./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-min-max-inc-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:54:43,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:54:43,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:54:43,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:54:43,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:54:43,757 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:54:43,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:54:43,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:54:43,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:54:43,764 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:54:43,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:54:43,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:54:43,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:54:43,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:54:43,766 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:54:43,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:54:43,766 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:54:43,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:54:43,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:54:43,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:54:43,767 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:54:43,771 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:54:43,771 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:54:43,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:54:43,785 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:54:43,785 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:54:43,785 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:54:43,786 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:54:43,786 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:54:43,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:54:43,786 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:54:43,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:54:43,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:54:43,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:54:43,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:54:43,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:54:43,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:54:43,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:54:43,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:54:43,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:54:43,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:54:43,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:54:43,792 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2024-10-14 19:54:44,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:54:44,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:54:44,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:54:44,120 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:54:44,121 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:54:44,122 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-10-14 19:54:45,573 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:54:45,768 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:54:45,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-10-14 19:54:45,778 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6206451c/0986b555f15048d2ab9ee2209133e1ca/FLAG62be19fc6 [2024-10-14 19:54:45,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6206451c/0986b555f15048d2ab9ee2209133e1ca [2024-10-14 19:54:45,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:54:45,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:54:45,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:45,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:54:45,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:54:45,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:45" (1/1) ... [2024-10-14 19:54:45,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60195fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:45, skipping insertion in model container [2024-10-14 19:54:45,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:45" (1/1) ... [2024-10-14 19:54:45,841 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:54:46,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:46,057 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-10-14 19:54:46,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e4a8e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:46, skipping insertion in model container [2024-10-14 19:54:46,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:46,059 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-10-14 19:54:46,061 INFO L158 Benchmark]: Toolchain (without parser) took 262.60ms. Allocated memory is still 161.5MB. Free memory was 114.0MB in the beginning and 102.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 19:54:46,061 INFO L158 Benchmark]: CDTParser took 0.83ms. Allocated memory is still 161.5MB. Free memory was 132.2MB in the beginning and 132.0MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 19:54:46,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.59ms. Allocated memory is still 161.5MB. Free memory was 114.0MB in the beginning and 102.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 19:54:46,064 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83ms. Allocated memory is still 161.5MB. Free memory was 132.2MB in the beginning and 132.0MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 255.59ms. Allocated memory is still 161.5MB. Free memory was 114.0MB in the beginning and 102.6MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 143]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:54:48,121 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:54:48,208 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-14 19:54:48,214 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:54:48,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:54:48,243 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:54:48,244 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:54:48,248 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:54:48,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:54:48,249 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:54:48,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:54:48,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:54:48,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:54:48,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:54:48,251 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:54:48,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:54:48,254 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:54:48,256 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:54:48,256 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:54:48,256 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:54:48,257 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:54:48,257 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:54:48,257 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:54:48,257 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:54:48,258 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:54:48,258 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 19:54:48,258 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:54:48,258 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 19:54:48,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:54:48,259 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:54:48,259 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:54:48,259 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:54:48,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:54:48,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:54:48,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:54:48,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:54:48,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:54:48,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:54:48,264 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 19:54:48,264 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 19:54:48,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:54:48,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:54:48,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:54:48,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:54:48,266 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 19:54:48,266 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2024-10-14 19:54:48,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:54:48,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:54:48,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:54:48,641 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:54:48,642 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:54:48,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-10-14 19:54:50,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:54:50,343 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:54:50,344 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-min-max-inc-dec.wvr.c [2024-10-14 19:54:50,352 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3852c78ee/87887cd240f84bdb809d05168fe760f4/FLAG104c19771 [2024-10-14 19:54:50,371 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3852c78ee/87887cd240f84bdb809d05168fe760f4 [2024-10-14 19:54:50,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:54:50,376 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:54:50,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:50,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:54:50,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:54:50,387 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d3b8e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50, skipping insertion in model container [2024-10-14 19:54:50,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,416 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:54:50,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:50,711 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-10-14 19:54:50,716 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:54:50,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:50,758 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:54:50,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:54:50,815 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:54:50,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50 WrapperNode [2024-10-14 19:54:50,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:54:50,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:54:50,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:54:50,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:54:50,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,874 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 150 [2024-10-14 19:54:50,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:54:50,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:54:50,878 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:54:50,878 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:54:50,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,897 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,924 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-10-14 19:54:50,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,951 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:54:50,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:54:50,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:54:50,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:54:50,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (1/1) ... [2024-10-14 19:54:50,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:54:50,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:54:50,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:54:50,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:54:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:54:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 19:54:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 19:54:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-14 19:54:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-14 19:54:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:54:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:54:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:54:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:54:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:54:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:54:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 19:54:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 19:54:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-14 19:54:51,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-14 19:54:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:54:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:54:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 19:54:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:54:51,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:54:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-14 19:54:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-14 19:54:51,041 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:54:51,190 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:54:51,192 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:54:51,763 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:54:51,764 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:54:52,174 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:54:52,174 INFO L314 CfgBuilder]: Removed 5 assume(true) statements. [2024-10-14 19:54:52,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:54:52 BoogieIcfgContainer [2024-10-14 19:54:52,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:54:52,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:54:52,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:54:52,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:54:52,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:54:50" (1/3) ... [2024-10-14 19:54:52,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efad0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:54:52, skipping insertion in model container [2024-10-14 19:54:52,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:54:50" (2/3) ... [2024-10-14 19:54:52,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3efad0a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:54:52, skipping insertion in model container [2024-10-14 19:54:52,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:54:52" (3/3) ... [2024-10-14 19:54:52,184 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-10-14 19:54:52,204 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:54:52,205 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-10-14 19:54:52,205 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:54:52,315 INFO L143 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-10-14 19:54:52,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 84 transitions, 203 flow [2024-10-14 19:54:52,395 INFO L124 PetriNetUnfolderBase]: 5/79 cut-off events. [2024-10-14 19:54:52,396 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-14 19:54:52,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 79 events. 5/79 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 269 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2024-10-14 19:54:52,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 84 transitions, 203 flow [2024-10-14 19:54:52,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 78 transitions, 186 flow [2024-10-14 19:54:52,421 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:54:52,430 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;@4e2992c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:54:52,430 INFO L334 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-10-14 19:54:52,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:54:52,436 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-10-14 19:54:52,436 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:54:52,436 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:54:52,437 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:54:52,438 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-10-14 19:54:52,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:54:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash 638690, now seen corresponding path program 1 times [2024-10-14 19:54:52,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:54:52,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108502574] [2024-10-14 19:54:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:54:52,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:54:52,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:54:52,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:54:52,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-14 19:54:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:54:52,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:54:52,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:54:52,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:54:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:54:52,654 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:54:52,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:54:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108502574] [2024-10-14 19:54:52,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108502574] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:54:52,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:54:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 19:54:52,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104137337] [2024-10-14 19:54:52,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:54:52,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:54:52,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:54:52,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:54:52,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:54:52,709 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 84 [2024-10-14 19:54:52,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:54:52,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:54:52,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 84 [2024-10-14 19:54:52,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:03,591 INFO L124 PetriNetUnfolderBase]: 88309/115428 cut-off events. [2024-10-14 19:55:03,591 INFO L125 PetriNetUnfolderBase]: For 2171/2171 co-relation queries the response was YES. [2024-10-14 19:55:03,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230843 conditions, 115428 events. 88309/115428 cut-off events. For 2171/2171 co-relation queries the response was YES. Maximal size of possible extension queue 6403. Compared 799069 event pairs, 65243 based on Foata normal form. 1/73899 useless extension candidates. Maximal degree in co-relation 223249. Up to 107685 conditions per place. [2024-10-14 19:55:04,551 INFO L140 encePairwiseOnDemand]: 68/84 looper letters, 47 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-10-14 19:55:04,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 254 flow [2024-10-14 19:55:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:55:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:55:04,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-10-14 19:55:04,566 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2024-10-14 19:55:04,568 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 186 flow. Second operand 3 states and 123 transitions. [2024-10-14 19:55:04,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 254 flow [2024-10-14 19:55:05,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 63 transitions, 234 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-14 19:55:05,530 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 140 flow [2024-10-14 19:55:05,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-10-14 19:55:05,536 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -23 predicate places. [2024-10-14 19:55:05,536 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 140 flow [2024-10-14 19:55:05,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:05,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:05,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:55:05,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-14 19:55:05,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:05,738 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-10-14 19:55:05,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash 638691, now seen corresponding path program 1 times [2024-10-14 19:55:05,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:05,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817200721] [2024-10-14 19:55:05,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:05,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:05,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:05,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:05,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-14 19:55:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:05,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:55:05,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:05,835 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 [2024-10-14 19:55:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:05,932 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:05,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817200721] [2024-10-14 19:55:05,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817200721] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:05,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:05,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:55:05,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028844848] [2024-10-14 19:55:05,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:05,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:55:05,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:05,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:55:05,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:55:05,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 84 [2024-10-14 19:55:05,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:05,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:05,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 84 [2024-10-14 19:55:05,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:13,326 INFO L124 PetriNetUnfolderBase]: 88309/115430 cut-off events. [2024-10-14 19:55:13,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:55:13,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226618 conditions, 115430 events. 88309/115430 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6403. Compared 798786 event pairs, 65243 based on Foata normal form. 1/73901 useless extension candidates. Maximal degree in co-relation 226599. Up to 107689 conditions per place. [2024-10-14 19:55:14,034 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 50 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-10-14 19:55:14,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 248 flow [2024-10-14 19:55:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:55:14,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:55:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-10-14 19:55:14,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-10-14 19:55:14,036 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 140 flow. Second operand 3 states and 114 transitions. [2024-10-14 19:55:14,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 248 flow [2024-10-14 19:55:14,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:55:14,039 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 150 flow [2024-10-14 19:55:14,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-10-14 19:55:14,040 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -22 predicate places. [2024-10-14 19:55:14,040 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 150 flow [2024-10-14 19:55:14,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:14,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:14,041 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-10-14 19:55:14,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-14 19:55:14,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:14,245 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-10-14 19:55:14,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:14,246 INFO L85 PathProgramCache]: Analyzing trace with hash 613802819, now seen corresponding path program 1 times [2024-10-14 19:55:14,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:14,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278446171] [2024-10-14 19:55:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:14,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:14,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:14,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:14,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-14 19:55:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:14,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-14 19:55:14,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:14,341 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 [2024-10-14 19:55:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:14,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:14,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:14,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:14,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278446171] [2024-10-14 19:55:14,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278446171] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:14,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:14,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-10-14 19:55:14,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471596313] [2024-10-14 19:55:14,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:14,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 19:55:14,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 19:55:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 19:55:14,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 84 [2024-10-14 19:55:14,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 150 flow. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:14,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:14,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 84 [2024-10-14 19:55:14,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:23,354 INFO L124 PetriNetUnfolderBase]: 88312/115439 cut-off events. [2024-10-14 19:55:23,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:55:23,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226647 conditions, 115439 events. 88312/115439 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6403. Compared 799830 event pairs, 65243 based on Foata normal form. 0/73909 useless extension candidates. Maximal degree in co-relation 226634. Up to 107692 conditions per place. [2024-10-14 19:55:24,116 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 50 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2024-10-14 19:55:24,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 74 transitions, 304 flow [2024-10-14 19:55:24,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-14 19:55:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-14 19:55:24,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-10-14 19:55:24,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32275132275132273 [2024-10-14 19:55:24,120 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 150 flow. Second operand 9 states and 244 transitions. [2024-10-14 19:55:24,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 74 transitions, 304 flow [2024-10-14 19:55:24,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 74 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:55:24,123 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 222 flow [2024-10-14 19:55:24,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2024-10-14 19:55:24,125 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -12 predicate places. [2024-10-14 19:55:24,125 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 222 flow [2024-10-14 19:55:24,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:24,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:24,125 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:24,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-14 19:55:24,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:24,327 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-10-14 19:55:24,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1454093948, now seen corresponding path program 1 times [2024-10-14 19:55:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:24,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251814662] [2024-10-14 19:55:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:24,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:24,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:24,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:24,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-14 19:55:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:24,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 19:55:24,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:24,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:55:24,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-10-14 19:55:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:55:24,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:24,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251814662] [2024-10-14 19:55:24,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251814662] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:55:24,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-14 19:55:24,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-10-14 19:55:24,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156360732] [2024-10-14 19:55:24,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-14 19:55:24,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 19:55:24,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:24,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 19:55:24,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-14 19:55:24,662 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 84 [2024-10-14 19:55:24,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 222 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:24,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:24,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 84 [2024-10-14 19:55:24,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:30,220 INFO L124 PetriNetUnfolderBase]: 71315/92952 cut-off events. [2024-10-14 19:55:30,220 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 19:55:30,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182470 conditions, 92952 events. 71315/92952 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5285. Compared 628211 event pairs, 51365 based on Foata normal form. 0/61263 useless extension candidates. Maximal degree in co-relation 182439. Up to 86707 conditions per place. [2024-10-14 19:55:31,024 INFO L140 encePairwiseOnDemand]: 79/84 looper letters, 51 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-10-14 19:55:31,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 72 transitions, 334 flow [2024-10-14 19:55:31,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 19:55:31,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-14 19:55:31,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-10-14 19:55:31,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-10-14 19:55:31,026 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 222 flow. Second operand 6 states and 180 transitions. [2024-10-14 19:55:31,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 72 transitions, 334 flow [2024-10-14 19:55:31,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 72 transitions, 320 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-14 19:55:31,029 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 218 flow [2024-10-14 19:55:31,030 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2024-10-14 19:55:31,030 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -10 predicate places. [2024-10-14 19:55:31,031 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 218 flow [2024-10-14 19:55:31,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:31,031 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:31,031 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:31,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-14 19:55:31,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:31,232 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-10-14 19:55:31,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:31,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1454093947, now seen corresponding path program 1 times [2024-10-14 19:55:31,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:31,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475185635] [2024-10-14 19:55:31,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:31,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:31,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:31,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:31,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-14 19:55:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:31,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-14 19:55:31,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:31,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-14 19:55:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:31,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:31,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:31,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475185635] [2024-10-14 19:55:31,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475185635] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:31,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:31,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:55:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71219270] [2024-10-14 19:55:31,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:31,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:55:31,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:31,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:55:31,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:55:31,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 84 [2024-10-14 19:55:31,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:31,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:31,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 84 [2024-10-14 19:55:31,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:55:33,703 INFO L124 PetriNetUnfolderBase]: 28001/36843 cut-off events. [2024-10-14 19:55:33,703 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 19:55:33,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72220 conditions, 36843 events. 28001/36843 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 2038. Compared 228423 event pairs, 19647 based on Foata normal form. 0/29218 useless extension candidates. Maximal degree in co-relation 72188. Up to 34203 conditions per place. [2024-10-14 19:55:34,181 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 47 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-10-14 19:55:34,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 66 transitions, 310 flow [2024-10-14 19:55:34,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 19:55:34,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-14 19:55:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-10-14 19:55:34,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37797619047619047 [2024-10-14 19:55:34,182 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 218 flow. Second operand 4 states and 127 transitions. [2024-10-14 19:55:34,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 66 transitions, 310 flow [2024-10-14 19:55:34,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-14 19:55:34,184 INFO L231 Difference]: Finished difference. Result has 73 places, 66 transitions, 210 flow [2024-10-14 19:55:34,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=73, PETRI_TRANSITIONS=66} [2024-10-14 19:55:34,185 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -16 predicate places. [2024-10-14 19:55:34,186 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 66 transitions, 210 flow [2024-10-14 19:55:34,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:34,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:55:34,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 19:55:34,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-14 19:55:34,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:34,387 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-10-14 19:55:34,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:55:34,388 INFO L85 PathProgramCache]: Analyzing trace with hash 368435137, now seen corresponding path program 1 times [2024-10-14 19:55:34,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 19:55:34,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340088644] [2024-10-14 19:55:34,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:55:34,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-14 19:55:34,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 19:55:34,390 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-14 19:55:34,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-14 19:55:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:55:34,463 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 19:55:34,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:55:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 19:55:34,547 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 19:55:34,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 19:55:34,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340088644] [2024-10-14 19:55:34,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340088644] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:55:34,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:55:34,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 19:55:34,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513760066] [2024-10-14 19:55:34,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:55:34,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:55:34,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 19:55:34,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:55:34,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:55:34,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 84 [2024-10-14 19:55:34,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 66 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:55:34,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:55:34,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 84 [2024-10-14 19:55:34,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand