./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.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/popl20-prod-cons3.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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:00:57,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:00:57,744 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 20:00:57,747 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:00:57,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:00:57,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:00:57,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:00:57,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:00:57,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:00:57,764 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:00:57,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:00:57,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:00:57,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:00:57,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:00:57,765 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:00:57,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:00:57,766 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:00:57,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:00:57,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:00:57,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:00:57,767 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:00:57,767 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:00:57,768 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:00:57,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:00:57,768 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:00:57,768 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:00:57,769 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:00:57,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:00:57,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:00:57,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:00:57,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:00:57,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:00:57,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:00:57,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:00:57,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:00:57,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:00:57,771 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 20:00:57,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 20:00:57,772 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:00:57,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:00:57,772 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:00:57,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:00:57,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-10-11 20:00:57,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:00:57,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:00:57,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:00:57,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:00:57,977 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:00:57,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-11 20:00:59,284 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:00:59,443 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:00:59,444 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-11 20:00:59,450 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/05a065eda/26a8c5b653c84d01848c13fdd99ee715/FLAG9f60b5737 [2024-10-11 20:00:59,862 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/05a065eda/26a8c5b653c84d01848c13fdd99ee715 [2024-10-11 20:00:59,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:00:59,865 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:00:59,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:00:59,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:00:59,870 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:00:59,871 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:00:59" (1/1) ... [2024-10-11 20:00:59,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b4557b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:00:59, skipping insertion in model container [2024-10-11 20:00:59,872 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:00:59" (1/1) ... [2024-10-11 20:00:59,892 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:01:00,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:00,052 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 20:01:00,053 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5843fd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:00, skipping insertion in model container [2024-10-11 20:01:00,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:00,053 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-11 20:01:00,055 INFO L158 Benchmark]: Toolchain (without parser) took 188.53ms. Allocated memory is still 180.4MB. Free memory was 112.7MB in the beginning and 100.9MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:01:00,055 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 180.4MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 20:01:00,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.86ms. Allocated memory is still 180.4MB. Free memory was 112.4MB in the beginning and 100.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-11 20:01:00,056 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 180.4MB. Free memory is still 139.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.86ms. Allocated memory is still 180.4MB. Free memory was 112.4MB in the beginning and 100.9MB 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: 159]: 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/popl20-prod-cons3.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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 20:01:01,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 20:01:01,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-11 20:01:01,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 20:01:01,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 20:01:01,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 20:01:01,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 20:01:01,934 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 20:01:01,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 20:01:01,935 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 20:01:01,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 20:01:01,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 20:01:01,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 20:01:01,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 20:01:01,937 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 20:01:01,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 20:01:01,940 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 20:01:01,940 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 20:01:01,940 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 20:01:01,940 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 20:01:01,940 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 20:01:01,941 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 20:01:01,941 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 20:01:01,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 20:01:01,943 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 20:01:01,944 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-11 20:01:01,944 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 20:01:01,944 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-11 20:01:01,944 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 20:01:01,944 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 20:01:01,944 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 20:01:01,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 20:01:01,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 20:01:01,945 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 20:01:01,945 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 20:01:01,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:01:01,945 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 20:01:01,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 20:01:01,946 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-11 20:01:01,946 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-11 20:01:01,946 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 20:01:01,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 20:01:01,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 20:01:01,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 20:01:01,948 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-11 20:01:01,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-10-11 20:01:02,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 20:01:02,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 20:01:02,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 20:01:02,255 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 20:01:02,255 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 20:01:02,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-11 20:01:03,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 20:01:03,827 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 20:01:03,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-10-11 20:01:03,834 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f063a266c/c7409e3f99034961b8883b5e86ea2ef4/FLAG98eaf1297 [2024-10-11 20:01:04,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f063a266c/c7409e3f99034961b8883b5e86ea2ef4 [2024-10-11 20:01:04,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 20:01:04,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 