./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:54:30,841 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:54:30,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:54:30,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:54:30,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:54:30,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:54:30,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:54:30,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:54:30,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:54:30,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:54:30,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:54:30,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:54:30,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:54:30,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:54:30,935 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:54:30,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:54:30,936 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:54:30,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:54:30,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:54:30,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:54:30,937 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:54:30,940 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:54:30,940 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:54:30,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:54:30,940 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:54:30,941 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:54:30,941 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:54:30,941 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:54:30,941 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:54:30,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:54:30,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:54:30,944 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:54:30,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:54:30,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:54:30,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:54:30,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:54:30,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:54:30,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:54:30,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:54:30,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:54:30,946 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:54:30,946 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:54:30,946 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 [2024-10-11 19:54:31,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:54:31,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:54:31,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:54:31,143 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:54:31,143 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:54:31,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-10-11 19:54:32,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:54:32,458 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:54:32,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-10-11 19:54:32,466 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/aa533f22c/4c61edd1bc4244fcbd96f3feef984b18/FLAG04750c03a [2024-10-11 19:54:32,476 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/aa533f22c/4c61edd1bc4244fcbd96f3feef984b18 [2024-10-11 19:54:32,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:54:32,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:54:32,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:54:32,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:54:32,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:54:32,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:54:32" (1/1) ... [2024-10-11 19:54:32,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8dc66d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:32, skipping insertion in model container [2024-10-11 19:54:32,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:54:32" (1/1) ... [2024-10-11 19:54:32,506 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:54:32,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:54:32,669 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) [2024-10-11 19:54:32,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a51369b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:32, skipping insertion in model container [2024-10-11 19:54:32,670 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:54:32,671 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 19:54:32,672 INFO L158 Benchmark]: Toolchain (without parser) took 192.73ms. Allocated memory is still 136.3MB. Free memory was 65.3MB in the beginning and 53.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:54:32,672 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 19:54:32,673 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.80ms. Allocated memory is still 136.3MB. Free memory was 65.3MB in the beginning and 53.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 19:54:32,674 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 136.3MB. Free memory is still 98.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.80ms. Allocated memory is still 136.3MB. Free memory was 65.3MB in the beginning and 53.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 124]: 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-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:54:34,189 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:54:34,240 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 19:54:34,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:54:34,247 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:54:34,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:54:34,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:54:34,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:54:34,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:54:34,273 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:54:34,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:54:34,273 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:54:34,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:54:34,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:54:34,274 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:54:34,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:54:34,274 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:54:34,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:54:34,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:54:34,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:54:34,275 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:54:34,276 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:54:34,276 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:54:34,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:54:34,277 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:54:34,277 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 19:54:34,277 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:54:34,277 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 19:54:34,277 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:54:34,277 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:54:34,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:54:34,278 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:54:34,278 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:54:34,278 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:54:34,278 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:54:34,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:54:34,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:54:34,280 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:54:34,280 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 19:54:34,280 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 19:54:34,280 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:54:34,280 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:54:34,280 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:54:34,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:54:34,281 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 19:54:34,281 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d8fc97f7c37032d6079f8a24b87bc520ff0a9c17c3894514011566166a643e8 [2024-10-11 19:54:34,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:54:34,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:54:34,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:54:34,532 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:54:34,533 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:54:34,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-10-11 19:54:35,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:54:35,963 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:54:35,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2024-10-11 19:54:35,974 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e3b9504c4/c3455c7c632742e8b0f48dae540dd06f/FLAG7cb1aebbd [2024-10-11 19:54:36,359 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/e3b9504c4/c3455c7c632742e8b0f48dae540dd06f [2024-10-11 19:54:36,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:54:36,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:54:36,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:54:36,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:54:36,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:54:36,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1085a55a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36, skipping insertion in model container [2024-10-11 19:54:36,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:54:36,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:54:36,584 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 19:54:36,588 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:54:36,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:54:36,617 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:54:36,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:54:36,667 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:54:36,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36 WrapperNode [2024-10-11 19:54:36,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:54:36,668 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:54:36,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:54:36,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:54:36,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,685 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,704 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 112 [2024-10-11 19:54:36,704 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:54:36,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:54:36,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:54:36,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:54:36,714 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,721 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,745 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 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]. [2024-10-11 19:54:36,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,754 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,759 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:54:36,762 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:54:36,762 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:54:36,762 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:54:36,763 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (1/1) ... [2024-10-11 19:54:36,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:54:36,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:54:36,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:54:36,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:54:36,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:54:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 19:54:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 19:54:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 19:54:36,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 19:54:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 19:54:36,836 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 19:54:36,836 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 19:54:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 19:54:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 19:54:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 19:54:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 19:54:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 19:54:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:54:36,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:54:36,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:54:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 19:54:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 19:54:36,839 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:54:36,942 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:54:36,944 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:54:37,305 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:54:37,306 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:54:37,506 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:54:37,507 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 19:54:37,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:54:37 BoogieIcfgContainer [2024-10-11 19:54:37,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:54:37,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:54:37,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:54:37,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:54:37,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:54:36" (1/3) ... [2024-10-11 19:54:37,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f31e80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:54:37, skipping insertion in model container [2024-10-11 19:54:37,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:54:36" (2/3) ... [2024-10-11 19:54:37,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f31e80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:54:37, skipping insertion in model container [2024-10-11 19:54:37,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:54:37" (3/3) ... [2024-10-11 19:54:37,516 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2024-10-11 19:54:37,529 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:54:37,529 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-11 19:54:37,530 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:54:37,575 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 19:54:37,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 60 transitions, 141 flow [2024-10-11 19:54:37,631 INFO L124 PetriNetUnfolderBase]: 4/57 cut-off events. [2024-10-11 19:54:37,632 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 19:54:37,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 57 events. 4/57 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 143 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2024-10-11 19:54:37,635 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 60 transitions, 141 flow [2024-10-11 19:54:37,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 56 transitions, 130 flow [2024-10-11 19:54:37,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:54:37,653 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;@48c7f5f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:54:37,654 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-10-11 19:54:37,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:54:37,660 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 19:54:37,660 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:54:37,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:37,661 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:54:37,662 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:37,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:37,666 INFO L85 PathProgramCache]: Analyzing trace with hash 520375, now seen corresponding path program 1 times [2024-10-11 19:54:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:37,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700935814] [2024-10-11 19:54:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:37,675 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 [2024-10-11 19:54:37,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:37,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:37,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:37,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 19:54:37,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:37,809 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 [2024-10-11 19:54:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:37,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:37,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:37,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700935814] [2024-10-11 19:54:37,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700935814] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:37,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:37,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:54:37,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474529166] [2024-10-11 19:54:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:37,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:54:37,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:54:37,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:54:37,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-10-11 19:54:37,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-11 19:54:37,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:37,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-10-11 19:54:37,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:38,239 INFO L124 PetriNetUnfolderBase]: 1313/2099 cut-off events. [2024-10-11 19:54:38,240 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-10-11 19:54:38,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4141 conditions, 2099 events. 1313/2099 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 12825 event pairs, 890 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 3981. Up to 1832 conditions per place. [2024-10-11 19:54:38,258 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 31 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-10-11 19:54:38,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 182 flow [2024-10-11 19:54:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:54:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:54:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-10-11 19:54:38,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-10-11 19:54:38,269 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 130 flow. Second operand 3 states and 99 transitions. [2024-10-11 19:54:38,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 182 flow [2024-10-11 19:54:38,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-11 19:54:38,280 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 108 flow [2024-10-11 19:54:38,282 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-10-11 19:54:38,286 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2024-10-11 19:54:38,286 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 108 flow [2024-10-11 19:54:38,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-10-11 19:54:38,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:38,286 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:54:38,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-11 19:54:38,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:38,487 