./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 791161d1 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/array-memsafety/knapsack_alloca_unsafe.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 05:38:50,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:38:50,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:38:50,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:38:50,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:38:50,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:38:50,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:38:50,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:38:50,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:38:50,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:38:50,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:38:50,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:38:50,635 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:38:50,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:38:50,638 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:38:50,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:38:50,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:38:50,647 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:38:50,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:38:50,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:38:50,656 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:38:50,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:38:50,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:38:50,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:38:50,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:38:50,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:38:50,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:38:50,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:38:50,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:38:50,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:38:50,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:38:50,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:38:50,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:38:50,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:38:50,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:38:50,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:38:50,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:38:50,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:38:50,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:38:50,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:38:50,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:38:50,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:38:50,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-23 05:38:50,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:38:50,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:38:50,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:38:50,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:38:50,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:38:50,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:38:50,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:38:50,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:38:50,707 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:38:50,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:38:50,708 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:38:50,708 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 05:38:50,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:38:50,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:38:50,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:38:50,709 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 05:38:50,709 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 05:38:50,709 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 05:38:50,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:38:50,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 05:38:50,710 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:38:50,710 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:38:50,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:38:50,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:38:50,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:38:50,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:38:50,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:38:50,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:38:50,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 05:38:50,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 05:38:50,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 [2022-07-23 05:38:50,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:38:50,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:38:50,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:38:50,954 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:38:50,955 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:38:50,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2022-07-23 05:38:51,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0fe2f94/9e95d585232745f89595dae71fbf054b/FLAGfd329ebd5 [2022-07-23 05:38:51,432 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:38:51,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2022-07-23 05:38:51,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0fe2f94/9e95d585232745f89595dae71fbf054b/FLAGfd329ebd5 [2022-07-23 05:38:51,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0fe2f94/9e95d585232745f89595dae71fbf054b [2022-07-23 05:38:51,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:38:51,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:38:51,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:38:51,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:38:51,462 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:38:51,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:38:51" (1/1) ... [2022-07-23 05:38:51,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4724afce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:51, skipping insertion in model container [2022-07-23 05:38:51,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:38:51" (1/1) ... [2022-07-23 05:38:51,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:38:51,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:38:51,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:38:51,759 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) [2022-07-23 05:38:51,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a5455db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:51, skipping insertion in model container [2022-07-23 05:38:51,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:38:51,761 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-23 05:38:51,763 INFO L158 Benchmark]: Toolchain (without parser) took 305.97ms. Allocated memory is still 88.1MB. Free memory was 54.2MB in the beginning and 61.8MB in the end (delta: -7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 05:38:51,764 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 88.1MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 05:38:51,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.99ms. Allocated memory is still 88.1MB. Free memory was 54.0MB in the beginning and 62.0MB in the end (delta: -8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 05:38:51,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 88.1MB. Free memory is still 52.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.99ms. Allocated memory is still 88.1MB. Free memory was 54.0MB in the beginning and 62.0MB in the end (delta: -8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 535]: 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/array-memsafety/knapsack_alloca_unsafe.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 05:38:53,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:38:53,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:38:53,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:38:53,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:38:53,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:38:53,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:38:53,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:38:53,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:38:53,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:38:53,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:38:53,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:38:53,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:38:53,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:38:53,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:38:53,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:38:53,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:38:53,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:38:53,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:38:53,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:38:53,565 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:38:53,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:38:53,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:38:53,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:38:53,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:38:53,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:38:53,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:38:53,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:38:53,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:38:53,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:38:53,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:38:53,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:38:53,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:38:53,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:38:53,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:38:53,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:38:53,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:38:53,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:38:53,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:38:53,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:38:53,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:38:53,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:38:53,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-23 05:38:53,625 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:38:53,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:38:53,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:38:53,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:38:53,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:38:53,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:38:53,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:38:53,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:38:53,628 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:38:53,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:38:53,629 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:38:53,629 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 05:38:53,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:38:53,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:38:53,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:38:53,630 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 05:38:53,631 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 05:38:53,631 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 05:38:53,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:38:53,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 05:38:53,631 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 05:38:53,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 05:38:53,632 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:38:53,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:38:53,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:38:53,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:38:53,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:38:53,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:38:53,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:38:53,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:38:53,633 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 05:38:53,634 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 05:38:53,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 05:38:53,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 [2022-07-23 05:38:53,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:38:53,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:38:53,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:38:53,951 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:38:53,952 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:38:53,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2022-07-23 05:38:54,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ad8de3d7/3ce810756fb54d84b8e34476db2ebf3d/FLAGbd0cd4da4 [2022-07-23 05:38:54,506 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:38:54,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2022-07-23 05:38:54,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ad8de3d7/3ce810756fb54d84b8e34476db2ebf3d/FLAGbd0cd4da4 [2022-07-23 05:38:55,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ad8de3d7/3ce810756fb54d84b8e34476db2ebf3d [2022-07-23 05:38:55,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:38:55,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:38:55,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:38:55,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:38:55,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:38:55,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1bee0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55, skipping insertion in model container [2022-07-23 05:38:55,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:38:55,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:38:55,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:38:55,422 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 05:38:55,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:38:55,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:38:55,481 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 05:38:55,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:38:55,535 INFO L208 MainTranslator]: Completed translation [2022-07-23 05:38:55,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55 WrapperNode [2022-07-23 05:38:55,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:38:55,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 05:38:55,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 05:38:55,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 05:38:55,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,606 INFO L137 Inliner]: procedures = 117, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 112 [2022-07-23 05:38:55,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 05:38:55,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 05:38:55,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 05:38:55,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 05:38:55,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 05:38:55,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 05:38:55,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 05:38:55,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 05:38:55,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (1/1) ... [2022-07-23 05:38:55,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:38:55,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:38:55,685 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) [2022-07-23 05:38:55,696 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 [2022-07-23 05:38:55,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 05:38:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 05:38:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 05:38:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 05:38:55,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 05:38:55,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 05:38:55,872 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 05:38:55,873 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 05:38:56,422 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 05:38:56,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 05:38:56,427 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-23 05:38:56,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:38:56 BoogieIcfgContainer [2022-07-23 05:38:56,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 05:38:56,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 05:38:56,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 05:38:56,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 05:38:56,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 05:38:55" (1/3) ... [2022-07-23 05:38:56,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d26e8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:38:56, skipping insertion in model container [2022-07-23 05:38:56,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:38:55" (2/3) ... [2022-07-23 05:38:56,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d26e8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:38:56, skipping insertion in model container [2022-07-23 05:38:56,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:38:56" (3/3) ... [2022-07-23 05:38:56,436 INFO L111 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2022-07-23 05:38:56,455 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 05:38:56,455 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2022-07-23 05:38:56,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 05:38:56,515 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@5535ae23, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2431c2a8 [2022-07-23 05:38:56,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-07-23 05:38:56,520 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 37 states have (on average 2.054054054054054) internal successors, (76), 64 states have internal predecessors, (76), 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) [2022-07-23 05:38:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 05:38:56,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:38:56,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:38:56,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-07-23 05:38:56,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:38:56,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2022-07-23 05:38:56,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:38:56,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209014637] [2022-07-23 05:38:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:38:56,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:38:56,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:38:56,549 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) [2022-07-23 05:38:56,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 05:38:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:38:56,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 05:38:56,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:38:56,774 INFO L356 Elim1Store]: treesize reduction 94, result has 19.7 percent of original size [2022-07-23 05:38:56,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 47 [2022-07-23 05:38:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:38:56,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:38:56,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:38:56,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209014637] [2022-07-23 05:38:56,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209014637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:38:56,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:38:56,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:38:56,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132460979] [2022-07-23 05:38:56,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:38:56,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:38:56,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:38:56,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:38:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:38:56,951 INFO L87 Difference]: Start difference. First operand has 65 states, 37 states have (on average 2.054054054054054) internal successors, (76), 64 states have internal predecessors, (76), 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 3.5) internal successors, (7), 3 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) [2022-07-23 05:38:56,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:38:56,967 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2022-07-23 05:38:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:38:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2022-07-23 05:38:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:38:56,975 INFO L225 Difference]: With dead ends: 72 [2022-07-23 05:38:56,975 INFO L226 Difference]: Without dead ends: 70 [2022-07-23 05:38:56,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:38:56,979 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 5 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:38:56,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-07-23 05:38:56,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-23 05:38:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-07-23 05:38:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 64 states have internal predecessors, (74), 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) [2022-07-23 05:38:57,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-07-23 05:38:57,010 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 7 [2022-07-23 05:38:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:38:57,010 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-07-23 05:38:57,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-07-23 05:38:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-07-23 05:38:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 05:38:57,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:38:57,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:38:57,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 05:38:57,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:38:57,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-07-23 05:38:57,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:38:57,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2022-07-23 05:38:57,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:38:57,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916133988] [2022-07-23 05:38:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:38:57,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:38:57,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:38:57,224 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) [2022-07-23 05:38:57,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 05:38:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:38:57,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-23 05:38:57,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:38:57,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:38:57,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:38:57,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:38:57,404 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-07-23 05:38:57,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 29 [2022-07-23 05:38:57,436 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-23 05:38:57,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2022-07-23 05:38:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:38:57,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 05:38:57,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 05:38:57,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916133988] [2022-07-23 05:38:57,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916133988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:38:57,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:38:57,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:38:57,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025996490] [2022-07-23 05:38:57,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:38:57,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:38:57,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 05:38:57,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:38:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:38:57,539 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2022-07-23 05:38:58,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:38:58,081 INFO L93 Difference]: Finished difference Result 200 states and 220 transitions. [2022-07-23 05:38:58,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:38:58,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 [2022-07-23 05:38:58,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:38:58,085 INFO L225 Difference]: With dead ends: 200 [2022-07-23 05:38:58,085 INFO L226 Difference]: Without dead ends: 200 [2022-07-23 05:38:58,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:38:58,086 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 156 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 05:38:58,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 349 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 05:38:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-23 05:38:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 69. [2022-07-23 05:38:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.880952380952381) internal successors, (79), 68 states have internal predecessors, (79), 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) [2022-07-23 05:38:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2022-07-23 05:38:58,095 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 7 [2022-07-23 05:38:58,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:38:58,095 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2022-07-23 05:38:58,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2022-07-23 05:38:58,096 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2022-07-23 05:38:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-23 05:38:58,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:38:58,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:38:58,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 05:38:58,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:38:58,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-07-23 05:38:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:38:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2022-07-23 05:38:58,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 05:38:58,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560217018] [2022-07-23 05:38:58,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:38:58,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 05:38:58,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 05:38:58,310 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) [2022-07-23 05:38:58,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 05:38:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 05:38:58,369 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 05:38:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 05:38:58,429 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-23 05:38:58,429 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-23 05:38:58,430 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2022-07-23 05:38:58,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2022-07-23 05:38:58,432 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2022-07-23 05:38:58,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2022-07-23 05:38:58,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2022-07-23 05:38:58,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2022-07-23 05:38:58,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2022-07-23 05:38:58,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2022-07-23 05:38:58,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2022-07-23 05:38:58,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2022-07-23 05:38:58,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2022-07-23 05:38:58,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2022-07-23 05:38:58,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2022-07-23 05:38:58,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2022-07-23 05:38:58,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 27 remaining) [2022-07-23 05:38:58,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 27 remaining) [2022-07-23 05:38:58,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 27 remaining) [2022-07-23 05:38:58,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 27 remaining) [2022-07-23 05:38:58,436 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 27 remaining) [2022-07-23 05:38:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2022-07-23 05:38:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2022-07-23 05:38:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2022-07-23 05:38:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2022-07-23 05:38:58,437 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2022-07-23 05:38:58,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2022-07-23 05:38:58,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2022-07-23 05:38:58,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (0 of 27 remaining) [2022-07-23 05:38:58,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-23 05:38:58,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 05:38:58,654 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-23 05:38:58,658 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-23 05:38:58,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 05:38:58 BoogieIcfgContainer [2022-07-23 05:38:58,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-23 05:38:58,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 05:38:58,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 05:38:58,677 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 05:38:58,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:38:56" (3/4) ... [2022-07-23 05:38:58,682 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-23 05:38:58,722 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 05:38:58,722 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 05:38:58,724 INFO L158 Benchmark]: Toolchain (without parser) took 3702.13ms. Allocated memory was 54.5MB in the beginning and 83.9MB in the end (delta: 29.4MB). Free memory was 30.7MB in the beginning and 59.0MB in the end (delta: -28.4MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2022-07-23 05:38:58,724 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 05:38:58,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.70ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 30.5MB in the beginning and 41.6MB in the end (delta: -11.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-07-23 05:38:58,725 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.86ms. Allocated memory is still 69.2MB. Free memory was 41.6MB in the beginning and 39.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 05:38:58,730 INFO L158 Benchmark]: Boogie Preprocessor took 36.08ms. Allocated memory is still 69.2MB. Free memory was 39.4MB in the beginning and 37.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 05:38:58,730 INFO L158 Benchmark]: RCFGBuilder took 784.56ms. Allocated memory is still 69.2MB. Free memory was 37.6MB in the beginning and 35.6MB in the end (delta: 2.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-23 05:38:58,731 INFO L158 Benchmark]: TraceAbstraction took 2245.87ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 35.2MB in the beginning and 61.0MB in the end (delta: -25.8MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2022-07-23 05:38:58,731 INFO L158 Benchmark]: Witness Printer took 45.90ms. Allocated memory is still 83.9MB. Free memory was 61.0MB in the beginning and 59.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 05:38:58,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 54.5MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 513.70ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 30.5MB in the beginning and 41.6MB in the end (delta: -11.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.86ms. Allocated memory is still 69.2MB. Free memory was 41.6MB in the beginning and 39.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.08ms. Allocated memory is still 69.2MB. Free memory was 39.4MB in the beginning and 37.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 784.56ms. Allocated memory is still 69.2MB. Free memory was 37.6MB in the beginning and 35.6MB in the end (delta: 2.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2245.87ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 35.2MB in the beginning and 61.0MB in the end (delta: -25.8MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * Witness Printer took 45.90ms. Allocated memory is still 83.9MB. Free memory was 61.0MB in the beginning and 59.0MB in the end (delta: 1.9MB). 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: [L527] int N = __VERIFIER_nondet_int(); [L528] int M = __VERIFIER_nondet_int(); [L529] COND FALSE !(N < 1) VAL [N=1073741824] [L532] COND TRUE M < 1 [L533] M = 1 VAL [M=1, N=1073741824] [L535] int *size = (int*) __builtin_alloca (N * sizeof(int)); [L536] int *val = (int*) __builtin_alloca (N * sizeof(int)); [L537] int *cost = (int*) __builtin_alloca (M * sizeof(int)); [L538] int *best = (int*) __builtin_alloca (M * sizeof(int)); [L540] int i = 0; VAL [__builtin_alloca (M * sizeof(int))={11:0}, __builtin_alloca (M * sizeof(int))={5:0}, __builtin_alloca (N * sizeof(int))={7:0}, __builtin_alloca (N * sizeof(int))={3:0}, best={5:0}, cost={11:0}, i=0, M=1, N=1073741824, size={3:0}, val={7:0}] [L540] COND TRUE i < N VAL [__builtin_alloca (M * sizeof(int))={11:0}, __builtin_alloca (M * sizeof(int))={5:0}, __builtin_alloca (N * sizeof(int))={7:0}, __builtin_alloca (N * sizeof(int))={3:0}, best={5:0}, cost={11:0}, i=0, M=1, N=1073741824, size={3:0}, val={7:0}] [L542] size[i] = __VERIFIER_nondet_int() - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: 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, 65 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 454 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 33 IncrementalHoareTripleChecker+Unchecked, 273 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 181 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=2, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 136 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 2 QuantifiedInterpolants, 116 SizeOfPredicates, 11 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-23 05:38:58,771 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)