./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/fillarray.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version eb692b52 Calling Ultimate with: /usr/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 ../sv-benchmarks/c/pthread-memsafety/fillarray.i -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.graphml --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 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 06:33:43,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:33:43,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:33:43,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:33:43,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:33:43,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:33:43,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:33:43,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:33:43,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:33:43,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:33:43,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:33:43,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:33:43,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:33:43,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:33:43,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:33:43,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:33:43,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:33:43,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:33:43,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:33:43,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:33:43,720 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:33:43,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:33:43,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:33:43,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:33:43,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:33:43,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:33:43,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:33:43,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:33:43,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:33:43,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:33:43,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:33:43,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:33:43,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:33:43,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:33:43,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:33:43,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:33:43,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:33:43,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:33:43,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:33:43,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:33:43,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:33:43,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:33:43,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-20 06:33:43,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:33:43,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:33:43,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:33:43,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:33:43,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:33:43,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:33:43,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:33:43,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:33:43,764 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:33:43,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:33:43,764 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:33:43,765 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:33:43,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:33:43,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:33:43,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:33:43,765 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:33:43,765 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:33:43,766 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:33:43,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:33:43,766 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:33:43,766 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:33:43,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:33:43,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:33:43,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:33:43,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:33:43,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:33:43,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:33:43,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:33:43,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 06:33:43,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 06:33:43,768 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2022-07-20 06:33:43,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:33:43,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:33:43,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:33:43,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:33:43,972 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:33:43,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2022-07-20 06:33:44,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0fed682/1d1d0f8fdba5498b86121da29a52336e/FLAGe5d981c4e [2022-07-20 06:33:44,463 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:33:44,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2022-07-20 06:33:44,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0fed682/1d1d0f8fdba5498b86121da29a52336e/FLAGe5d981c4e [2022-07-20 06:33:44,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe0fed682/1d1d0f8fdba5498b86121da29a52336e [2022-07-20 06:33:44,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:33:44,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:33:44,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:33:44,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:33:44,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:33:44,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:33:44" (1/1) ... [2022-07-20 06:33:44,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359de3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:44, skipping insertion in model container [2022-07-20 06:33:44,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:33:44" (1/1) ... [2022-07-20 06:33:44,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:33:44,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:33:44,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:33:44,822 ERROR L326 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) [2022-07-20 06:33:44,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b78ff03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:44, skipping insertion in model container [2022-07-20 06:33:44,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:33:44,823 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-20 06:33:44,824 INFO L158 Benchmark]: Toolchain (without parser) took 335.78ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 89.0MB in the end (delta: 167.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-20 06:33:44,824 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:33:44,825 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.37ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 89.0MB in the end (delta: 167.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-20 06:33:44,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.37ms. Allocated memory is still 117.4MB. Free memory was 89.2MB in the beginning and 89.0MB in the end (delta: 167.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1041]: 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: /usr/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 ../sv-benchmarks/c/pthread-memsafety/fillarray.i -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.graphml --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 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 06:33:46,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 06:33:46,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 06:33:46,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 06:33:46,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 06:33:46,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 06:33:46,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 06:33:46,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 06:33:46,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 06:33:46,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 06:33:46,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 06:33:46,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 06:33:46,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 06:33:46,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 06:33:46,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 06:33:46,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 06:33:46,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 06:33:46,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 06:33:46,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 06:33:46,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 06:33:46,426 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 06:33:46,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 06:33:46,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 06:33:46,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 06:33:46,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 06:33:46,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 06:33:46,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 06:33:46,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 06:33:46,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 06:33:46,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 06:33:46,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 06:33:46,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 06:33:46,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 06:33:46,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 06:33:46,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 06:33:46,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 06:33:46,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 06:33:46,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 06:33:46,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 06:33:46,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 06:33:46,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 06:33:46,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 06:33:46,455 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-20 06:33:46,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 06:33:46,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 06:33:46,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 06:33:46,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 06:33:46,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 06:33:46,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 06:33:46,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 06:33:46,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 06:33:46,477 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 06:33:46,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 06:33:46,478 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 06:33:46,478 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-20 06:33:46,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 06:33:46,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 06:33:46,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 06:33:46,479 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-20 06:33:46,479 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-20 06:33:46,479 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-20 06:33:46,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 06:33:46,480 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 06:33:46,480 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 06:33:46,480 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 06:33:46,480 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 06:33:46,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 06:33:46,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 06:33:46,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 06:33:46,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 06:33:46,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:33:46,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 06:33:46,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 06:33:46,481 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 06:33:46,481 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 06:33:46,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 06:33:46,482 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 042c5199cb977bee0e9fb33f98d35f27e793036e412b430f7152f110aa730c52 [2022-07-20 06:33:46,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 06:33:46,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 06:33:46,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 06:33:46,755 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 06:33:46,756 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 06:33:46,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/fillarray.i [2022-07-20 06:33:46,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d72200c2/ff398e9c87214ad2a3c70215480f770b/FLAG564e3c404 [2022-07-20 06:33:47,196 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 06:33:47,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/fillarray.i [2022-07-20 06:33:47,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d72200c2/ff398e9c87214ad2a3c70215480f770b/FLAG564e3c404 [2022-07-20 06:33:47,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d72200c2/ff398e9c87214ad2a3c70215480f770b [2022-07-20 06:33:47,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 06:33:47,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 06:33:47,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 06:33:47,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 06:33:47,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 06:33:47,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:33:47" (1/1) ... [2022-07-20 06:33:47,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77dc7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:47, skipping insertion in model container [2022-07-20 06:33:47,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 06:33:47" (1/1) ... [2022-07-20 06:33:47,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 06:33:47,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:33:47,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:33:47,924 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 06:33:47,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 06:33:47,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:33:47,965 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 06:33:47,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 06:33:48,053 INFO L208 MainTranslator]: Completed translation [2022-07-20 06:33:48,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48 WrapperNode [2022-07-20 06:33:48,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 06:33:48,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 06:33:48,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 06:33:48,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 06:33:48,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (1/1) ... [2022-07-20 06:33:48,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (1/1) ... [2022-07-20 06:33:48,104 INFO L137 Inliner]: procedures = 263, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2022-07-20 06:33:48,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 06:33:48,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 06:33:48,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 06:33:48,105 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 06:33:48,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (1/1) ... [2022-07-20 06:33:48,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (1/1) ... [2022-07-20 06:33:48,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (1/1) ... [2022-07-20 06:33:48,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (1/1) ... [2022-07-20 06:33:48,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (1/1) ... [2022-07-20 06:33:48,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (1/1) ... [2022-07-20 06:33:48,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (1/1) ... [2022-07-20 06:33:48,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 06:33:48,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 06:33:48,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 06:33:48,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 06:33:48,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (1/1) ... [2022-07-20 06:33:48,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 06:33:48,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 06:33:48,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-20 06:33:48,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-20 06:33:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-07-20 06:33:48,183 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-07-20 06:33:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-07-20 06:33:48,183 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-07-20 06:33:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 06:33:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 06:33:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 06:33:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 06:33:48,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 06:33:48,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 06:33:48,184 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-20 06:33:48,283 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 06:33:48,284 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 06:33:48,525 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 06:33:48,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 06:33:48,530 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-20 06:33:48,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:33:48 BoogieIcfgContainer [2022-07-20 06:33:48,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 06:33:48,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 06:33:48,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 06:33:48,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 06:33:48,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 06:33:47" (1/3) ... [2022-07-20 06:33:48,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234061d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:33:48, skipping insertion in model container [2022-07-20 06:33:48,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 06:33:48" (2/3) ... [2022-07-20 06:33:48,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234061d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 06:33:48, skipping insertion in model container [2022-07-20 06:33:48,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:33:48" (3/3) ... [2022-07-20 06:33:48,537 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray.i [2022-07-20 06:33:48,546 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 06:33:48,546 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-07-20 06:33:48,547 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-20 06:33:48,606 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-20 06:33:48,637 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-20 06:33:48,647 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 90 transitions, 190 flow [2022-07-20 06:33:48,650 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 90 transitions, 190 flow [2022-07-20 06:33:48,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 90 transitions, 190 flow [2022-07-20 06:33:48,694 INFO L129 PetriNetUnfolder]: 4/94 cut-off events. [2022-07-20 06:33:48,694 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-20 06:33:48,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 4/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2022-07-20 06:33:48,700 INFO L116 LiptonReduction]: Number of co-enabled transitions 1586 [2022-07-20 06:33:54,141 INFO L131 LiptonReduction]: Checked pairs total: 4267 [2022-07-20 06:33:54,141 INFO L133 LiptonReduction]: Total number of compositions: 82 [2022-07-20 06:33:54,146 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 80 flow [2022-07-20 06:33:54,192 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 613 states, 560 states have (on average 3.0910714285714285) internal successors, (1731), 612 states have internal predecessors, (1731), 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) [2022-07-20 06:33:54,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 06:33:54,210 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5870ed33, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d099087 [2022-07-20 06:33:54,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-07-20 06:33:54,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 613 states, 560 states have (on average 3.0910714285714285) internal successors, (1731), 612 states have internal predecessors, (1731), 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) [2022-07-20 06:33:54,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-07-20 06:33:54,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:33:54,218 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-07-20 06:33:54,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-20 06:33:54,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:33:54,222 INFO L85 PathProgramCache]: Analyzing trace with hash 339, now seen corresponding path program 1 times [2022-07-20 06:33:54,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:33:54,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338604604] [2022-07-20 06:33:54,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:33:54,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:33:54,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:33:54,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:33:54,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 06:33:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:33:54,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-20 06:33:54,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:33:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:33:54,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:33:54,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:33:54,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338604604] [2022-07-20 06:33:54,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338604604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:33:54,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:33:54,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-07-20 06:33:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006363933] [2022-07-20 06:33:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:33:54,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 06:33:54,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:33:54,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 06:33:54,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 06:33:54,318 INFO L87 Difference]: Start difference. First operand has 613 states, 560 states have (on average 3.0910714285714285) internal successors, (1731), 612 states have internal predecessors, (1731), 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-07-20 06:33:54,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:33:54,460 INFO L93 Difference]: Finished difference Result 611 states and 1729 transitions. [2022-07-20 06:33:54,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 06:33:54,463 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) Word has length 1 [2022-07-20 06:33:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:33:54,475 INFO L225 Difference]: With dead ends: 611 [2022-07-20 06:33:54,475 INFO L226 Difference]: Without dead ends: 611 [2022-07-20 06:33:54,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 06:33:54,478 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:33:54,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:33:54,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-07-20 06:33:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2022-07-20 06:33:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 560 states have (on average 3.0875) internal successors, (1729), 610 states have internal predecessors, (1729), 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) [2022-07-20 06:33:54,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1729 transitions. [2022-07-20 06:33:54,532 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1729 transitions. Word has length 1 [2022-07-20 06:33:54,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:33:54,533 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1729 transitions. [2022-07-20 06:33:54,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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) [2022-07-20 06:33:54,533 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1729 transitions. [2022-07-20 06:33:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-07-20 06:33:54,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:33:54,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-07-20 06:33:54,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-20 06:33:54,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:33:54,744 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-20 06:33:54,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:33:54,745 INFO L85 PathProgramCache]: Analyzing trace with hash 10627, now seen corresponding path program 1 times [2022-07-20 06:33:54,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:33:54,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983335764] [2022-07-20 06:33:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:33:54,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:33:54,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:33:54,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:33:54,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 06:33:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:33:54,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 06:33:54,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:33:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:33:54,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:33:54,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:33:54,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983335764] [2022-07-20 06:33:54,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983335764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:33:54,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:33:54,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-20 06:33:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033311149] [2022-07-20 06:33:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:33:54,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:33:54,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:33:54,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:33:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:54,830 INFO L87 Difference]: Start difference. First operand 611 states and 1729 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-07-20 06:33:54,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:33:54,963 INFO L93 Difference]: Finished difference Result 610 states and 1728 transitions. [2022-07-20 06:33:54,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:33:54,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2022-07-20 06:33:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:33:54,967 INFO L225 Difference]: With dead ends: 610 [2022-07-20 06:33:54,967 INFO L226 Difference]: Without dead ends: 609 [2022-07-20 06:33:54,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:54,968 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:33:54,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 21 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:33:54,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-07-20 06:33:54,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2022-07-20 06:33:54,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 559 states have (on average 3.0894454382826475) internal successors, (1727), 608 states have internal predecessors, (1727), 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) [2022-07-20 06:33:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1727 transitions. [2022-07-20 06:33:54,995 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1727 transitions. Word has length 2 [2022-07-20 06:33:54,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:33:54,995 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 1727 transitions. [2022-07-20 06:33:54,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-07-20 06:33:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1727 transitions. [2022-07-20 06:33:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-20 06:33:54,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:33:54,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-20 06:33:55,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 06:33:55,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:33:55,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-20 06:33:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:33:55,204 INFO L85 PathProgramCache]: Analyzing trace with hash 334037, now seen corresponding path program 1 times [2022-07-20 06:33:55,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:33:55,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596250412] [2022-07-20 06:33:55,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:33:55,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:33:55,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:33:55,205 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:33:55,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 06:33:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:33:55,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 06:33:55,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:33:55,303 INFO L356 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2022-07-20 06:33:55,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-07-20 06:33:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:33:55,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:33:55,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:33:55,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596250412] [2022-07-20 06:33:55,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596250412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:33:55,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:33:55,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-20 06:33:55,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041580709] [2022-07-20 06:33:55,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:33:55,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:33:55,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:33:55,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:33:55,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:55,319 INFO L87 Difference]: Start difference. First operand 609 states and 1727 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-07-20 06:33:55,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:33:55,389 INFO L93 Difference]: Finished difference Result 601 states and 1711 transitions. [2022-07-20 06:33:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:33:55,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2022-07-20 06:33:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:33:55,393 INFO L225 Difference]: With dead ends: 601 [2022-07-20 06:33:55,393 INFO L226 Difference]: Without dead ends: 601 [2022-07-20 06:33:55,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:55,394 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:33:55,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 13 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:33:55,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-07-20 06:33:55,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2022-07-20 06:33:55,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 554 states have (on average 3.088447653429603) internal successors, (1711), 600 states have internal predecessors, (1711), 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) [2022-07-20 06:33:55,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1711 transitions. [2022-07-20 06:33:55,408 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1711 transitions. Word has length 3 [2022-07-20 06:33:55,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:33:55,408 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 1711 transitions. [2022-07-20 06:33:55,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-07-20 06:33:55,408 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1711 transitions. [2022-07-20 06:33:55,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-20 06:33:55,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:33:55,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-20 06:33:55,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-20 06:33:55,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:33:55,616 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-20 06:33:55,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:33:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash 334039, now seen corresponding path program 1 times [2022-07-20 06:33:55,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:33:55,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383768267] [2022-07-20 06:33:55,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:33:55,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:33:55,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:33:55,618 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:33:55,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 06:33:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:33:55,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 06:33:55,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:33:55,701 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-07-20 06:33:55,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-07-20 06:33:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:33:55,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:33:55,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:33:55,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383768267] [2022-07-20 06:33:55,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383768267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:33:55,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:33:55,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-20 06:33:55,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613853530] [2022-07-20 06:33:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:33:55,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:33:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:33:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:33:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:55,725 INFO L87 Difference]: Start difference. First operand 601 states and 1711 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-07-20 06:33:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:33:55,814 INFO L93 Difference]: Finished difference Result 593 states and 1695 transitions. [2022-07-20 06:33:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:33:55,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2022-07-20 06:33:55,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:33:55,818 INFO L225 Difference]: With dead ends: 593 [2022-07-20 06:33:55,818 INFO L226 Difference]: Without dead ends: 593 [2022-07-20 06:33:55,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:55,819 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 23 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:33:55,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 14 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:33:55,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-07-20 06:33:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2022-07-20 06:33:55,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 549 states have (on average 3.087431693989071) internal successors, (1695), 592 states have internal predecessors, (1695), 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) [2022-07-20 06:33:55,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1695 transitions. [2022-07-20 06:33:55,832 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1695 transitions. Word has length 3 [2022-07-20 06:33:55,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:33:55,832 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 1695 transitions. [2022-07-20 06:33:55,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-07-20 06:33:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1695 transitions. [2022-07-20 06:33:55,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-20 06:33:55,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:33:55,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-20 06:33:55,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 06:33:56,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:33:56,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-20 06:33:56,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:33:56,041 INFO L85 PathProgramCache]: Analyzing trace with hash 321017885, now seen corresponding path program 1 times [2022-07-20 06:33:56,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:33:56,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223011223] [2022-07-20 06:33:56,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:33:56,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:33:56,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:33:56,042 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:33:56,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 06:33:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:33:56,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 06:33:56,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:33:56,132 INFO L356 Elim1Store]: treesize reduction 39, result has 29.1 percent of original size [2022-07-20 06:33:56,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 24 treesize of output 30 [2022-07-20 06:33:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:33:56,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:33:56,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:33:56,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223011223] [2022-07-20 06:33:56,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223011223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:33:56,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:33:56,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-20 06:33:56,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569010897] [2022-07-20 06:33:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:33:56,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:33:56,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:33:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:33:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:56,203 INFO L87 Difference]: Start difference. First operand 593 states and 1695 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-07-20 06:33:56,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:33:56,229 INFO L93 Difference]: Finished difference Result 592 states and 1692 transitions. [2022-07-20 06:33:56,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:33:56,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2022-07-20 06:33:56,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:33:56,232 INFO L225 Difference]: With dead ends: 592 [2022-07-20 06:33:56,232 INFO L226 Difference]: Without dead ends: 592 [2022-07-20 06:33:56,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:56,234 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:33:56,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2022-07-20 06:33:56,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-07-20 06:33:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2022-07-20 06:33:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 548 states have (on average 3.0875912408759123) internal successors, (1692), 591 states have internal predecessors, (1692), 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) [2022-07-20 06:33:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1692 transitions. [2022-07-20 06:33:56,249 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1692 transitions. Word has length 5 [2022-07-20 06:33:56,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:33:56,250 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 1692 transitions. [2022-07-20 06:33:56,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-07-20 06:33:56,250 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1692 transitions. [2022-07-20 06:33:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-20 06:33:56,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:33:56,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-20 06:33:56,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 06:33:56,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:33:56,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-20 06:33:56,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:33:56,464 INFO L85 PathProgramCache]: Analyzing trace with hash 321017871, now seen corresponding path program 1 times [2022-07-20 06:33:56,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:33:56,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886112659] [2022-07-20 06:33:56,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:33:56,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:33:56,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:33:56,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:33:56,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 06:33:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:33:56,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 06:33:56,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:33:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:33:56,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:33:56,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:33:56,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886112659] [2022-07-20 06:33:56,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886112659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:33:56,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:33:56,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-20 06:33:56,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648022019] [2022-07-20 06:33:56,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:33:56,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:33:56,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:33:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:33:56,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:56,539 INFO L87 Difference]: Start difference. First operand 592 states and 1692 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-07-20 06:33:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:33:56,585 INFO L93 Difference]: Finished difference Result 528 states and 1500 transitions. [2022-07-20 06:33:56,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:33:56,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2022-07-20 06:33:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:33:56,592 INFO L225 Difference]: With dead ends: 528 [2022-07-20 06:33:56,592 INFO L226 Difference]: Without dead ends: 528 [2022-07-20 06:33:56,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:56,593 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:33:56,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 9 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:33:56,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2022-07-20 06:33:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2022-07-20 06:33:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 493 states have (on average 3.0425963488843815) internal successors, (1500), 527 states have internal predecessors, (1500), 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) [2022-07-20 06:33:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1500 transitions. [2022-07-20 06:33:56,603 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1500 transitions. Word has length 5 [2022-07-20 06:33:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:33:56,604 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 1500 transitions. [2022-07-20 06:33:56,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-07-20 06:33:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1500 transitions. [2022-07-20 06:33:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-20 06:33:56,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:33:56,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-20 06:33:56,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 06:33:56,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:33:56,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-20 06:33:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:33:56,811 INFO L85 PathProgramCache]: Analyzing trace with hash 321017872, now seen corresponding path program 1 times [2022-07-20 06:33:56,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:33:56,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952950082] [2022-07-20 06:33:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:33:56,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:33:56,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:33:56,813 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:33:56,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 06:33:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:33:56,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 06:33:56,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:33:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:33:56,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:33:56,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:33:56,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952950082] [2022-07-20 06:33:56,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952950082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:33:56,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:33:56,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-20 06:33:56,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100286564] [2022-07-20 06:33:56,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:33:56,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:33:56,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:33:56,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:33:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:56,884 INFO L87 Difference]: Start difference. First operand 528 states and 1500 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-07-20 06:33:56,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:33:56,919 INFO L93 Difference]: Finished difference Result 464 states and 1308 transitions. [2022-07-20 06:33:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:33:56,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2022-07-20 06:33:56,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:33:56,921 INFO L225 Difference]: With dead ends: 464 [2022-07-20 06:33:56,921 INFO L226 Difference]: Without dead ends: 464 [2022-07-20 06:33:56,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:56,922 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 06:33:56,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 9 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 06:33:56,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-07-20 06:33:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2022-07-20 06:33:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 438 states have (on average 2.9863013698630136) internal successors, (1308), 463 states have internal predecessors, (1308), 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) [2022-07-20 06:33:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1308 transitions. [2022-07-20 06:33:56,931 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1308 transitions. Word has length 5 [2022-07-20 06:33:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:33:56,931 INFO L495 AbstractCegarLoop]: Abstraction has 464 states and 1308 transitions. [2022-07-20 06:33:56,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-07-20 06:33:56,932 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1308 transitions. [2022-07-20 06:33:56,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-20 06:33:56,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:33:56,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-20 06:33:56,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-20 06:33:57,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:33:57,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-20 06:33:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:33:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1361619026, now seen corresponding path program 1 times [2022-07-20 06:33:57,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:33:57,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177148414] [2022-07-20 06:33:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:33:57,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:33:57,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:33:57,143 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:33:57,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 06:33:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 06:33:57,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 06:33:57,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 06:33:57,223 INFO L356 Elim1Store]: treesize reduction 35, result has 36.4 percent of original size [2022-07-20 06:33:57,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 24 treesize of output 34 [2022-07-20 06:33:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 06:33:57,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 06:33:57,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 06:33:57,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177148414] [2022-07-20 06:33:57,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177148414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 06:33:57,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 06:33:57,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-20 06:33:57,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050055700] [2022-07-20 06:33:57,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 06:33:57,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 06:33:57,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 06:33:57,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 06:33:57,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:57,244 INFO L87 Difference]: Start difference. First operand 464 states and 1308 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-20 06:33:57,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 06:33:57,315 INFO L93 Difference]: Finished difference Result 401 states and 1119 transitions. [2022-07-20 06:33:57,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 06:33:57,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2022-07-20 06:33:57,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 06:33:57,318 INFO L225 Difference]: With dead ends: 401 [2022-07-20 06:33:57,318 INFO L226 Difference]: Without dead ends: 401 [2022-07-20 06:33:57,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 06:33:57,318 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 06:33:57,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 13 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 06:33:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-07-20 06:33:57,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2022-07-20 06:33:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 384 states have (on average 2.9140625) internal successors, (1119), 400 states have internal predecessors, (1119), 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) [2022-07-20 06:33:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1119 transitions. [2022-07-20 06:33:57,326 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1119 transitions. Word has length 6 [2022-07-20 06:33:57,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 06:33:57,327 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 1119 transitions. [2022-07-20 06:33:57,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-20 06:33:57,327 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1119 transitions. [2022-07-20 06:33:57,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-20 06:33:57,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 06:33:57,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:33:57,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 06:33:57,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:33:57,535 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2022-07-20 06:33:57,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 06:33:57,535 INFO L85 PathProgramCache]: Analyzing trace with hash -766144858, now seen corresponding path program 1 times [2022-07-20 06:33:57,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 06:33:57,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809336806] [2022-07-20 06:33:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 06:33:57,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 06:33:57,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 06:33:57,537 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 06:33:57,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 06:33:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 06:33:57,612 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-20 06:33:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 06:33:57,648 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-20 06:33:57,648 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-20 06:33:57,649 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 18 remaining) [2022-07-20 06:33:57,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2022-07-20 06:33:57,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2022-07-20 06:33:57,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2022-07-20 06:33:57,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2022-07-20 06:33:57,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2022-07-20 06:33:57,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (11 of 18 remaining) [2022-07-20 06:33:57,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (10 of 18 remaining) [2022-07-20 06:33:57,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE (9 of 18 remaining) [2022-07-20 06:33:57,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 18 remaining) [2022-07-20 06:33:57,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 18 remaining) [2022-07-20 06:33:57,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2022-07-20 06:33:57,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2022-07-20 06:33:57,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2022-07-20 06:33:57,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2022-07-20 06:33:57,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2022-07-20 06:33:57,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2022-07-20 06:33:57,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2022-07-20 06:33:57,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 06:33:57,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 06:33:57,855 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 06:33:57,858 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-20 06:33:57,858 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 06:33:57,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 06:33:57 BasicIcfg [2022-07-20 06:33:57,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 06:33:57,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 06:33:57,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 06:33:57,890 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 06:33:57,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 06:33:48" (3/4) ... [2022-07-20 06:33:57,891 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-20 06:33:57,915 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-20 06:33:57,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 06:33:57,916 INFO L158 Benchmark]: Toolchain (without parser) took 10366.81ms. Allocated memory was 65.0MB in the beginning and 100.7MB in the end (delta: 35.7MB). Free memory was 39.3MB in the beginning and 67.1MB in the end (delta: -27.8MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-07-20 06:33:57,916 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory was 27.6MB in the beginning and 27.6MB in the end (delta: 31.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 06:33:57,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.25ms. Allocated memory is still 65.0MB. Free memory was 39.1MB in the beginning and 43.0MB in the end (delta: -3.9MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2022-07-20 06:33:57,917 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.47ms. Allocated memory is still 65.0MB. Free memory was 43.0MB in the beginning and 40.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 06:33:57,917 INFO L158 Benchmark]: Boogie Preprocessor took 20.67ms. Allocated memory is still 65.0MB. Free memory was 40.7MB in the beginning and 38.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 06:33:57,917 INFO L158 Benchmark]: RCFGBuilder took 405.68ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 38.9MB in the beginning and 62.4MB in the end (delta: -23.5MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-07-20 06:33:57,917 INFO L158 Benchmark]: TraceAbstraction took 9356.29ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 61.9MB in the beginning and 70.1MB in the end (delta: -8.2MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-07-20 06:33:57,918 INFO L158 Benchmark]: Witness Printer took 26.10ms. Allocated memory is still 100.7MB. Free memory was 70.1MB in the beginning and 67.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-20 06:33:57,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory was 27.6MB in the beginning and 27.6MB in the end (delta: 31.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 504.25ms. Allocated memory is still 65.0MB. Free memory was 39.1MB in the beginning and 43.0MB in the end (delta: -3.9MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.47ms. Allocated memory is still 65.0MB. Free memory was 43.0MB in the beginning and 40.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.67ms. Allocated memory is still 65.0MB. Free memory was 40.7MB in the beginning and 38.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 405.68ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 38.9MB in the beginning and 62.4MB in the end (delta: -23.5MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9356.29ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 61.9MB in the beginning and 70.1MB in the end (delta: -8.2MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Witness Printer took 26.10ms. Allocated memory is still 100.7MB. Free memory was 70.1MB in the beginning and 67.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 92 PlacesBefore, 39 PlacesAfterwards, 90 TransitionsBefore, 35 TransitionsAfterwards, 1586 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4267 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1997, positive: 1827, positive conditional: 0, positive unconditional: 1827, negative: 170, negative conditional: 0, negative unconditional: 170, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 917, positive: 879, positive conditional: 0, positive unconditional: 879, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 917, positive: 873, positive conditional: 0, positive unconditional: 873, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 291, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 273, negative conditional: 0, negative unconditional: 273, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1997, positive: 948, positive conditional: 0, positive unconditional: 948, negative: 132, negative conditional: 0, negative unconditional: 132, unknown: 917, unknown conditional: 0, unknown unconditional: 917] , Statistics on independence cache: Total cache size (in pairs): 168, Positive cache size: 148, Positive conditional cache size: 0, Positive unconditional cache size: 148, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1057] 0 size = __VERIFIER_nondet_int() [L1058] COND FALSE 0 !(size < 1 || size > 20) [L1061] 0 int *a = (int *)malloc(size); [L1062] 0 pthread_t id1, id2; [L1063] 0 ind = 0 [L1064] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [\old(argc)=5, a={1:0}, arg={1:0}, argc=5, argv={9:6}, argv={9:6}, i=1, id1={15:0}, id2={7:0}, ind=0, j=2, pthread_create(&id1, ((void *)0), t1, a)=0, size=2] [L1041] 1 int *a = (int *)arg; VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 VAL [a={1:0}, arg={1:0}, arg={1:0}, i=1, ind=0, j=2, size=2] [L1043] 1 ++ind [L1044] 1 a[ind] = i - UnprovableResult [Line: 1056]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1066]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1065]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1064]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 121 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 121 mSDsluCounter, 103 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 226 IncrementalHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 72 mSDtfsCounter, 226 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=613occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 22 ConstructedInterpolants, 4 QuantifiedInterpolants, 188 SizeOfPredicates, 8 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-20 06:33:57,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)