20:01:04,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:04,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 20:01:04,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 20:01:04,164 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e60bb31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04, skipping insertion in model container [2024-10-11 20:01:04,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:01:04,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:04,360 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-11 20:01:04,363 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 20:01:04,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:04,387 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 20:01:04,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 20:01:04,439 INFO L204 MainTranslator]: Completed translation [2024-10-11 20:01:04,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04 WrapperNode [2024-10-11 20:01:04,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 20:01:04,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 20:01:04,441 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 20:01:04,441 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 20:01:04,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,499 INFO L138 Inliner]: procedures = 27, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 251 [2024-10-11 20:01:04,499 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 20:01:04,500 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 20:01:04,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 20:01:04,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 20:01:04,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,538 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-11 20:01:04,539 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,539 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 20:01:04,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 20:01:04,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 20:01:04,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 20:01:04,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (1/1) ... [2024-10-11 20:01:04,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 20:01:04,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 20:01:04,595 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 20:01:04,597 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 20:01:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 20:01:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-11 20:01:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-11 20:01:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-11 20:01:04,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-11 20:01:04,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-11 20:01:04,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-11 20:01:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-11 20:01:04,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-11 20:01:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-11 20:01:04,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-11 20:01:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-11 20:01:04,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-11 20:01:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 20:01:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 20:01:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 20:01:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 20:01:04,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 20:01:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-11 20:01:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-11 20:01:04,636 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 20:01:04,741 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 20:01:04,743 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 20:01:05,243 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 20:01:05,243 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 20:01:05,512 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 20:01:05,513 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-11 20:01:05,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:01:05 BoogieIcfgContainer [2024-10-11 20:01:05,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 20:01:05,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 20:01:05,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 20:01:05,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 20:01:05,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 08:01:04" (1/3) ... [2024-10-11 20:01:05,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fde8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:01:05, skipping insertion in model container [2024-10-11 20:01:05,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 08:01:04" (2/3) ... [2024-10-11 20:01:05,519 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19fde8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 08:01:05, skipping insertion in model container [2024-10-11 20:01:05,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 08:01:05" (3/3) ... [2024-10-11 20:01:05,520 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-10-11 20:01:05,531 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 20:01:05,531 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-11 20:01:05,531 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 20:01:05,569 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-11 20:01:05,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 67 transitions, 162 flow [2024-10-11 20:01:05,613 INFO L124 PetriNetUnfolderBase]: 6/63 cut-off events. [2024-10-11 20:01:05,613 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-11 20:01:05,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 63 events. 6/63 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-10-11 20:01:05,615 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 67 transitions, 162 flow [2024-10-11 20:01:05,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 62 transitions, 148 flow [2024-10-11 20:01:05,629 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 20:01:05,634 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;@161f53a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 20:01:05,635 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-11 20:01:05,637 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 20:01:05,637 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-11 20:01:05,637 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 20:01:05,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:05,638 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:01:05,638 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:05,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash 727897, now seen corresponding path program 1 times [2024-10-11 20:01:05,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:05,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512519713] [2024-10-11 20:01:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:05,650 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 20:01:05,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:05,653 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 20:01:05,654 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 20:01:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:05,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 20:01:05,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:05,756 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 20:01:05,768 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 20:01:05,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:05,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:05,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512519713] [2024-10-11 20:01:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512519713] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:05,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:05,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 20:01:05,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949018343] [2024-10-11 20:01:05,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:05,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:01:05,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:01:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:01:05,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-11 20:01:05,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 20:01:05,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:05,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-11 20:01:05,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:06,948 INFO L124 PetriNetUnfolderBase]: 7841/11938 cut-off events. [2024-10-11 20:01:06,949 INFO L125 PetriNetUnfolderBase]: For 589/589 co-relation queries the response was YES. [2024-10-11 20:01:06,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23244 conditions, 11938 events. 7841/11938 cut-off events. For 589/589 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 86888 event pairs, 6340 based on Foata normal form. 1/8189 useless extension candidates. Maximal degree in co-relation 22236. Up to 10274 conditions per place. [2024-10-11 20:01:07,016 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 39 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-11 20:01:07,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 222 flow [2024-10-11 20:01:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:01:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:01:07,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-10-11 20:01:07,025 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5472636815920398 [2024-10-11 20:01:07,026 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 148 flow. Second operand 3 states and 110 transitions. [2024-10-11 20:01:07,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 222 flow [2024-10-11 20:01:07,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 206 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-11 20:01:07,050 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 128 flow [2024-10-11 20:01:07,051 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2024-10-11 20:01:07,054 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -10 predicate places. [2024-10-11 20:01:07,054 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 128 flow [2024-10-11 20:01:07,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 20:01:07,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:07,055 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 20:01:07,061 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 20:01:07,255 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 20:01:07,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:07,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:07,256 INFO L85 PathProgramCache]: Analyzing trace with hash 727898, now seen corresponding path program 1 times [2024-10-11 20:01:07,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:07,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848323530] [2024-10-11 20:01:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:07,257 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 20:01:07,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:07,317 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 20:01:07,318 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 20:01:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:07,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 20:01:07,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:07,402 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 20:01:07,462 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 20:01:07,462 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:07,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:07,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848323530] [2024-10-11 20:01:07,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848323530] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:07,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:07,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:07,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887162412] [2024-10-11 20:01:07,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:07,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:07,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:07,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:07,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:07,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-11 20:01:07,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 20:01:07,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:07,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-11 20:01:07,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:08,406 INFO L124 PetriNetUnfolderBase]: 7843/11944 cut-off events. [2024-10-11 20:01:08,406 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-11 20:01:08,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22686 conditions, 11944 events. 7843/11944 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 86927 event pairs, 6340 based on Foata normal form. 0/8192 useless extension candidates. Maximal degree in co-relation 22650. Up to 10283 conditions per place. [2024-10-11 20:01:08,462 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 42 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-10-11 20:01:08,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 240 flow [2024-10-11 20:01:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-10-11 20:01:08,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5186567164179104 [2024-10-11 20:01:08,464 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 128 flow. Second operand 4 states and 139 transitions. [2024-10-11 20:01:08,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 240 flow [2024-10-11 20:01:08,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:01:08,466 INFO L231 Difference]: Finished difference. Result has 63 places, 64 transitions, 180 flow [2024-10-11 20:01:08,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=63, PETRI_TRANSITIONS=64} [2024-10-11 20:01:08,467 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, -6 predicate places. [2024-10-11 20:01:08,467 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 64 transitions, 180 flow [2024-10-11 20:01:08,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 20:01:08,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:08,467 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-11 20:01:08,472 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 (3)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:08,669 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 20:01:08,670 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:08,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash 699533463, now seen corresponding path program 1 times [2024-10-11 20:01:08,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:08,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248174603] [2024-10-11 20:01:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:08,672 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 20:01:08,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:08,674 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 20:01:08,675 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 20:01:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:08,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 20:01:08,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:08,725 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 20:01:08,825 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 20:01:08,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:09,083 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 20:01:09,084 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:09,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248174603] [2024-10-11 20:01:09,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248174603] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:09,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:09,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:01:09,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698396809] [2024-10-11 20:01:09,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:09,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:01:09,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:01:09,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:01:09,179 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-11 20:01:09,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 64 transitions, 180 flow. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 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 20:01:09,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:09,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-11 20:01:09,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:11,151 INFO L124 PetriNetUnfolderBase]: 7849/11962 cut-off events. [2024-10-11 20:01:11,151 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-11 20:01:11,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22764 conditions, 11962 events. 7849/11962 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 977. Compared 86968 event pairs, 6340 based on Foata normal form. 0/8208 useless extension candidates. Maximal degree in co-relation 22661. Up to 10286 conditions per place. [2024-10-11 20:01:11,209 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 42 selfloop transitions, 25 changer transitions 0/82 dead transitions. [2024-10-11 20:01:11,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 392 flow [2024-10-11 20:01:11,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 20:01:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 20:01:11,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 293 transitions. [2024-10-11 20:01:11,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4373134328358209 [2024-10-11 20:01:11,212 INFO L175 Difference]: Start difference. First operand has 63 places, 64 transitions, 180 flow. Second operand 10 states and 293 transitions. [2024-10-11 20:01:11,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 392 flow [2024-10-11 20:01:11,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 20:01:11,214 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 342 flow [2024-10-11 20:01:11,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=342, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-10-11 20:01:11,215 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 6 predicate places. [2024-10-11 20:01:11,215 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 342 flow [2024-10-11 20:01:11,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 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 20:01:11,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:11,216 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:11,221 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 (4)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:11,416 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 20:01:11,417 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:11,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash 798080990, now seen corresponding path program 1 times [2024-10-11 20:01:11,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:11,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748323083] [2024-10-11 20:01:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:11,418 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 20:01:11,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:11,421 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 20:01:11,427 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 20:01:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:11,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:01:11,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:11,518 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 20:01:11,518 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:11,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:11,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748323083] [2024-10-11 20:01:11,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748323083] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:11,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:11,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:11,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400423620] [2024-10-11 20:01:11,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:11,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:11,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:11,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:11,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:11,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-10-11 20:01:11,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 342 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 20:01:11,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:11,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-10-11 20:01:11,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:12,484 INFO L124 PetriNetUnfolderBase]: 8980/13605 cut-off events. [2024-10-11 20:01:12,484 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-10-11 20:01:12,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26213 conditions, 13605 events. 8980/13605 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 1036. Compared 98886 event pairs, 7442 based on Foata normal form. 264/9806 useless extension candidates. Maximal degree in co-relation 26125. Up to 10301 conditions per place. [2024-10-11 20:01:12,555 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 101 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-10-11 20:01:12,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 121 transitions, 708 flow [2024-10-11 20:01:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-10-11 20:01:12,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6455223880597015 [2024-10-11 20:01:12,558 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 342 flow. Second operand 4 states and 173 transitions. [2024-10-11 20:01:12,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 121 transitions, 708 flow [2024-10-11 20:01:12,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 614 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-10-11 20:01:12,564 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 297 flow [2024-10-11 20:01:12,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-10-11 20:01:12,564 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 6 predicate places. [2024-10-11 20:01:12,565 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 297 flow [2024-10-11 20:01:12,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 20:01:12,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:12,566 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:12,571 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 20:01:12,770 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 20:01:12,770 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:12,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:12,771 INFO L85 PathProgramCache]: Analyzing trace with hash -999355557, now seen corresponding path program 1 times [2024-10-11 20:01:12,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:12,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871008882] [2024-10-11 20:01:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:12,774 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 20:01:12,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:12,778 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 20:01:12,783 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 20:01:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:12,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 20:01:12,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:12,842 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 20:01:12,865 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-11 20:01:12,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-11 20:01:12,901 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 20:01:12,901 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:12,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:12,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871008882] [2024-10-11 20:01:12,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871008882] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:12,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:12,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:12,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080849168] [2024-10-11 20:01:12,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:12,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:12,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:12,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:12,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:12,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-11 20:01:12,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 20:01:12,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:12,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-11 20:01:12,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:13,758 INFO L124 PetriNetUnfolderBase]: 7000/10963 cut-off events. [2024-10-11 20:01:13,759 INFO L125 PetriNetUnfolderBase]: For 826/826 co-relation queries the response was YES. [2024-10-11 20:01:13,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22431 conditions, 10963 events. 7000/10963 cut-off events. For 826/826 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 78980 event pairs, 5898 based on Foata normal form. 0/8336 useless extension candidates. Maximal degree in co-relation 22355. Up to 9362 conditions per place. [2024-10-11 20:01:13,820 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 52 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2024-10-11 20:01:13,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 415 flow [2024-10-11 20:01:13,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 20:01:13,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 20:01:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-10-11 20:01:13,822 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4507462686567164 [2024-10-11 20:01:13,822 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 297 flow. Second operand 5 states and 151 transitions. [2024-10-11 20:01:13,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 415 flow [2024-10-11 20:01:13,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 411 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 20:01:13,826 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 307 flow [2024-10-11 20:01:13,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-10-11 20:01:13,827 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 7 predicate places. [2024-10-11 20:01:13,828 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 307 flow [2024-10-11 20:01:13,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 20:01:13,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:13,829 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:13,833 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 20:01:14,030 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 20:01:14,030 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:14,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:14,030 INFO L85 PathProgramCache]: Analyzing trace with hash -999355556, now seen corresponding path program 1 times [2024-10-11 20:01:14,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:14,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403763530] [2024-10-11 20:01:14,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:14,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:14,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:14,033 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 20:01:14,035 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 20:01:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:14,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:01:14,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:14,110 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 20:01:14,115 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 20:01:14,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 20:01:14,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 20:01:14,249 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 20:01:14,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 20:01:14,326 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 20:01:14,327 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:14,952 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 20:01:14,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:14,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403763530] [2024-10-11 20:01:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403763530] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:14,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:14,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-11 20:01:14,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745699622] [2024-10-11 20:01:14,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:14,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 20:01:14,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:14,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 20:01:14,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-10-11 20:01:15,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 67 [2024-10-11 20:01:15,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 307 flow. Second operand has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 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 20:01:15,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:15,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 67 [2024-10-11 20:01:15,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:20,893 INFO L124 PetriNetUnfolderBase]: 15342/23681 cut-off events. [2024-10-11 20:01:20,893 INFO L125 PetriNetUnfolderBase]: For 2159/2159 co-relation queries the response was YES. [2024-10-11 20:01:20,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48194 conditions, 23681 events. 15342/23681 cut-off events. For 2159/2159 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 182905 event pairs, 12826 based on Foata normal form. 0/18535 useless extension candidates. Maximal degree in co-relation 44340. Up to 7748 conditions per place. [2024-10-11 20:01:21,098 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 116 selfloop transitions, 46 changer transitions 0/177 dead transitions. [2024-10-11 20:01:21,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 177 transitions, 988 flow [2024-10-11 20:01:21,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 20:01:21,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 20:01:21,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 414 transitions. [2024-10-11 20:01:21,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44136460554371004 [2024-10-11 20:01:21,101 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 307 flow. Second operand 14 states and 414 transitions. [2024-10-11 20:01:21,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 177 transitions, 988 flow [2024-10-11 20:01:21,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 177 transitions, 945 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 20:01:21,109 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 590 flow [2024-10-11 20:01:21,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=590, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2024-10-11 20:01:21,110 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 23 predicate places. [2024-10-11 20:01:21,110 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 590 flow [2024-10-11 20:01:21,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 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 20:01:21,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:21,111 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2024-10-11 20:01:21,118 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 (7)] Ended with exit code 0 [2024-10-11 20:01:21,311 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 20:01:21,312 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:21,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash 267644110, now seen corresponding path program 2 times [2024-10-11 20:01:21,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:21,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513811204] [2024-10-11 20:01:21,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:01:21,313 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 20:01:21,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:21,320 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 20:01:21,323 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 20:01:21,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 20:01:21,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:21,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-11 20:01:21,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:21,406 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 20:01:21,609 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 20:01:21,610 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:22,151 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 20:01:22,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:22,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513811204] [2024-10-11 20:01:22,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513811204] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:22,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:22,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2024-10-11 20:01:22,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427641398] [2024-10-11 20:01:22,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:22,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 20:01:22,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:22,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 20:01:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-10-11 20:01:22,365 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-11 20:01:22,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 590 flow. Second operand has 14 states, 14 states have (on average 23.571428571428573) internal successors, (330), 14 states have internal predecessors, (330), 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 20:01:22,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:22,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-11 20:01:22,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:25,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:01:27,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:01:32,252 INFO L124 PetriNetUnfolderBase]: 15372/24167 cut-off events. [2024-10-11 20:01:32,253 INFO L125 PetriNetUnfolderBase]: For 7050/7050 co-relation queries the response was YES. [2024-10-11 20:01:32,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50668 conditions, 24167 events. 15372/24167 cut-off events. For 7050/7050 co-relation queries the response was YES. Maximal size of possible extension queue 1410. Compared 191587 event pairs, 12826 based on Foata normal form. 30/19873 useless extension candidates. Maximal degree in co-relation 50478. Up to 20529 conditions per place. [2024-10-11 20:01:32,626 INFO L140 encePairwiseOnDemand]: 58/67 looper letters, 44 selfloop transitions, 107 changer transitions 0/166 dead transitions. [2024-10-11 20:01:32,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 166 transitions, 1354 flow [2024-10-11 20:01:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 20:01:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-11 20:01:32,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 597 transitions. [2024-10-11 20:01:32,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4050203527815468 [2024-10-11 20:01:32,631 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 590 flow. Second operand 22 states and 597 transitions. [2024-10-11 20:01:32,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 166 transitions, 1354 flow [2024-10-11 20:01:32,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 166 transitions, 1351 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:01:32,646 INFO L231 Difference]: Finished difference. Result has 118 places, 166 transitions, 1353 flow [2024-10-11 20:01:32,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1353, PETRI_PLACES=118, PETRI_TRANSITIONS=166} [2024-10-11 20:01:32,646 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 49 predicate places. [2024-10-11 20:01:32,646 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 166 transitions, 1353 flow [2024-10-11 20:01:32,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 23.571428571428573) internal successors, (330), 14 states have internal predecessors, (330), 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 20:01:32,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:32,647 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:32,651 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 20:01:32,850 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 20:01:32,850 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:32,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:32,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1679132477, now seen corresponding path program 1 times [2024-10-11 20:01:32,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:32,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370124546] [2024-10-11 20:01:32,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:32,851 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 20:01:32,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:32,854 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 20:01:32,854 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 20:01:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:32,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 20:01:32,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:32,929 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 20:01:32,929 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:32,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:32,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370124546] [2024-10-11 20:01:32,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370124546] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:32,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:32,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 20:01:32,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229849011] [2024-10-11 20:01:32,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:32,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:01:32,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:01:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:01:32,930 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-10-11 20:01:32,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 166 transitions, 1353 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 20:01:32,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:32,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-10-11 20:01:32,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:34,868 INFO L124 PetriNetUnfolderBase]: 18029/27113 cut-off events. [2024-10-11 20:01:34,869 INFO L125 PetriNetUnfolderBase]: For 6597/6597 co-relation queries the response was YES. [2024-10-11 20:01:35,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57261 conditions, 27113 events. 18029/27113 cut-off events. For 6597/6597 co-relation queries the response was YES. Maximal size of possible extension queue 1271. Compared 194714 event pairs, 6774 based on Foata normal form. 476/22443 useless extension candidates. Maximal degree in co-relation 57029. Up to 15678 conditions per place. [2024-10-11 20:01:35,131 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 172 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2024-10-11 20:01:35,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 191 transitions, 1773 flow [2024-10-11 20:01:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:01:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:01:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-10-11 20:01:35,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6915422885572139 [2024-10-11 20:01:35,132 INFO L175 Difference]: Start difference. First operand has 118 places, 166 transitions, 1353 flow. Second operand 3 states and 139 transitions. [2024-10-11 20:01:35,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 191 transitions, 1773 flow [2024-10-11 20:01:35,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 191 transitions, 1493 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-10-11 20:01:35,148 INFO L231 Difference]: Finished difference. Result has 112 places, 167 transitions, 1089 flow [2024-10-11 20:01:35,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1089, PETRI_PLACES=112, PETRI_TRANSITIONS=167} [2024-10-11 20:01:35,149 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 43 predicate places. [2024-10-11 20:01:35,149 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 167 transitions, 1089 flow [2024-10-11 20:01:35,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 20:01:35,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:35,149 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:35,153 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 (9)] Ended with exit code 0 [2024-10-11 20:01:35,350 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 20:01:35,351 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:35,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:35,351 INFO L85 PathProgramCache]: Analyzing trace with hash 39089822, now seen corresponding path program 1 times [2024-10-11 20:01:35,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:35,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713979276] [2024-10-11 20:01:35,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:35,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-11 20:01:35,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:35,354 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 20:01:35,355 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 20:01:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:35,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 20:01:35,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:35,452 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 20:01:35,453 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:35,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:35,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713979276] [2024-10-11 20:01:35,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713979276] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:35,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:35,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:35,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553875497] [2024-10-11 20:01:35,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:35,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 20:01:35,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:35,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 20:01:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 20:01:35,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-10-11 20:01:35,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 167 transitions, 1089 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 20:01:35,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:35,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-10-11 20:01:35,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:37,583 INFO L124 PetriNetUnfolderBase]: 17066/26303 cut-off events. [2024-10-11 20:01:37,583 INFO L125 PetriNetUnfolderBase]: For 7993/7993 co-relation queries the response was YES. [2024-10-11 20:01:37,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58833 conditions, 26303 events. 17066/26303 cut-off events. For 7993/7993 co-relation queries the response was YES. Maximal size of possible extension queue 1011. Compared 185581 event pairs, 6372 based on Foata normal form. 330/23416 useless extension candidates. Maximal degree in co-relation 58630. Up to 19281 conditions per place. [2024-10-11 20:01:37,936 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 169 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2024-10-11 20:01:37,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 188 transitions, 1488 flow [2024-10-11 20:01:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 20:01:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 20:01:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-10-11 20:01:37,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-11 20:01:37,937 INFO L175 Difference]: Start difference. First operand has 112 places, 167 transitions, 1089 flow. Second operand 3 states and 134 transitions. [2024-10-11 20:01:37,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 188 transitions, 1488 flow [2024-10-11 20:01:37,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 188 transitions, 1486 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:01:37,970 INFO L231 Difference]: Finished difference. Result has 114 places, 168 transitions, 1103 flow [2024-10-11 20:01:37,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1087, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1103, PETRI_PLACES=114, PETRI_TRANSITIONS=168} [2024-10-11 20:01:37,971 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 45 predicate places. [2024-10-11 20:01:37,973 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 168 transitions, 1103 flow [2024-10-11 20:01:37,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 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 20:01:37,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:37,974 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:37,978 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 (10)] Forceful destruction successful, exit code 0 [2024-10-11 20:01:38,175 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 20:01:38,175 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:38,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1607685549, now seen corresponding path program 2 times [2024-10-11 20:01:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:38,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881856072] [2024-10-11 20:01:38,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 20:01:38,176 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 20:01:38,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:38,178 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 20:01:38,179 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 20:01:38,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 20:01:38,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:38,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 20:01:38,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:38,275 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 20:01:38,284 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 20:01:38,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 20:01:38,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-11 20:01:38,420 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-10-11 20:01:38,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-10-11 20:01:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 20:01:38,472 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:38,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:38,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881856072] [2024-10-11 20:01:38,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881856072] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:38,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:38,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 20:01:38,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861207421] [2024-10-11 20:01:38,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:38,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:38,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:38,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:38,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:38,493 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-11 20:01:38,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 168 transitions, 1103 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 20:01:38,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:38,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-11 20:01:38,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:40,473 INFO L124 PetriNetUnfolderBase]: 15057/23788 cut-off events. [2024-10-11 20:01:40,473 INFO L125 PetriNetUnfolderBase]: For 11570/11651 co-relation queries the response was YES. [2024-10-11 20:01:40,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52463 conditions, 23788 events. 15057/23788 cut-off events. For 11570/11651 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 172209 event pairs, 11743 based on Foata normal form. 552/21179 useless extension candidates. Maximal degree in co-relation 52259. Up to 20112 conditions per place. [2024-10-11 20:01:40,640 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 137 selfloop transitions, 12 changer transitions 0/166 dead transitions. [2024-10-11 20:01:40,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 166 transitions, 1383 flow [2024-10-11 20:01:40,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:40,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:40,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-10-11 20:01:40,641 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47388059701492535 [2024-10-11 20:01:40,642 INFO L175 Difference]: Start difference. First operand has 114 places, 168 transitions, 1103 flow. Second operand 4 states and 127 transitions. [2024-10-11 20:01:40,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 166 transitions, 1383 flow [2024-10-11 20:01:40,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 166 transitions, 1356 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-10-11 20:01:40,653 INFO L231 Difference]: Finished difference. Result has 113 places, 166 transitions, 1082 flow [2024-10-11 20:01:40,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1082, PETRI_PLACES=113, PETRI_TRANSITIONS=166} [2024-10-11 20:01:40,653 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 44 predicate places. [2024-10-11 20:01:40,653 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 166 transitions, 1082 flow [2024-10-11 20:01:40,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 20:01:40,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:40,654 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:40,657 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 (11)] Ended with exit code 0 [2024-10-11 20:01:40,856 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 20:01:40,857 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:40,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:40,857 INFO L85 PathProgramCache]: Analyzing trace with hash -488946174, now seen corresponding path program 1 times [2024-10-11 20:01:40,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:40,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178415199] [2024-10-11 20:01:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:40,858 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 20:01:40,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:40,860 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 20:01:40,861 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 20:01:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:40,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-11 20:01:40,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:40,931 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 20:01:40,959 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 20:01:40,959 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:40,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:40,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178415199] [2024-10-11 20:01:40,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178415199] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:40,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:40,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:01:40,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584321511] [2024-10-11 20:01:40,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:40,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:40,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:40,979 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-11 20:01:40,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 166 transitions, 1082 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 20:01:40,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:40,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-11 20:01:40,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:42,289 INFO L124 PetriNetUnfolderBase]: 11475/18904 cut-off events. [2024-10-11 20:01:42,289 INFO L125 PetriNetUnfolderBase]: For 3072/3138 co-relation queries the response was YES. [2024-10-11 20:01:42,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39373 conditions, 18904 events. 11475/18904 cut-off events. For 3072/3138 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 140465 event pairs, 9115 based on Foata normal form. 0/17510 useless extension candidates. Maximal degree in co-relation 39179. Up to 15363 conditions per place. [2024-10-11 20:01:42,464 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 131 selfloop transitions, 16 changer transitions 0/164 dead transitions. [2024-10-11 20:01:42,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 164 transitions, 1370 flow [2024-10-11 20:01:42,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-10-11 20:01:42,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4664179104477612 [2024-10-11 20:01:42,465 INFO L175 Difference]: Start difference. First operand has 113 places, 166 transitions, 1082 flow. Second operand 4 states and 125 transitions. [2024-10-11 20:01:42,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 164 transitions, 1370 flow [2024-10-11 20:01:42,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 164 transitions, 1357 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:01:42,481 INFO L231 Difference]: Finished difference. Result has 112 places, 164 transitions, 1095 flow [2024-10-11 20:01:42,481 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1095, PETRI_PLACES=112, PETRI_TRANSITIONS=164} [2024-10-11 20:01:42,483 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 43 predicate places. [2024-10-11 20:01:42,486 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 164 transitions, 1095 flow [2024-10-11 20:01:42,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 20:01:42,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:42,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:42,490 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 20:01:42,687 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 20:01:42,687 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:42,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:42,687 INFO L85 PathProgramCache]: Analyzing trace with hash -488946173, now seen corresponding path program 1 times [2024-10-11 20:01:42,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:42,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542874483] [2024-10-11 20:01:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:42,690 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 20:01:42,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:42,691 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 20:01:42,692 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 20:01:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:42,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 20:01:42,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:42,839 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 20:01:42,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 20:01:42,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:42,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542874483] [2024-10-11 20:01:42,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542874483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 20:01:42,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 20:01:42,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 20:01:42,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064078463] [2024-10-11 20:01:42,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 20:01:42,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 20:01:42,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:42,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 20:01:42,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 20:01:42,852 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 67 [2024-10-11 20:01:42,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 164 transitions, 1095 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:42,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:42,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 67 [2024-10-11 20:01:42,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:44,706 INFO L124 PetriNetUnfolderBase]: 16477/27533 cut-off events. [2024-10-11 20:01:44,707 INFO L125 PetriNetUnfolderBase]: For 4390/4417 co-relation queries the response was YES. [2024-10-11 20:01:44,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56284 conditions, 27533 events. 16477/27533 cut-off events. For 4390/4417 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 221140 event pairs, 13625 based on Foata normal form. 516/26141 useless extension candidates. Maximal degree in co-relation 56078. Up to 15467 conditions per place. [2024-10-11 20:01:44,913 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 154 selfloop transitions, 18 changer transitions 0/189 dead transitions. [2024-10-11 20:01:44,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 189 transitions, 1505 flow [2024-10-11 20:01:44,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 20:01:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 20:01:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-10-11 20:01:44,914 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5970149253731343 [2024-10-11 20:01:44,914 INFO L175 Difference]: Start difference. First operand has 112 places, 164 transitions, 1095 flow. Second operand 4 states and 160 transitions. [2024-10-11 20:01:44,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 189 transitions, 1505 flow [2024-10-11 20:01:44,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 189 transitions, 1488 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 20:01:44,926 INFO L231 Difference]: Finished difference. Result has 114 places, 164 transitions, 1121 flow [2024-10-11 20:01:44,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1121, PETRI_PLACES=114, PETRI_TRANSITIONS=164} [2024-10-11 20:01:44,931 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 45 predicate places. [2024-10-11 20:01:44,931 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 164 transitions, 1121 flow [2024-10-11 20:01:44,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 20:01:44,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:44,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 20:01:44,936 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 20:01:45,131 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 20:01:45,132 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:45,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2084893930, now seen corresponding path program 1 times [2024-10-11 20:01:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695967503] [2024-10-11 20:01:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 20:01:45,133 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 20:01:45,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:45,135 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 20:01:45,136 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 20:01:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 20:01:45,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 20:01:45,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:45,248 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 20:01:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:01:45,473 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 20:01:46,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:46,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695967503] [2024-10-11 20:01:46,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695967503] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:46,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:46,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-10-11 20:01:46,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187827064] [2024-10-11 20:01:46,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:46,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 20:01:46,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:46,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 20:01:46,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-10-11 20:01:46,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-11 20:01:46,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 164 transitions, 1121 flow. Second operand has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 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 20:01:46,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:46,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-11 20:01:46,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:01:52,372 INFO L124 PetriNetUnfolderBase]: 33387/56779 cut-off events. [2024-10-11 20:01:52,372 INFO L125 PetriNetUnfolderBase]: For 11359/11416 co-relation queries the response was YES. [2024-10-11 20:01:52,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116118 conditions, 56779 events. 33387/56779 cut-off events. For 11359/11416 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 508581 event pairs, 27451 based on Foata normal form. 1188/54923 useless extension candidates. Maximal degree in co-relation 115905. Up to 15392 conditions per place. [2024-10-11 20:01:52,799 INFO L140 encePairwiseOnDemand]: 59/67 looper letters, 134 selfloop transitions, 96 changer transitions 0/245 dead transitions. [2024-10-11 20:01:52,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 245 transitions, 1807 flow [2024-10-11 20:01:52,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 20:01:52,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 20:01:52,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 326 transitions. [2024-10-11 20:01:52,802 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5406301824212272 [2024-10-11 20:01:52,802 INFO L175 Difference]: Start difference. First operand has 114 places, 164 transitions, 1121 flow. Second operand 9 states and 326 transitions. [2024-10-11 20:01:52,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 245 transitions, 1807 flow [2024-10-11 20:01:52,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 245 transitions, 1792 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 20:01:52,819 INFO L231 Difference]: Finished difference. Result has 123 places, 164 transitions, 1311 flow [2024-10-11 20:01:52,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1311, PETRI_PLACES=123, PETRI_TRANSITIONS=164} [2024-10-11 20:01:52,820 INFO L277 CegarLoopForPetriNet]: 69 programPoint places, 54 predicate places. [2024-10-11 20:01:52,820 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 164 transitions, 1311 flow [2024-10-11 20:01:52,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.375) internal successors, (203), 8 states have internal predecessors, (203), 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 20:01:52,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 20:01:52,820 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2024-10-11 20:01:52,824 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 20:01:53,023 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 20:01:53,024 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2024-10-11 20:01:53,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 20:01:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1751373180, now seen corresponding path program 3 times [2024-10-11 20:01:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-11 20:01:53,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69752455] [2024-10-11 20:01:53,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-11 20:01:53,025 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 20:01:53,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-11 20:01:53,027 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 20:01:53,028 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 20:01:53,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-11 20:01:53,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 20:01:53,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 20:01:53,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 20:01:53,206 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 20:01:53,616 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 20:01:53,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 20:01:55,303 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 20:01:55,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-11 20:01:55,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69752455] [2024-10-11 20:01:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69752455] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 20:01:55,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 20:01:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24 [2024-10-11 20:01:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330916935] [2024-10-11 20:01:55,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 20:01:55,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-11 20:01:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-11 20:01:55,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-11 20:01:55,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2024-10-11 20:01:55,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 67 [2024-10-11 20:01:55,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 164 transitions, 1311 flow. Second operand has 26 states, 26 states have (on average 23.76923076923077) internal successors, (618), 26 states have internal predecessors, (618), 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 20:01:55,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 20:01:55,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 67 [2024-10-11 20:01:55,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 20:02:04,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:05,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:07,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:08,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:12,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:13,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:15,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:19,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:21,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:22,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:23,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:25,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:26,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:27,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:28,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:31,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:33,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:34,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:37,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-11 20:02:38,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []