./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6c24879c 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/memsafety-ext3/naturalNumbers1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 19:27:22,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 19:27:22,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 19:27:22,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 19:27:22,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 19:27:22,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 19:27:22,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 19:27:22,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 19:27:22,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 19:27:22,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 19:27:22,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 19:27:22,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 19:27:22,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 19:27:22,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 19:27:22,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 19:27:22,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 19:27:22,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 19:27:22,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 19:27:22,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 19:27:22,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 19:27:22,473 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 19:27:22,474 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 19:27:22,475 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 19:27:22,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 19:27:22,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 19:27:22,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 19:27:22,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 19:27:22,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 19:27:22,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 19:27:22,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 19:27:22,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 19:27:22,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 19:27:22,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 19:27:22,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 19:27:22,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 19:27:22,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 19:27:22,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 19:27:22,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 19:27:22,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 19:27:22,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 19:27:22,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 19:27:22,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 19:27:22,486 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-12 19:27:22,508 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 19:27:22,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 19:27:22,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 19:27:22,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 19:27:22,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 19:27:22,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 19:27:22,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 19:27:22,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 19:27:22,511 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 19:27:22,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 19:27:22,512 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 19:27:22,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 19:27:22,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 19:27:22,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 19:27:22,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 19:27:22,512 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 19:27:22,512 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 19:27:22,512 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 19:27:22,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 19:27:22,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 19:27:22,513 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 19:27:22,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 19:27:22,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 19:27:22,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 19:27:22,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 19:27:22,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 19:27:22,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 19:27:22,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 19:27:22,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 19:27:22,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 19:27:22,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2022-07-12 19:27:22,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 19:27:22,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 19:27:22,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 19:27:22,725 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 19:27:22,726 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 19:27:22,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-07-12 19:27:22,805 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b177a224/363d445ce3074d208643677dd96e5695/FLAGdfb461bfa [2022-07-12 19:27:23,145 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 19:27:23,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-07-12 19:27:23,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b177a224/363d445ce3074d208643677dd96e5695/FLAGdfb461bfa [2022-07-12 19:27:23,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b177a224/363d445ce3074d208643677dd96e5695 [2022-07-12 19:27:23,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 19:27:23,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 19:27:23,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 19:27:23,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 19:27:23,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 19:27:23,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:27:23" (1/1) ... [2022-07-12 19:27:23,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52cf00a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:23, skipping insertion in model container [2022-07-12 19:27:23,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:27:23" (1/1) ... [2022-07-12 19:27:23,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 19:27:23,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 19:27:23,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 19:27:23,774 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) [2022-07-12 19:27:23,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51d9ec3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:23, skipping insertion in model container [2022-07-12 19:27:23,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 19:27:23,777 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-12 19:27:23,779 INFO L158 Benchmark]: Toolchain (without parser) took 187.71ms. Allocated memory is still 130.0MB. Free memory was 95.6MB in the beginning and 105.2MB in the end (delta: -9.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2022-07-12 19:27:23,780 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory was 37.0MB in the beginning and 37.0MB in the end (delta: 37.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 19:27:23,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.99ms. Allocated memory is still 130.0MB. Free memory was 95.3MB in the beginning and 105.2MB in the end (delta: -9.9MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2022-07-12 19:27:23,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 77.6MB. Free memory was 37.0MB in the beginning and 37.0MB in the end (delta: 37.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.99ms. Allocated memory is still 130.0MB. Free memory was 95.3MB in the beginning and 105.2MB in the end (delta: -9.9MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: 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/memsafety-ext3/naturalNumbers1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 19:27:25,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 19:27:25,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 19:27:25,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 19:27:25,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 19:27:25,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 19:27:25,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 19:27:25,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 19:27:25,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 19:27:25,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 19:27:25,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 19:27:25,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 19:27:25,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 19:27:25,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 19:27:25,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 19:27:25,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 19:27:25,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 19:27:25,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 19:27:25,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 19:27:25,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 19:27:25,639 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 19:27:25,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 19:27:25,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 19:27:25,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 19:27:25,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 19:27:25,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 19:27:25,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 19:27:25,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 19:27:25,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 19:27:25,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 19:27:25,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 19:27:25,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 19:27:25,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 19:27:25,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 19:27:25,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 19:27:25,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 19:27:25,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 19:27:25,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 19:27:25,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 19:27:25,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 19:27:25,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 19:27:25,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 19:27:25,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-12 19:27:25,690 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 19:27:25,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 19:27:25,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 19:27:25,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 19:27:25,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 19:27:25,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 19:27:25,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 19:27:25,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 19:27:25,692 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 19:27:25,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 19:27:25,693 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 19:27:25,693 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 19:27:25,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 19:27:25,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 19:27:25,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 19:27:25,694 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 19:27:25,694 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 19:27:25,695 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 19:27:25,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 19:27:25,695 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 19:27:25,695 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 19:27:25,695 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 19:27:25,695 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 19:27:25,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 19:27:25,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 19:27:25,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 19:27:25,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 19:27:25,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 19:27:25,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 19:27:25,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 19:27:25,697 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 19:27:25,697 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 19:27:25,697 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 19:27:25,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2022-07-12 19:27:25,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 19:27:26,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 19:27:26,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 19:27:26,008 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 19:27:26,019 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 19:27:26,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-07-12 19:27:26,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5673842/858de4876a694b1692913ed2dee05f5b/FLAG9c0f130fc [2022-07-12 19:27:26,423 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 19:27:26,424 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2022-07-12 19:27:26,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5673842/858de4876a694b1692913ed2dee05f5b/FLAG9c0f130fc [2022-07-12 19:27:26,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b5673842/858de4876a694b1692913ed2dee05f5b [2022-07-12 19:27:26,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 19:27:26,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 19:27:26,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 19:27:26,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 19:27:26,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 19:27:26,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5822e1c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26, skipping insertion in model container [2022-07-12 19:27:26,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 19:27:26,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 19:27:26,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 19:27:26,581 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 19:27:26,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 19:27:26,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 19:27:26,599 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 19:27:26,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 19:27:26,655 INFO L208 MainTranslator]: Completed translation [2022-07-12 19:27:26,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26 WrapperNode [2022-07-12 19:27:26,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 19:27:26,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 19:27:26,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 19:27:26,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 19:27:26,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,674 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,688 INFO L137 Inliner]: procedures = 11, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2022-07-12 19:27:26,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 19:27:26,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 19:27:26,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 19:27:26,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 19:27:26,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 19:27:26,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 19:27:26,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 19:27:26,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 19:27:26,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (1/1) ... [2022-07-12 19:27:26,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 19:27:26,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 19:27:26,781 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) [2022-07-12 19:27:26,833 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 [2022-07-12 19:27:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 19:27:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 19:27:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 19:27:26,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 19:27:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 19:27:26,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 19:27:26,902 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 19:27:26,903 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 19:27:27,033 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 19:27:27,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 19:27:27,037 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 19:27:27,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:27:27 BoogieIcfgContainer [2022-07-12 19:27:27,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 19:27:27,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 19:27:27,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 19:27:27,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 19:27:27,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:27:26" (1/3) ... [2022-07-12 19:27:27,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184dd7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:27:27, skipping insertion in model container [2022-07-12 19:27:27,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:27:26" (2/3) ... [2022-07-12 19:27:27,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@184dd7e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:27:27, skipping insertion in model container [2022-07-12 19:27:27,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:27:27" (3/3) ... [2022-07-12 19:27:27,043 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2022-07-12 19:27:27,052 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 19:27:27,052 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-12 19:27:27,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 19:27:27,092 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@4a0324ec, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4d907a9d [2022-07-12 19:27:27,093 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 19:27:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-07-12 19:27:27,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-12 19:27:27,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:27:27,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-12 19:27:27,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:27:27,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:27:27,103 INFO L85 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2022-07-12 19:27:27,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 19:27:27,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296903813] [2022-07-12 19:27:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:27:27,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 19:27:27,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 19:27:27,113 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) [2022-07-12 19:27:27,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 19:27:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:27:27,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 19:27:27,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 19:27:27,199 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 19:27:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:27:27,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 19:27:27,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 19:27:27,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296903813] [2022-07-12 19:27:27,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296903813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:27:27,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:27:27,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 19:27:27,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062421036] [2022-07-12 19:27:27,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:27:27,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 19:27:27,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 19:27:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 19:27:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:27:27,232 INFO L87 Difference]: Start difference. First operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 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 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-07-12 19:27:27,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:27:27,255 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2022-07-12 19:27:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 19:27:27,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-07-12 19:27:27,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:27:27,261 INFO L225 Difference]: With dead ends: 12 [2022-07-12 19:27:27,261 INFO L226 Difference]: Without dead ends: 10 [2022-07-12 19:27:27,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:27:27,265 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:27:27,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:27:27,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-07-12 