,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:25:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:42,300 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:42,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:42,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264549002] [2024-10-24 19:25:42,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264549002] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:42,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:25:42,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-24 19:25:42,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575242765] [2024-10-24 19:25:42,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:42,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:25:42,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:42,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:25:42,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:25:42,803 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:25:42,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 154 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:42,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:42,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:25:42,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:43,512 INFO L124 PetriNetUnfolderBase]: 292/589 cut-off events. [2024-10-24 19:25:43,512 INFO L125 PetriNetUnfolderBase]: For 89/92 co-relation queries the response was YES. [2024-10-24 19:25:43,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 589 events. 292/589 cut-off events. For 89/92 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2894 event pairs, 245 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 1306. Up to 232 conditions per place. [2024-10-24 19:25:43,525 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 56 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-10-24 19:25:43,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 372 flow [2024-10-24 19:25:43,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:25:43,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:25:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-10-24 19:25:43,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-10-24 19:25:43,528 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 154 flow. Second operand 9 states and 162 transitions. [2024-10-24 19:25:43,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 372 flow [2024-10-24 19:25:43,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:25:43,531 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 187 flow [2024-10-24 19:25:43,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=187, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2024-10-24 19:25:43,532 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 15 predicate places. [2024-10-24 19:25:43,532 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 187 flow [2024-10-24 19:25:43,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:43,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:43,532 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-24 19:25:43,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-24 19:25:43,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:43,735 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:43,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:43,735 INFO L85 PathProgramCache]: Analyzing trace with hash 860687704, now seen corresponding path program 2 times [2024-10-24 19:25:43,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:43,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133694503] [2024-10-24 19:25:43,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:25:43,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:43,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:43,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:43,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-24 19:25:43,803 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:25:43,804 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:25:43,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 19:25:43,808 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:43,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:25:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:43,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:44,374 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:44,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:44,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133694503] [2024-10-24 19:25:44,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133694503] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:44,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:25:44,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-24 19:25:44,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581028016] [2024-10-24 19:25:44,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:44,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:25:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:44,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:25:44,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:25:44,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:25:44,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 187 flow. Second operand has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:44,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:44,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:25:44,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:46,267 INFO L124 PetriNetUnfolderBase]: 298/607 cut-off events. [2024-10-24 19:25:46,267 INFO L125 PetriNetUnfolderBase]: For 331/343 co-relation queries the response was YES. [2024-10-24 19:25:46,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 607 events. 298/607 cut-off events. For 331/343 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3003 event pairs, 245 based on Foata normal form. 6/550 useless extension candidates. Maximal degree in co-relation 1385. Up to 527 conditions per place. [2024-10-24 19:25:46,277 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 23 selfloop transitions, 30 changer transitions 0/59 dead transitions. [2024-10-24 19:25:46,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 59 transitions, 407 flow [2024-10-24 19:25:46,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:25:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:25:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 279 transitions. [2024-10-24 19:25:46,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3170454545454545 [2024-10-24 19:25:46,283 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 187 flow. Second operand 22 states and 279 transitions. [2024-10-24 19:25:46,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 59 transitions, 407 flow [2024-10-24 19:25:46,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 397 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:25:46,289 INFO L231 Difference]: Finished difference. Result has 78 places, 59 transitions, 381 flow [2024-10-24 19:25:46,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=381, PETRI_PLACES=78, PETRI_TRANSITIONS=59} [2024-10-24 19:25:46,289 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 38 predicate places. [2024-10-24 19:25:46,290 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 59 transitions, 381 flow [2024-10-24 19:25:46,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.571428571428571) internal successors, (162), 14 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:46,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:46,290 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:46,294 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 [2024-10-24 19:25:46,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:46,491 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:46,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:46,491 INFO L85 PathProgramCache]: Analyzing trace with hash -204731726, now seen corresponding path program 2 times [2024-10-24 19:25:46,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:46,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052318071] [2024-10-24 19:25:46,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:25:46,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:46,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:46,495 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:46,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-24 19:25:46,544 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:25:46,544 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:25:46,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:25:46,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:46,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:25:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 19:25:46,706 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:46,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:46,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052318071] [2024-10-24 19:25:46,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052318071] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:46,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:46,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:25:46,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567708451] [2024-10-24 19:25:46,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:46,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:25:46,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:46,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:25:46,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:25:46,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-24 19:25:46,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 59 transitions, 381 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:46,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:46,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-24 19:25:46,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:46,820 INFO L124 PetriNetUnfolderBase]: 248/517 cut-off events. [2024-10-24 19:25:46,821 INFO L125 PetriNetUnfolderBase]: For 306/318 co-relation queries the response was YES. [2024-10-24 19:25:46,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 517 events. 248/517 cut-off events. For 306/318 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2447 event pairs, 198 based on Foata normal form. 27/493 useless extension candidates. Maximal degree in co-relation 1179. Up to 436 conditions per place. [2024-10-24 19:25:46,823 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 38 selfloop transitions, 11 changer transitions 0/56 dead transitions. [2024-10-24 19:25:46,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 56 transitions, 455 flow [2024-10-24 19:25:46,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:25:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:25:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-10-24 19:25:46,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-10-24 19:25:46,824 INFO L175 Difference]: Start difference. First operand has 78 places, 59 transitions, 381 flow. Second operand 4 states and 67 transitions. [2024-10-24 19:25:46,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 56 transitions, 455 flow [2024-10-24 19:25:46,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 374 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-10-24 19:25:46,828 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 298 flow [2024-10-24 19:25:46,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-10-24 19:25:46,829 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 27 predicate places. [2024-10-24 19:25:46,829 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 298 flow [2024-10-24 19:25:46,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:46,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:46,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:46,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-24 19:25:47,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:47,030 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:47,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1502997695, now seen corresponding path program 1 times [2024-10-24 19:25:47,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:47,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206668624] [2024-10-24 19:25:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:25:47,031 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 [2024-10-24 19:25:47,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:47,034 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:47,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-24 19:25:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:25:47,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-24 19:25:47,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:25:47,162 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:47,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206668624] [2024-10-24 19:25:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206668624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:47,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:25:47,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925557087] [2024-10-24 19:25:47,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:47,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:25:47,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:47,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:25:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:25:47,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-24 19:25:47,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:47,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:47,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-24 19:25:47,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:47,321 INFO L124 PetriNetUnfolderBase]: 302/646 cut-off events. [2024-10-24 19:25:47,321 INFO L125 PetriNetUnfolderBase]: For 150/159 co-relation queries the response was YES. [2024-10-24 19:25:47,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 646 events. 302/646 cut-off events. For 150/159 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2980 event pairs, 81 based on Foata normal form. 9/619 useless extension candidates. Maximal degree in co-relation 1388. Up to 394 conditions per place. [2024-10-24 19:25:47,329 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 53 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-10-24 19:25:47,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 429 flow [2024-10-24 19:25:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:25:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:25:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-10-24 19:25:47,330 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-10-24 19:25:47,330 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 298 flow. Second operand 3 states and 61 transitions. [2024-10-24 19:25:47,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 429 flow [2024-10-24 19:25:47,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 417 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:25:47,333 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 309 flow [2024-10-24 19:25:47,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=309, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-10-24 19:25:47,338 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 28 predicate places. [2024-10-24 19:25:47,338 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 309 flow [2024-10-24 19:25:47,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:47,339 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:47,339 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:25:47,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-24 19:25:47,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:47,539 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:47,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:47,540 INFO L85 PathProgramCache]: Analyzing trace with hash 952237377, now seen corresponding path program 2 times [2024-10-24 19:25:47,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:47,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182003365] [2024-10-24 19:25:47,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:25:47,540 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:47,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:47,543 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:47,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-24 19:25:47,593 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 19:25:47,593 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:25:47,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:25:47,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:25:47,817 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:25:47,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182003365] [2024-10-24 19:25:47,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182003365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:25:47,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:25:47,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 19:25:47,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027365144] [2024-10-24 19:25:47,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:25:47,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 19:25:47,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:47,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 19:25:47,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-24 19:25:47,837 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2024-10-24 19:25:47,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 309 flow. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:47,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:47,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2024-10-24 19:25:47,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:25:48,079 INFO L124 PetriNetUnfolderBase]: 482/943 cut-off events. [2024-10-24 19:25:48,079 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2024-10-24 19:25:48,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 943 events. 482/943 cut-off events. For 408/408 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4479 event pairs, 111 based on Foata normal form. 3/913 useless extension candidates. Maximal degree in co-relation 2315. Up to 571 conditions per place. [2024-10-24 19:25:48,085 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 48 selfloop transitions, 13 changer transitions 20/85 dead transitions. [2024-10-24 19:25:48,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 536 flow [2024-10-24 19:25:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:25:48,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:25:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-10-24 19:25:48,086 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-10-24 19:25:48,086 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 309 flow. Second operand 8 states and 118 transitions. [2024-10-24 19:25:48,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 536 flow [2024-10-24 19:25:48,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 521 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-24 19:25:48,091 INFO L231 Difference]: Finished difference. Result has 76 places, 57 transitions, 328 flow [2024-10-24 19:25:48,091 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=328, PETRI_PLACES=76, PETRI_TRANSITIONS=57} [2024-10-24 19:25:48,091 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-10-24 19:25:48,093 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 57 transitions, 328 flow [2024-10-24 19:25:48,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:48,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:25:48,094 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-24 19:25:48,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-24 19:25:48,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:48,300 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:25:48,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:25:48,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1503701596, now seen corresponding path program 3 times [2024-10-24 19:25:48,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:25:48,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271461597] [2024-10-24 19:25:48,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:25:48,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:25:48,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:25:48,301 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:25:48,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-24 19:25:48,462 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-24 19:25:48,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:25:48,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-24 19:25:48,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:25:48,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-24 19:25:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:49,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:25:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:25:50,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:25:50,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271461597] [2024-10-24 19:25:50,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271461597] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:25:50,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:25:50,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-24 19:25:50,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537866641] [2024-10-24 19:25:50,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:25:50,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-24 19:25:50,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:25:50,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-24 19:25:50,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-24 19:25:51,509 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:25:51,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 57 transitions, 328 flow. Second operand has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 26 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:25:51,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:25:51,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:25:51,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:04,038 INFO L124 PetriNetUnfolderBase]: 251/556 cut-off events. [2024-10-24 19:26:04,039 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2024-10-24 19:26:04,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 556 events. 251/556 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2517 event pairs, 198 based on Foata normal form. 12/547 useless extension candidates. Maximal degree in co-relation 1511. Up to 459 conditions per place. [2024-10-24 19:26:04,045 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 21 selfloop transitions, 66 changer transitions 0/93 dead transitions. [2024-10-24 19:26:04,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 93 transitions, 766 flow [2024-10-24 19:26:04,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-24 19:26:04,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-10-24 19:26:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 558 transitions. [2024-10-24 19:26:04,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3032608695652174 [2024-10-24 19:26:04,051 INFO L175 Difference]: Start difference. First operand has 76 places, 57 transitions, 328 flow. Second operand 46 states and 558 transitions. [2024-10-24 19:26:04,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 93 transitions, 766 flow [2024-10-24 19:26:04,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 93 transitions, 710 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-10-24 19:26:04,060 INFO L231 Difference]: Finished difference. Result has 124 places, 93 transitions, 722 flow [2024-10-24 19:26:04,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=722, PETRI_PLACES=124, PETRI_TRANSITIONS=93} [2024-10-24 19:26:04,061 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 84 predicate places. [2024-10-24 19:26:04,065 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 93 transitions, 722 flow [2024-10-24 19:26:04,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.76923076923077) internal successors, (306), 26 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:04,065 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:04,065 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:04,074 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 (12)] Forceful destruction successful, exit code 0 [2024-10-24 19:26:04,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:04,266 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:26:04,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1887570986, now seen corresponding path program 1 times [2024-10-24 19:26:04,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:04,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714568525] [2024-10-24 19:26:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:26:04,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:04,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:04,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:26:04,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-24 19:26:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:26:04,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:26:04,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 19:26:04,382 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:26:04,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:04,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714568525] [2024-10-24 19:26:04,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714568525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:26:04,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:26:04,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:26:04,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632507582] [2024-10-24 19:26:04,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:26:04,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:26:04,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:04,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:26:04,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:26:04,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-10-24 19:26:04,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 93 transitions, 722 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:04,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:04,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-10-24 19:26:04,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:04,606 INFO L124 PetriNetUnfolderBase]: 377/928 cut-off events. [2024-10-24 19:26:04,606 INFO L125 PetriNetUnfolderBase]: For 429/429 co-relation queries the response was YES. [2024-10-24 19:26:04,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 928 events. 377/928 cut-off events. For 429/429 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4751 event pairs, 21 based on Foata normal form. 33/958 useless extension candidates. Maximal degree in co-relation 2157. Up to 283 conditions per place. [2024-10-24 19:26:04,611 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 103 selfloop transitions, 4 changer transitions 0/113 dead transitions. [2024-10-24 19:26:04,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 113 transitions, 995 flow [2024-10-24 19:26:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:26:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:26:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-10-24 19:26:04,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-10-24 19:26:04,612 INFO L175 Difference]: Start difference. First operand has 124 places, 93 transitions, 722 flow. Second operand 5 states and 93 transitions. [2024-10-24 19:26:04,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 113 transitions, 995 flow [2024-10-24 19:26:04,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 113 transitions, 833 flow, removed 51 selfloop flow, removed 21 redundant places. [2024-10-24 19:26:04,617 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 582 flow [2024-10-24 19:26:04,618 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=582, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-10-24 19:26:04,620 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 68 predicate places. [2024-10-24 19:26:04,620 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 582 flow [2024-10-24 19:26:04,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:04,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:04,621 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:04,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-24 19:26:04,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:04,821 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:26:04,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1259751146, now seen corresponding path program 1 times [2024-10-24 19:26:04,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:04,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926723364] [2024-10-24 19:26:04,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:26:04,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:04,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:04,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:26:04,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-24 19:26:04,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:26:04,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 19:26:04,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:05,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:26:05,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:26:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:26:05,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:05,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926723364] [2024-10-24 19:26:05,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926723364] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:26:05,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:26:05,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-10-24 19:26:05,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625396218] [2024-10-24 19:26:05,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:26:05,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 19:26:05,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:05,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 19:26:05,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-24 19:26:05,328 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-24 19:26:05,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 582 flow. Second operand has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:05,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:05,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-24 19:26:05,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:05,596 INFO L124 PetriNetUnfolderBase]: 278/636 cut-off events. [2024-10-24 19:26:05,596 INFO L125 PetriNetUnfolderBase]: For 638/638 co-relation queries the response was YES. [2024-10-24 19:26:05,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1783 conditions, 636 events. 278/636 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3010 event pairs, 179 based on Foata normal form. 24/635 useless extension candidates. Maximal degree in co-relation 1714. Up to 408 conditions per place. [2024-10-24 19:26:05,599 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 41 selfloop transitions, 46 changer transitions 18/112 dead transitions. [2024-10-24 19:26:05,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 112 transitions, 852 flow [2024-10-24 19:26:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:26:05,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:26:05,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-10-24 19:26:05,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-10-24 19:26:05,602 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 582 flow. Second operand 8 states and 130 transitions. [2024-10-24 19:26:05,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 112 transitions, 852 flow [2024-10-24 19:26:05,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 112 transitions, 849 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:26:05,607 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 671 flow [2024-10-24 19:26:05,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=671, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2024-10-24 19:26:05,608 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 76 predicate places. [2024-10-24 19:26:05,608 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 671 flow [2024-10-24 19:26:05,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.833333333333334) internal successors, (166), 12 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:05,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:05,608 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:05,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-24 19:26:05,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:05,812 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:26:05,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:05,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1731858356, now seen corresponding path program 2 times [2024-10-24 19:26:05,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:05,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440568112] [2024-10-24 19:26:05,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 19:26:05,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:05,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:05,818 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:26:05,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-24 19:26:05,893 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 19:26:05,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:26:05,898 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:26:05,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:26:05,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:26:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:26:06,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:06,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440568112] [2024-10-24 19:26:06,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440568112] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:26:06,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:26:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5] total 7 [2024-10-24 19:26:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662002166] [2024-10-24 19:26:06,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:26:06,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 19:26:06,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 19:26:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-24 19:26:06,174 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-10-24 19:26:06,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 671 flow. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:06,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:06,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-10-24 19:26:06,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:06,514 INFO L124 PetriNetUnfolderBase]: 434/1121 cut-off events. [2024-10-24 19:26:06,514 INFO L125 PetriNetUnfolderBase]: For 1061/1109 co-relation queries the response was YES. [2024-10-24 19:26:06,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 1121 events. 434/1121 cut-off events. For 1061/1109 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6768 event pairs, 82 based on Foata normal form. 34/1131 useless extension candidates. Maximal degree in co-relation 2840. Up to 363 conditions per place. [2024-10-24 19:26:06,519 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 107 selfloop transitions, 9 changer transitions 0/123 dead transitions. [2024-10-24 19:26:06,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 123 transitions, 1001 flow [2024-10-24 19:26:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:26:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:26:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-10-24 19:26:06,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-10-24 19:26:06,520 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 671 flow. Second operand 4 states and 92 transitions. [2024-10-24 19:26:06,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 123 transitions, 1001 flow [2024-10-24 19:26:06,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 937 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-10-24 19:26:06,526 INFO L231 Difference]: Finished difference. Result has 112 places, 101 transitions, 698 flow [2024-10-24 19:26:06,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=112, PETRI_TRANSITIONS=101} [2024-10-24 19:26:06,526 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 72 predicate places. [2024-10-24 19:26:06,526 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 101 transitions, 698 flow [2024-10-24 19:26:06,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:06,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:06,527 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:06,531 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 (15)] Forceful destruction successful, exit code 0 [2024-10-24 19:26:06,727 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 [2024-10-24 19:26:06,728 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:26:06,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash 321998182, now seen corresponding path program 3 times [2024-10-24 19:26:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:06,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462400216] [2024-10-24 19:26:06,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 19:26:06,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:06,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:06,731 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) [2024-10-24 19:26:06,732 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 [2024-10-24 19:26:06,800 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-24 19:26:06,801 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:26:06,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:26:06,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:26:07,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:26:07,566 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-24 19:26:07,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2024-10-24 19:26:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:26:11,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:11,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462400216] [2024-10-24 19:26:11,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462400216] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:26:11,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:26:11,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-10-24 19:26:11,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874237635] [2024-10-24 19:26:11,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:26:11,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 19:26:11,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:11,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 19:26:11,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-10-24 19:26:11,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 19:26:11,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 101 transitions, 698 flow. Second operand has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:11,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:11,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 19:26:11,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:14,265 INFO L124 PetriNetUnfolderBase]: 1592/3019 cut-off events. [2024-10-24 19:26:14,266 INFO L125 PetriNetUnfolderBase]: For 3297/3297 co-relation queries the response was YES. [2024-10-24 19:26:14,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8337 conditions, 3019 events. 1592/3019 cut-off events. For 3297/3297 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 17784 event pairs, 238 based on Foata normal form. 4/3023 useless extension candidates. Maximal degree in co-relation 8265. Up to 1093 conditions per place. [2024-10-24 19:26:14,286 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 137 selfloop transitions, 55 changer transitions 10/205 dead transitions. [2024-10-24 19:26:14,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 205 transitions, 1523 flow [2024-10-24 19:26:14,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 19:26:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-24 19:26:14,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 237 transitions. [2024-10-24 19:26:14,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34852941176470587 [2024-10-24 19:26:14,289 INFO L175 Difference]: Start difference. First operand has 112 places, 101 transitions, 698 flow. Second operand 17 states and 237 transitions. [2024-10-24 19:26:14,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 205 transitions, 1523 flow [2024-10-24 19:26:14,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 205 transitions, 1489 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-10-24 19:26:14,295 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 998 flow [2024-10-24 19:26:14,295 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=998, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2024-10-24 19:26:14,296 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 94 predicate places. [2024-10-24 19:26:14,296 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 998 flow [2024-10-24 19:26:14,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:14,296 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:14,296 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:14,302 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 (16)] Forceful destruction successful, exit code 0 [2024-10-24 19:26:14,499 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 [2024-10-24 19:26:14,500 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:26:14,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:14,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1818334018, now seen corresponding path program 4 times [2024-10-24 19:26:14,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:14,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755878959] [2024-10-24 19:26:14,500 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 19:26:14,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:14,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:14,502 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) [2024-10-24 19:26:14,503 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 [2024-10-24 19:26:14,620 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 19:26:14,621 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:26:14,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:26:14,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:26:14,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:26:15,205 INFO L349 Elim1Store]: treesize reduction 168, result has 22.6 percent of original size [2024-10-24 19:26:15,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 92 treesize of output 70 [2024-10-24 19:26:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:26:18,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:26:18,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755878959] [2024-10-24 19:26:18,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755878959] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:26:18,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-24 19:26:18,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-10-24 19:26:18,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403779301] [2024-10-24 19:26:18,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-24 19:26:18,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-24 19:26:18,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:26:18,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-24 19:26:18,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-10-24 19:26:18,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-10-24 19:26:18,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 998 flow. Second operand has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:18,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:26:18,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-10-24 19:26:18,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:26:24,051 INFO L124 PetriNetUnfolderBase]: 2272/4155 cut-off events. [2024-10-24 19:26:24,052 INFO L125 PetriNetUnfolderBase]: For 7737/7737 co-relation queries the response was YES. [2024-10-24 19:26:24,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14110 conditions, 4155 events. 2272/4155 cut-off events. For 7737/7737 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 25522 event pairs, 144 based on Foata normal form. 2/4157 useless extension candidates. Maximal degree in co-relation 14047. Up to 957 conditions per place. [2024-10-24 19:26:24,074 INFO L140 encePairwiseOnDemand]: 25/40 looper letters, 169 selfloop transitions, 120 changer transitions 18/310 dead transitions. [2024-10-24 19:26:24,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 310 transitions, 2484 flow [2024-10-24 19:26:24,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-24 19:26:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-24 19:26:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 424 transitions. [2024-10-24 19:26:24,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-10-24 19:26:24,076 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 998 flow. Second operand 32 states and 424 transitions. [2024-10-24 19:26:24,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 310 transitions, 2484 flow [2024-10-24 19:26:24,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 310 transitions, 2416 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-10-24 19:26:24,092 INFO L231 Difference]: Finished difference. Result has 172 places, 195 transitions, 1789 flow [2024-10-24 19:26:24,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1789, PETRI_PLACES=172, PETRI_TRANSITIONS=195} [2024-10-24 19:26:24,092 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 132 predicate places. [2024-10-24 19:26:24,093 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 195 transitions, 1789 flow [2024-10-24 19:26:24,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.363636363636363) internal successors, (206), 22 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:26:24,093 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:26:24,093 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:26:24,103 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 [2024-10-24 19:26:24,293 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 [2024-10-24 19:26:24,294 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2024-10-24 19:26:24,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:26:24,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1757660054, now seen corresponding path program 5 times [2024-10-24 19:26:24,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:26:24,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869439393] [2024-10-24 19:26:24,294 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 19:26:24,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:26:24,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:26:24,296 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) [2024-10-24 19:26:24,297 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 [2024-10-24 19:26:24,393 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-24 19:26:24,393 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 19:26:24,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 19:26:24,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:26:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 19:26:24,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:26:34,279 INFO L349 Elim1Store]: treesize reduction 672, result has 23.7 percent of original size [2024-10-24 19:26:34,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 181 treesize of output 247