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:38,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:38,488 INFO L85 PathProgramCache]: Analyzing trace with hash 520376, now seen corresponding path program 1 times [2024-10-11 19:54:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:38,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686757010] [2024-10-11 19:54:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:38,488 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 [2024-10-11 19:54:38,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:38,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:38,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:38,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:54:38,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:38,576 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 [2024-10-11 19:54:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:38,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:38,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686757010] [2024-10-11 19:54:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686757010] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:38,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:38,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:54:38,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209184855] [2024-10-11 19:54:38,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:38,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:38,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:38,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:38,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:38,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-10-11 19:54:38,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-11 19:54:38,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:38,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-10-11 19:54:38,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:39,042 INFO L124 PetriNetUnfolderBase]: 1313/2101 cut-off events. [2024-10-11 19:54:39,043 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:54:39,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4034 conditions, 2101 events. 1313/2101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 12911 event pairs, 890 based on Foata normal form. 1/1295 useless extension candidates. Maximal degree in co-relation 4015. Up to 1836 conditions per place. [2024-10-11 19:54:39,053 INFO L140 encePairwiseOnDemand]: 56/60 looper letters, 34 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-10-11 19:54:39,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 184 flow [2024-10-11 19:54:39,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:54:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:54:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-10-11 19:54:39,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-10-11 19:54:39,057 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 108 flow. Second operand 3 states and 98 transitions. [2024-10-11 19:54:39,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 184 flow [2024-10-11 19:54:39,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:39,060 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 118 flow [2024-10-11 19:54:39,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-10-11 19:54:39,066 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2024-10-11 19:54:39,066 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 118 flow [2024-10-11 19:54:39,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-11 19:54:39,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:39,066 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 19:54:39,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-11 19:54:39,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:39,267 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:39,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash 500098148, now seen corresponding path program 1 times [2024-10-11 19:54:39,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:39,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967951253] [2024-10-11 19:54:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:39,268 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 [2024-10-11 19:54:39,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:39,271 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:39,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:39,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-11 19:54:39,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:39,323 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 [2024-10-11 19:54:39,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:39,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:39,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:39,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967951253] [2024-10-11 19:54:39,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967951253] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:39,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:39,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 19:54:39,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413906376] [2024-10-11 19:54:39,639 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:39,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 19:54:39,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 19:54:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 19:54:39,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-10-11 19:54:39,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 118 flow. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 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) [2024-10-11 19:54:39,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:39,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-10-11 19:54:39,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:40,283 INFO L124 PetriNetUnfolderBase]: 1316/2110 cut-off events. [2024-10-11 19:54:40,284 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:54:40,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4063 conditions, 2110 events. 1316/2110 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 12921 event pairs, 890 based on Foata normal form. 0/1303 useless extension candidates. Maximal degree in co-relation 4050. Up to 1839 conditions per place. [2024-10-11 19:54:40,293 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 34 selfloop transitions, 11 changer transitions 0/60 dead transitions. [2024-10-11 19:54:40,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 240 flow [2024-10-11 19:54:40,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 19:54:40,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 19:54:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-10-11 19:54:40,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-10-11 19:54:40,299 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 118 flow. Second operand 9 states and 228 transitions. [2024-10-11 19:54:40,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 240 flow [2024-10-11 19:54:40,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:54:40,302 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 190 flow [2024-10-11 19:54:40,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-10-11 19:54:40,303 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2024-10-11 19:54:40,303 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 190 flow [2024-10-11 19:54:40,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 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) [2024-10-11 19:54:40,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:40,304 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:54:40,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:40,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:40,506 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:40,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:40,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1676824920, now seen corresponding path program 1 times [2024-10-11 19:54:40,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:40,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627505021] [2024-10-11 19:54:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:40,507 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 [2024-10-11 19:54:40,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:40,509 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:40,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:40,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 19:54:40,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:40,554 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 [2024-10-11 19:54:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:40,568 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:40,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:40,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627505021] [2024-10-11 19:54:40,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627505021] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:40,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:40,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:54:40,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322206807] [2024-10-11 19:54:40,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:40,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 19:54:40,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:40,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 19:54:40,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 19:54:40,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-10-11 19:54:40,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-11 19:54:40,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:40,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-10-11 19:54:40,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:40,762 INFO L124 PetriNetUnfolderBase]: 779/1288 cut-off events. [2024-10-11 19:54:40,762 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-10-11 19:54:40,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2494 conditions, 1288 events. 779/1288 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7267 event pairs, 524 based on Foata normal form. 0/926 useless extension candidates. Maximal degree in co-relation 2463. Up to 1099 conditions per place. [2024-10-11 19:54:40,770 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 35 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-10-11 19:54:40,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 55 transitions, 260 flow [2024-10-11 19:54:40,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 19:54:40,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 19:54:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-10-11 19:54:40,771 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-10-11 19:54:40,771 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 190 flow. Second operand 4 states and 110 transitions. [2024-10-11 19:54:40,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 55 transitions, 260 flow [2024-10-11 19:54:40,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 246 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 19:54:40,774 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 176 flow [2024-10-11 19:54:40,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-10-11 19:54:40,774 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2024-10-11 19:54:40,775 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 176 flow [2024-10-11 19:54:40,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2024-10-11 19:54:40,775 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:40,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 19:54:40,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:40,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:40,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:40,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1676824919, now seen corresponding path program 1 times [2024-10-11 19:54:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:40,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738391037] [2024-10-11 19:54:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:40,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:40,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:40,980 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:40,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:41,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 19:54:41,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:41,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:41,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-10-11 19:54:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:41,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:41,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738391037] [2024-10-11 19:54:41,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738391037] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:41,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:41,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-11 19:54:41,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124460193] [2024-10-11 19:54:41,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:41,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 19:54:41,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 19:54:41,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-11 19:54:41,223 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-10-11 19:54:41,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 176 flow. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:41,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:41,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-10-11 19:54:41,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:41,423 INFO L124 PetriNetUnfolderBase]: 598/988 cut-off events. [2024-10-11 19:54:41,423 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-11 19:54:41,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 988 events. 598/988 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5283 event pairs, 377 based on Foata normal form. 0/757 useless extension candidates. Maximal degree in co-relation 1885. Up to 837 conditions per place. [2024-10-11 19:54:41,428 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 31 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-10-11 19:54:41,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 246 flow [2024-10-11 19:54:41,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:54:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:54:41,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-10-11 19:54:41,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-10-11 19:54:41,429 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 176 flow. Second operand 6 states and 155 transitions. [2024-10-11 19:54:41,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 246 flow [2024-10-11 19:54:41,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 19:54:41,433 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 178 flow [2024-10-11 19:54:41,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2024-10-11 19:54:41,435 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2024-10-11 19:54:41,435 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 178 flow [2024-10-11 19:54:41,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:41,435 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:41,435 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 19:54:41,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-11 19:54:41,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:41,636 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:41,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:41,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1617517928, now seen corresponding path program 2 times [2024-10-11 19:54:41,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:41,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360181511] [2024-10-11 19:54:41,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:54:41,637 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 [2024-10-11 19:54:41,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:41,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:41,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:41,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:54:41,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:41,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 19:54:41,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:41,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-10-11 19:54:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:41,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:42,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:42,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360181511] [2024-10-11 19:54:42,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360181511] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:42,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:42,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 19:54:42,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88872921] [2024-10-11 19:54:42,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:42,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 19:54:42,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:42,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 19:54:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 19:54:42,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-10-11 19:54:42,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 178 flow. Second operand has 14 states, 14 states have (on average 21.571428571428573) internal successors, (302), 14 states have internal predecessors, (302), 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) [2024-10-11 19:54:42,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:42,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-10-11 19:54:42,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:44,068 INFO L124 PetriNetUnfolderBase]: 604/1006 cut-off events. [2024-10-11 19:54:44,069 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-10-11 19:54:44,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2002 conditions, 1006 events. 604/1006 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5361 event pairs, 377 based on Foata normal form. 6/781 useless extension candidates. Maximal degree in co-relation 1890. Up to 848 conditions per place. [2024-10-11 19:54:44,075 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 28 selfloop transitions, 29 changer transitions 0/70 dead transitions. [2024-10-11 19:54:44,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 406 flow [2024-10-11 19:54:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 19:54:44,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 19:54:44,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 483 transitions. [2024-10-11 19:54:44,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-10-11 19:54:44,078 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 178 flow. Second operand 21 states and 483 transitions. [2024-10-11 19:54:44,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 406 flow [2024-10-11 19:54:44,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 70 transitions, 400 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 19:54:44,081 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 374 flow [2024-10-11 19:54:44,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=374, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-10-11 19:54:44,084 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 20 predicate places. [2024-10-11 19:54:44,084 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 374 flow [2024-10-11 19:54:44,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 21.571428571428573) internal successors, (302), 14 states have internal predecessors, (302), 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) [2024-10-11 19:54:44,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:44,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:44,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:44,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:44,285 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:44,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash -79017869, now seen corresponding path program 1 times [2024-10-11 19:54:44,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:44,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264618407] [2024-10-11 19:54:44,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:44,286 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 [2024-10-11 19:54:44,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:44,287 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:44,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:44,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 19:54:44,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:44,338 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:44,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:44,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264618407] [2024-10-11 19:54:44,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264618407] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:44,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:44,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 19:54:44,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581473783] [2024-10-11 19:54:44,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:44,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:54:44,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:44,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:54:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:54:44,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-10-11 19:54:44,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:44,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:44,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-10-11 19:54:44,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:44,452 INFO L124 PetriNetUnfolderBase]: 603/1006 cut-off events. [2024-10-11 19:54:44,452 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-11 19:54:44,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2051 conditions, 1006 events. 603/1006 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5353 event pairs, 377 based on Foata normal form. 1/776 useless extension candidates. Maximal degree in co-relation 2000. Up to 868 conditions per place. [2024-10-11 19:54:44,457 INFO L140 encePairwiseOnDemand]: 58/60 looper letters, 57 selfloop transitions, 0 changer transitions 1/70 dead transitions. [2024-10-11 19:54:44,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 70 transitions, 490 flow [2024-10-11 19:54:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:54:44,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:54:44,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-11 19:54:44,458 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-10-11 19:54:44,458 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 374 flow. Second operand 3 states and 87 transitions. [2024-10-11 19:54:44,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 70 transitions, 490 flow [2024-10-11 19:54:44,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 70 transitions, 402 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-10-11 19:54:44,460 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 286 flow [2024-10-11 19:54:44,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-10-11 19:54:44,461 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 15 predicate places. [2024-10-11 19:54:44,461 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 286 flow [2024-10-11 19:54:44,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:54:44,461 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:44,461 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:44,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:44,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:44,662 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:44,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:44,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1332249490, now seen corresponding path program 1 times [2024-10-11 19:54:44,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:44,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [82978488] [2024-10-11 19:54:44,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:44,663 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 [2024-10-11 19:54:44,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:44,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:44,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:44,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:54:44,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:44,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:44,778 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:44,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:44,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [82978488] [2024-10-11 19:54:44,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [82978488] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:44,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:44,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:54:44,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463942701] [2024-10-11 19:54:44,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:44,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:54:44,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:54:44,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:54:44,797 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-10-11 19:54:44,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-10-11 19:54:44,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:44,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-10-11 19:54:44,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:44,955 INFO L124 PetriNetUnfolderBase]: 736/1234 cut-off events. [2024-10-11 19:54:44,955 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-10-11 19:54:44,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 1234 events. 736/1234 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6590 event pairs, 378 based on Foata normal form. 0/1023 useless extension candidates. Maximal degree in co-relation 2443. Up to 795 conditions per place. [2024-10-11 19:54:44,961 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 56 selfloop transitions, 15 changer transitions 0/83 dead transitions. [2024-10-11 19:54:44,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 83 transitions, 458 flow [2024-10-11 19:54:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:54:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:54:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-10-11 19:54:44,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-10-11 19:54:44,963 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 286 flow. Second operand 6 states and 157 transitions. [2024-10-11 19:54:44,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 83 transitions, 458 flow [2024-10-11 19:54:44,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 83 transitions, 456 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 19:54:44,967 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 327 flow [2024-10-11 19:54:44,967 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=327, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-10-11 19:54:44,968 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 19 predicate places. [2024-10-11 19:54:44,968 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 327 flow [2024-10-11 19:54:44,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-10-11 19:54:44,968 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:44,968 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:44,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:45,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:45,170 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:45,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash 349359649, now seen corresponding path program 1 times [2024-10-11 19:54:45,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:45,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872654625] [2024-10-11 19:54:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:45,171 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 [2024-10-11 19:54:45,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:45,172 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:45,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:45,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 19:54:45,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:45,276 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 19:54:45,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:45,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872654625] [2024-10-11 19:54:45,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872654625] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:54:45,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:54:45,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:54:45,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806864916] [2024-10-11 19:54:45,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:54:45,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:54:45,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:45,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:54:45,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:54:45,301 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-10-11 19:54:45,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 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) [2024-10-11 19:54:45,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:45,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-10-11 19:54:45,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:45,503 INFO L124 PetriNetUnfolderBase]: 816/1360 cut-off events. [2024-10-11 19:54:45,503 INFO L125 PetriNetUnfolderBase]: For 231/324 co-relation queries the response was YES. [2024-10-11 19:54:45,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 1360 events. 816/1360 cut-off events. For 231/324 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7314 event pairs, 456 based on Foata normal form. 93/1353 useless extension candidates. Maximal degree in co-relation 3074. Up to 904 conditions per place. [2024-10-11 19:54:45,511 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 59 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-10-11 19:54:45,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 86 transitions, 519 flow [2024-10-11 19:54:45,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:54:45,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:54:45,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-10-11 19:54:45,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-10-11 19:54:45,513 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 327 flow. Second operand 6 states and 156 transitions. [2024-10-11 19:54:45,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 86 transitions, 519 flow [2024-10-11 19:54:45,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 490 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:54:45,515 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 343 flow [2024-10-11 19:54:45,515 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=343, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-10-11 19:54:45,516 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 21 predicate places. [2024-10-11 19:54:45,517 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 343 flow [2024-10-11 19:54:45,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 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) [2024-10-11 19:54:45,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:45,517 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:45,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:45,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:45,718 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:45,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:45,718 INFO L85 PathProgramCache]: Analyzing trace with hash -747608318, now seen corresponding path program 1 times [2024-10-11 19:54:45,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:45,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [329275767] [2024-10-11 19:54:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:45,719 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 [2024-10-11 19:54:45,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:45,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:45,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:45,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:54:45,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:45,792 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 [2024-10-11 19:54:46,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:46,010 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:46,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:46,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:46,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [329275767] [2024-10-11 19:54:46,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [329275767] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:46,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:46,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:54:46,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522534120] [2024-10-11 19:54:46,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:46,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:54:46,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:46,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:54:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:54:46,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-10-11 19:54:46,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 343 flow. Second operand has 12 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 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) [2024-10-11 19:54:46,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:46,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-10-11 19:54:46,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:47,624 INFO L124 PetriNetUnfolderBase]: 1895/2870 cut-off events. [2024-10-11 19:54:47,624 INFO L125 PetriNetUnfolderBase]: For 676/873 co-relation queries the response was YES. [2024-10-11 19:54:47,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7190 conditions, 2870 events. 1895/2870 cut-off events. For 676/873 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15484 event pairs, 457 based on Foata normal form. 373/3177 useless extension candidates. Maximal degree in co-relation 7173. Up to 915 conditions per place. [2024-10-11 19:54:47,636 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 159 selfloop transitions, 23 changer transitions 0/193 dead transitions. [2024-10-11 19:54:47,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 193 transitions, 1070 flow [2024-10-11 19:54:47,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:54:47,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:54:47,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 355 transitions. [2024-10-11 19:54:47,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-10-11 19:54:47,639 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 343 flow. Second operand 12 states and 355 transitions. [2024-10-11 19:54:47,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 193 transitions, 1070 flow [2024-10-11 19:54:47,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 193 transitions, 1027 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 19:54:47,642 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 424 flow [2024-10-11 19:54:47,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=424, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2024-10-11 19:54:47,642 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 32 predicate places. [2024-10-11 19:54:47,642 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 424 flow [2024-10-11 19:54:47,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 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) [2024-10-11 19:54:47,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:47,643 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:54:47,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-10-11 19:54:47,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:47,846 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:47,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:47,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1068176481, now seen corresponding path program 1 times [2024-10-11 19:54:47,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:47,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999941728] [2024-10-11 19:54:47,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:54:47,847 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 [2024-10-11 19:54:47,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:47,848 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:47,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:54:47,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 19:54:47,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:47,909 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 [2024-10-11 19:54:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:48,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 19:54:48,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:48,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999941728] [2024-10-11 19:54:48,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999941728] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:48,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:48,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-10-11 19:54:48,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049375958] [2024-10-11 19:54:48,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:48,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 19:54:48,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 19:54:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-11 19:54:48,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-10-11 19:54:48,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 424 flow. Second operand has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 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) [2024-10-11 19:54:48,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:48,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-10-11 19:54:48,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:54:49,988 INFO L124 PetriNetUnfolderBase]: 3515/5284 cut-off events. [2024-10-11 19:54:49,988 INFO L125 PetriNetUnfolderBase]: For 6776/7563 co-relation queries the response was YES. [2024-10-11 19:54:50,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15085 conditions, 5284 events. 3515/5284 cut-off events. For 6776/7563 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 29381 event pairs, 881 based on Foata normal form. 935/6187 useless extension candidates. Maximal degree in co-relation 15064. Up to 1697 conditions per place. [2024-10-11 19:54:50,022 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 195 selfloop transitions, 23 changer transitions 0/233 dead transitions. [2024-10-11 19:54:50,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 233 transitions, 1604 flow [2024-10-11 19:54:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 19:54:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 19:54:50,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 346 transitions. [2024-10-11 19:54:50,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-10-11 19:54:50,027 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 424 flow. Second operand 12 states and 346 transitions. [2024-10-11 19:54:50,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 233 transitions, 1604 flow [2024-10-11 19:54:50,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 233 transitions, 1474 flow, removed 54 selfloop flow, removed 3 redundant places. [2024-10-11 19:54:50,034 INFO L231 Difference]: Finished difference. Result has 106 places, 91 transitions, 506 flow [2024-10-11 19:54:50,034 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=506, PETRI_PLACES=106, PETRI_TRANSITIONS=91} [2024-10-11 19:54:50,034 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 44 predicate places. [2024-10-11 19:54:50,034 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 91 transitions, 506 flow [2024-10-11 19:54:50,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.666666666666668) internal successors, (248), 12 states have internal predecessors, (248), 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) [2024-10-11 19:54:50,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:54:50,035 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 19:54:50,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-11 19:54:50,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:54:50,236 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:54:50,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:54:50,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1087837808, now seen corresponding path program 3 times [2024-10-11 19:54:50,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:54:50,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466962094] [2024-10-11 19:54:50,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:54:50,237 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 [2024-10-11 19:54:50,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:54:50,238 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:54:50,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:54:50,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 19:54:50,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:54:50,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 19:54:50,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:54:50,433 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 [2024-10-11 19:54:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:50,869 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:54:52,534 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:54:52,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:54:52,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466962094] [2024-10-11 19:54:52,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466962094] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:54:52,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:54:52,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 19:54:52,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991713174] [2024-10-11 19:54:52,535 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:54:52,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 19:54:52,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:54:52,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 19:54:52,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 19:54:53,316 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 60 [2024-10-11 19:54:53,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 91 transitions, 506 flow. Second operand has 26 states, 26 states have (on average 21.76923076923077) internal successors, (566), 26 states have internal predecessors, (566), 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) [2024-10-11 19:54:53,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:54:53,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 60 [2024-10-11 19:54:53,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:07,336 INFO L124 PetriNetUnfolderBase]: 2483/4092 cut-off events. [2024-10-11 19:55:07,336 INFO L125 PetriNetUnfolderBase]: For 6935/7583 co-relation queries the response was YES. [2024-10-11 19:55:07,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12791 conditions, 4092 events. 2483/4092 cut-off events. For 6935/7583 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 24244 event pairs, 1975 based on Foata normal form. 636/4660 useless extension candidates. Maximal degree in co-relation 12766. Up to 3598 conditions per place. [2024-10-11 19:55:07,358 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 42 selfloop transitions, 65 changer transitions 0/127 dead transitions. [2024-10-11 19:55:07,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 127 transitions, 1008 flow [2024-10-11 19:55:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-11 19:55:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-10-11 19:55:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 1005 transitions. [2024-10-11 19:55:07,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-10-11 19:55:07,362 INFO L175 Difference]: Start difference. First operand has 106 places, 91 transitions, 506 flow. Second operand 45 states and 1005 transitions. [2024-10-11 19:55:07,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 127 transitions, 1008 flow [2024-10-11 19:55:07,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 127 transitions, 970 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-11 19:55:07,373 INFO L231 Difference]: Finished difference. Result has 159 places, 127 transitions, 940 flow [2024-10-11 19:55:07,373 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=940, PETRI_PLACES=159, PETRI_TRANSITIONS=127} [2024-10-11 19:55:07,374 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 97 predicate places. [2024-10-11 19:55:07,374 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 127 transitions, 940 flow [2024-10-11 19:55:07,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 21.76923076923077) internal successors, (566), 26 states have internal predecessors, (566), 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) [2024-10-11 19:55:07,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:07,375 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:07,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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)] Forceful destruction successful, exit code 0 [2024-10-11 19:55:07,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:55:07,576 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:55:07,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash -423553134, now seen corresponding path program 2 times [2024-10-11 19:55:07,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:55:07,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214619677] [2024-10-11 19:55:07,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:55:07,577 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 [2024-10-11 19:55:07,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:55:07,580 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:55:07,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:55:07,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:55:07,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:55:07,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:55:07,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:55:07,667 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 [2024-10-11 19:55:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:07,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:55:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:08,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:55:08,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214619677] [2024-10-11 19:55:08,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214619677] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:55:08,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:55:08,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2024-10-11 19:55:08,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873625061] [2024-10-11 19:55:08,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:55:08,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:55:08,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:55:08,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:55:08,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:55:09,656 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-10-11 19:55:09,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 127 transitions, 940 flow. Second operand has 18 states, 18 states have (on average 21.0) internal successors, (378), 18 states have internal predecessors, (378), 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) [2024-10-11 19:55:09,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:09,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-10-11 19:55:09,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:13,883 INFO L124 PetriNetUnfolderBase]: 6844/11289 cut-off events. [2024-10-11 19:55:13,884 INFO L125 PetriNetUnfolderBase]: For 16072/17638 co-relation queries the response was YES. [2024-10-11 19:55:13,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33659 conditions, 11289 events. 6844/11289 cut-off events. For 16072/17638 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 78095 event pairs, 2846 based on Foata normal form. 1210/12360 useless extension candidates. Maximal degree in co-relation 33622. Up to 2781 conditions per place. [2024-10-11 19:55:13,960 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 342 selfloop transitions, 74 changer transitions 0/436 dead transitions. [2024-10-11 19:55:13,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 436 transitions, 3087 flow [2024-10-11 19:55:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 19:55:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 19:55:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 643 transitions. [2024-10-11 19:55:13,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5103174603174603 [2024-10-11 19:55:13,965 INFO L175 Difference]: Start difference. First operand has 159 places, 127 transitions, 940 flow. Second operand 21 states and 643 transitions. [2024-10-11 19:55:13,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 436 transitions, 3087 flow [2024-10-11 19:55:13,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 436 transitions, 2903 flow, removed 63 selfloop flow, removed 20 redundant places. [2024-10-11 19:55:14,001 INFO L231 Difference]: Finished difference. Result has 163 places, 151 transitions, 1057 flow [2024-10-11 19:55:14,002 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1057, PETRI_PLACES=163, PETRI_TRANSITIONS=151} [2024-10-11 19:55:14,003 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 101 predicate places. [2024-10-11 19:55:14,003 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 151 transitions, 1057 flow [2024-10-11 19:55:14,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 21.0) internal successors, (378), 18 states have internal predecessors, (378), 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) [2024-10-11 19:55:14,003 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:14,004 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:14,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:55:14,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:55:14,204 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:55:14,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1412465119, now seen corresponding path program 2 times [2024-10-11 19:55:14,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:55:14,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229088444] [2024-10-11 19:55:14,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 19:55:14,206 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 [2024-10-11 19:55:14,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:55:14,207 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:55:14,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:55:14,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 19:55:14,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:55:14,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-11 19:55:14,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:55:14,289 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 [2024-10-11 19:55:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:14,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:55:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:55:15,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:55:15,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229088444] [2024-10-11 19:55:15,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229088444] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:55:15,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:55:15,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2024-10-11 19:55:15,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185843426] [2024-10-11 19:55:15,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:55:15,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 19:55:15,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:55:15,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 19:55:15,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-10-11 19:55:16,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 60 [2024-10-11 19:55:16,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 151 transitions, 1057 flow. Second operand has 18 states, 18 states have (on average 21.22222222222222) internal successors, (382), 18 states have internal predecessors, (382), 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) [2024-10-11 19:55:16,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:16,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 60 [2024-10-11 19:55:16,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:55:20,436 INFO L124 PetriNetUnfolderBase]: 6679/10916 cut-off events. [2024-10-11 19:55:20,436 INFO L125 PetriNetUnfolderBase]: For 27261/29139 co-relation queries the response was YES. [2024-10-11 19:55:20,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37704 conditions, 10916 events. 6679/10916 cut-off events. For 27261/29139 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 73239 event pairs, 2687 based on Foata normal form. 1238/12035 useless extension candidates. Maximal degree in co-relation 37663. Up to 2761 conditions per place. [2024-10-11 19:55:20,509 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 363 selfloop transitions, 75 changer transitions 0/460 dead transitions. [2024-10-11 19:55:20,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 460 transitions, 3721 flow [2024-10-11 19:55:20,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 19:55:20,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 19:55:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 626 transitions. [2024-10-11 19:55:20,512 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49682539682539684 [2024-10-11 19:55:20,512 INFO L175 Difference]: Start difference. First operand has 163 places, 151 transitions, 1057 flow. Second operand 21 states and 626 transitions. [2024-10-11 19:55:20,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 460 transitions, 3721 flow [2024-10-11 19:55:20,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 460 transitions, 3597 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-10-11 19:55:20,553 INFO L231 Difference]: Finished difference. Result has 185 places, 175 transitions, 1358 flow [2024-10-11 19:55:20,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1358, PETRI_PLACES=185, PETRI_TRANSITIONS=175} [2024-10-11 19:55:20,554 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 123 predicate places. [2024-10-11 19:55:20,554 INFO L471 AbstractCegarLoop]: Abstraction has has 185 places, 175 transitions, 1358 flow [2024-10-11 19:55:20,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 21.22222222222222) internal successors, (382), 18 states have internal predecessors, (382), 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) [2024-10-11 19:55:20,554 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:55:20,554 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:55:20,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-11 19:55:20,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 19:55:20,755 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 30 more)] === [2024-10-11 19:55:20,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:55:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1745078190, now seen corresponding path program 3 times [2024-10-11 19:55:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 19:55:20,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260964564] [2024-10-11 19:55:20,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 19:55:20,756 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 [2024-10-11 19:55:20,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 19:55:20,757 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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) [2024-10-11 19:55:20,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat -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 [2024-10-11 19:55:20,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-11 19:55:20,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 19:55:20,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 19:55:20,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 19:55:20,885 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 [2024-10-11 19:55:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 19:55:21,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 19:55:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 19:55:39,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 19:55:39,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260964564] [2024-10-11 19:55:39,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260964564] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 19:55:39,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 19:55:39,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 19 [2024-10-11 19:55:39,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098449063] [2024-10-11 19:55:39,326 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 19:55:39,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 19:55:39,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 19:55:39,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 19:55:39,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=307, Unknown=3, NotChecked=0, Total=380 [2024-10-11 19:55:43,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 60 [2024-10-11 19:55:43,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 175 transitions, 1358 flow. Second operand has 20 states, 20 states have (on average 20.0) internal successors, (400), 20 states have internal predecessors, (400), 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) [2024-10-11 19:55:43,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:55:43,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 60 [2024-10-11 19:55:43,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:56:03,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-10-11 19:56:07,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-10-11 19:56:11,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]