19:27:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-07-12 19:27:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-07-12 19:27:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-07-12 19:27:27,283 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2022-07-12 19:27:27,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:27:27,283 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-07-12 19:27:27,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-07-12 19:27:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-07-12 19:27:27,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-12 19:27:27,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:27:27,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-12 19:27:27,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 19:27:27,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 19:27:27,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:27:27,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:27:27,501 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-12 19:27:27,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 19:27:27,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962693622] [2022-07-12 19:27:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:27:27,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 19:27:27,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 19:27:27,515 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) [2022-07-12 19:27:27,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 19:27:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:27:27,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 19:27:27,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 19:27:27,560 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 19:27:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:27:27,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 19:27:27,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 19:27:27,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962693622] [2022-07-12 19:27:27,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962693622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:27:27,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:27:27,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 19:27:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041570600] [2022-07-12 19:27:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:27:27,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 19:27:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 19:27:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 19:27:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:27:27,594 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-07-12 19:27:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:27:27,614 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-07-12 19:27:27,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 19:27:27,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-07-12 19:27:27,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:27:27,615 INFO L225 Difference]: With dead ends: 16 [2022-07-12 19:27:27,615 INFO L226 Difference]: Without dead ends: 16 [2022-07-12 19:27:27,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 19:27:27,617 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:27:27,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:27:27,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-12 19:27:27,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2022-07-12 19:27:27,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-07-12 19:27:27,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-07-12 19:27:27,620 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 4 [2022-07-12 19:27:27,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:27:27,620 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-07-12 19:27:27,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-07-12 19:27:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-07-12 19:27:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 19:27:27,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:27:27,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 19:27:27,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 19:27:27,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 19:27:27,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:27:27,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:27:27,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1810601999, now seen corresponding path program 1 times [2022-07-12 19:27:27,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 19:27:27,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406015998] [2022-07-12 19:27:27,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:27:27,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 19:27:27,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 19:27:27,831 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) [2022-07-12 19:27:27,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 19:27:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:27:27,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 19:27:27,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 19:27:27,938 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 19:27:27,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2022-07-12 19:27:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:27:27,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 19:27:27,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 19:27:27,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406015998] [2022-07-12 19:27:27,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406015998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 19:27:27,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 19:27:27,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 19:27:27,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887617611] [2022-07-12 19:27:27,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 19:27:27,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 19:27:27,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 19:27:27,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 19:27:27,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 19:27:27,955 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-12 19:27:27,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:27:27,987 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2022-07-12 19:27:27,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 19:27:27,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-07-12 19:27:27,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:27:27,988 INFO L225 Difference]: With dead ends: 13 [2022-07-12 19:27:27,988 INFO L226 Difference]: Without dead ends: 13 [2022-07-12 19:27:27,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 19:27:27,989 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:27:27,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2022-07-12 19:27:27,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-12 19:27:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-12 19:27:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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) [2022-07-12 19:27:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-07-12 19:27:27,991 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2022-07-12 19:27:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:27:27,991 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-07-12 19:27:27,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-07-12 19:27:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-07-12 19:27:27,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 19:27:27,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:27:27,991 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-07-12 19:27:27,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-12 19:27:28,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 19:27:28,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:27:28,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:27:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1810603474, now seen corresponding path program 1 times [2022-07-12 19:27:28,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 19:27:28,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344140442] [2022-07-12 19:27:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:27:28,203 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 19:27:28,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 19:27:28,214 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) [2022-07-12 19:27:28,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 19:27:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:27:28,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 19:27:28,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 19:27:28,252 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 19:27:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:27:28,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 19:27:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:27:28,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 19:27:28,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344140442] [2022-07-12 19:27:28,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344140442] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 19:27:28,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 19:27:28,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2022-07-12 19:27:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000500045] [2022-07-12 19:27:28,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 19:27:28,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 19:27:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 19:27:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 19:27:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 19:27:28,473 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-07-12 19:27:28,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:27:28,513 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-07-12 19:27:28,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 19:27:28,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 7 [2022-07-12 19:27:28,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:27:28,514 INFO L225 Difference]: With dead ends: 22 [2022-07-12 19:27:28,514 INFO L226 Difference]: Without dead ends: 22 [2022-07-12 19:27:28,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-12 19:27:28,515 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:27:28,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 19:27:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-12 19:27:28,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2022-07-12 19:27:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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) [2022-07-12 19:27:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-07-12 19:27:28,519 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2022-07-12 19:27:28,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:27:28,519 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-07-12 19:27:28,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) [2022-07-12 19:27:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-07-12 19:27:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 19:27:28,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:27:28,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-07-12 19:27:28,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 19:27:28,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 19:27:28,720 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:27:28,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:27:28,721 INFO L85 PathProgramCache]: Analyzing trace with hash -806218973, now seen corresponding path program 1 times [2022-07-12 19:27:28,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 19:27:28,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673627204] [2022-07-12 19:27:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 19:27:28,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 19:27:28,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 19:27:28,726 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) [2022-07-12 19:27:28,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 19:27:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 19:27:28,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 19:27:28,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 19:27:28,905 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 19:27:28,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2022-07-12 19:27:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:27:28,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 19:27:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 19:27:29,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 19:27:29,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673627204] [2022-07-12 19:27:29,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673627204] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 19:27:29,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 19:27:29,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-12 19:27:29,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053965740] [2022-07-12 19:27:29,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 19:27:29,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 19:27:29,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 19:27:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 19:27:29,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 19:27:29,033 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2022-07-12 19:27:29,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 19:27:29,131 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-07-12 19:27:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 19:27:29,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 10 [2022-07-12 19:27:29,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 19:27:29,133 INFO L225 Difference]: With dead ends: 16 [2022-07-12 19:27:29,133 INFO L226 Difference]: Without dead ends: 16 [2022-07-12 19:27:29,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-12 19:27:29,134 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 19:27:29,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2022-07-12 19:27:29,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-12 19:27:29,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-07-12 19:27:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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) [2022-07-12 19:27:29,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-07-12 19:27:29,136 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2022-07-12 19:27:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 19:27:29,136 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-07-12 19:27:29,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2022-07-12 19:27:29,136 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-07-12 19:27:29,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 19:27:29,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 19:27:29,137 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2022-07-12 19:27:29,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 19:27:29,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 19:27:29,338 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2022-07-12 19:27:29,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 19:27:29,338 INFO L85 PathProgramCache]: Analyzing trace with hash -806217498, now seen corresponding path program 2 times [2022-07-12 19:27:29,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 19:27:29,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359871151] [2022-07-12 19:27:29,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 19:27:29,339 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 19:27:29,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 19:27:29,342 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) [2022-07-12 19:27:29,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 19:27:29,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 19:27:29,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-07-12 19:27:29,393 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 19:27:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 19:27:29,430 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 19:27:29,431 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 19:27:29,431 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2022-07-12 19:27:29,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2022-07-12 19:27:29,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2022-07-12 19:27:29,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 19:27:29,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 19:27:29,635 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-07-12 19:27:29,638 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 19:27:29,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 07:27:29 BoogieIcfgContainer [2022-07-12 19:27:29,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 19:27:29,652 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 19:27:29,652 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 19:27:29,652 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 19:27:29,652 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:27:27" (3/4) ... [2022-07-12 19:27:29,653 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 19:27:29,674 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 19:27:29,674 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 19:27:29,674 INFO L158 Benchmark]: Toolchain (without parser) took 3231.48ms. Allocated memory was 52.4MB in the beginning and 81.8MB in the end (delta: 29.4MB). Free memory was 29.6MB in the beginning and 45.8MB in the end (delta: -16.1MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2022-07-12 19:27:29,674 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 52.4MB. Free memory was 33.7MB in the beginning and 33.7MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 19:27:29,675 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.01ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.5MB in the beginning and 50.8MB in the end (delta: -21.3MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-07-12 19:27:29,675 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.06ms. Allocated memory is still 67.1MB. Free memory was 50.6MB in the beginning and 49.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 19:27:29,675 INFO L158 Benchmark]: Boogie Preprocessor took 31.06ms. Allocated memory is still 67.1MB. Free memory was 49.0MB in the beginning and 47.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 19:27:29,675 INFO L158 Benchmark]: RCFGBuilder took 316.39ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 37.9MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 19:27:29,675 INFO L158 Benchmark]: TraceAbstraction took 2612.29ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 37.4MB in the beginning and 47.9MB in the end (delta: -10.5MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-07-12 19:27:29,675 INFO L158 Benchmark]: Witness Printer took 21.87ms. Allocated memory is still 81.8MB. Free memory was 47.9MB in the beginning and 45.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 19:27:29,676 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 52.4MB. Free memory was 33.7MB in the beginning and 33.7MB in the end (delta: 43.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.01ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.5MB in the beginning and 50.8MB in the end (delta: -21.3MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.06ms. Allocated memory is still 67.1MB. Free memory was 50.6MB in the beginning and 49.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.06ms. Allocated memory is still 67.1MB. Free memory was 49.0MB in the beginning and 47.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.39ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 37.9MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2612.29ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 37.4MB in the beginning and 47.9MB in the end (delta: -10.5MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Witness Printer took 21.87ms. Allocated memory is still 81.8MB. Free memory was 47.9MB in the beginning and 45.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; [L15] CALL areNatural((int*) numbers) [L2] int i = 0; VAL [i=0, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=0, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=0, numbers={3:0}, numbers={3:0}, numbers[i]=50462976] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=1, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=1, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=1, numbers={3:0}, numbers={3:0}, numbers[i]=117835012] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=2, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=2, numbers={3:0}, numbers={3:0}] [L4] numbers[i] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 42 mSDtfsCounter, 63 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=5, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 42 ConstructedInterpolants, 2 QuantifiedInterpolants, 589 SizeOfPredicates, 27 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 0/10 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! [2022-07-12 19:27:29,700 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)