./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f4b24e32 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-ext2/complex_data_creation_test02-1.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 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 06:23:02,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 06:23:02,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 06:23:02,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 06:23:02,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 06:23:02,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 06:23:02,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 06:23:02,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 06:23:02,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 06:23:02,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 06:23:02,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 06:23:02,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 06:23:02,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 06:23:02,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 06:23:02,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 06:23:02,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 06:23:02,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 06:23:02,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 06:23:02,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 06:23:02,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 06:23:02,768 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 06:23:02,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 06:23:02,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 06:23:02,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 06:23:02,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 06:23:02,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 06:23:02,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 06:23:02,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 06:23:02,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 06:23:02,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 06:23:02,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 06:23:02,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 06:23:02,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 06:23:02,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 06:23:02,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 06:23:02,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 06:23:02,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 06:23:02,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 06:23:02,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 06:23:02,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 06:23:02,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 06:23:02,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 06:23:02,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-14 06:23:02,822 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 06:23:02,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 06:23:02,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 06:23:02,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 06:23:02,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 06:23:02,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 06:23:02,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 06:23:02,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 06:23:02,825 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 06:23:02,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 06:23:02,826 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 06:23:02,827 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 06:23:02,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 06:23:02,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 06:23:02,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 06:23:02,827 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 06:23:02,828 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 06:23:02,828 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 06:23:02,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 06:23:02,828 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 06:23:02,828 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 06:23:02,829 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 06:23:02,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 06:23:02,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 06:23:02,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 06:23:02,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:23:02,830 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 06:23:02,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 06:23:02,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 06:23:02,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 06:23:02,831 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 [2022-07-14 06:23:03,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 06:23:03,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 06:23:03,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 06:23:03,094 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 06:23:03,094 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 06:23:03,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2022-07-14 06:23:03,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c187f9a/96a9c57d63544618ad193575aa424e38/FLAG8f3524841 [2022-07-14 06:23:03,597 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 06:23:03,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2022-07-14 06:23:03,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c187f9a/96a9c57d63544618ad193575aa424e38/FLAG8f3524841 [2022-07-14 06:23:03,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c187f9a/96a9c57d63544618ad193575aa424e38 [2022-07-14 06:23:03,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 06:23:03,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 06:23:03,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 06:23:03,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 06:23:03,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 06:23:03,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:23:03" (1/1) ... [2022-07-14 06:23:03,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cdf6991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:03, skipping insertion in model container [2022-07-14 06:23:03,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:23:03" (1/1) ... [2022-07-14 06:23:03,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 06:23:03,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:23:03,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:23:04,007 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) [2022-07-14 06:23:04,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@48bb3814 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:04, skipping insertion in model container [2022-07-14 06:23:04,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 06:23:04,009 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-14 06:23:04,011 INFO L158 Benchmark]: Toolchain (without parser) took 375.41ms. Allocated memory is still 90.2MB. Free memory was 58.7MB in the beginning and 63.7MB in the end (delta: -4.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-14 06:23:04,012 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory was 36.0MB in the beginning and 36.0MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 06:23:04,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.30ms. Allocated memory is still 90.2MB. Free memory was 58.5MB in the beginning and 63.7MB in the end (delta: -5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-14 06:23:04,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 71.3MB. Free memory was 36.0MB in the beginning and 36.0MB in the end (delta: 48.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 372.30ms. Allocated memory is still 90.2MB. Free memory was 58.5MB in the beginning and 63.7MB in the end (delta: -5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: 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-ext2/complex_data_creation_test02-1.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 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 06:23:05,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 06:23:05,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 06:23:05,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 06:23:05,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 06:23:05,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 06:23:05,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 06:23:05,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 06:23:05,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 06:23:05,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 06:23:05,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 06:23:05,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 06:23:05,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 06:23:05,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 06:23:05,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 06:23:05,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 06:23:05,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 06:23:05,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 06:23:05,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 06:23:05,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 06:23:05,742 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 06:23:05,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 06:23:05,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 06:23:05,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 06:23:05,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 06:23:05,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 06:23:05,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 06:23:05,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 06:23:05,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 06:23:05,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 06:23:05,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 06:23:05,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 06:23:05,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 06:23:05,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 06:23:05,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 06:23:05,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 06:23:05,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 06:23:05,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 06:23:05,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 06:23:05,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 06:23:05,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 06:23:05,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 06:23:05,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-14 06:23:05,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 06:23:05,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 06:23:05,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 06:23:05,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 06:23:05,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 06:23:05,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 06:23:05,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 06:23:05,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 06:23:05,806 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 06:23:05,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 06:23:05,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 06:23:05,808 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 06:23:05,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 06:23:05,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 06:23:05,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 06:23:05,808 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-14 06:23:05,818 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-14 06:23:05,818 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-14 06:23:05,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 06:23:05,818 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 06:23:05,819 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 06:23:05,819 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 06:23:05,819 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 06:23:05,819 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 06:23:05,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 06:23:05,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 06:23:05,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 06:23:05,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:23:05,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 06:23:05,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 06:23:05,821 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 06:23:05,821 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 06:23:05,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 06:23:05,821 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1489855b7530896bdd176b2b4b6c40b97d8289986908954c704880efe20dffb0 [2022-07-14 06:23:06,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 06:23:06,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 06:23:06,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 06:23:06,168 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 06:23:06,171 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 06:23:06,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2022-07-14 06:23:06,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6284fc959/b919f8db76f3428aadba6c0243092c89/FLAG40a5c394c [2022-07-14 06:23:06,735 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 06:23:06,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-1.i [2022-07-14 06:23:06,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6284fc959/b919f8db76f3428aadba6c0243092c89/FLAG40a5c394c [2022-07-14 06:23:07,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6284fc959/b919f8db76f3428aadba6c0243092c89 [2022-07-14 06:23:07,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 06:23:07,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 06:23:07,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 06:23:07,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 06:23:07,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 06:23:07,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18650ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07, skipping insertion in model container [2022-07-14 06:23:07,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 06:23:07,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:23:07,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:23:07,595 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 06:23:07,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 06:23:07,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:23:07,648 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 06:23:07,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 06:23:07,714 INFO L208 MainTranslator]: Completed translation [2022-07-14 06:23:07,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07 WrapperNode [2022-07-14 06:23:07,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 06:23:07,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 06:23:07,716 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 06:23:07,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 06:23:07,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,768 INFO L137 Inliner]: procedures = 129, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2022-07-14 06:23:07,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 06:23:07,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 06:23:07,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 06:23:07,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 06:23:07,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 06:23:07,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 06:23:07,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 06:23:07,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 06:23:07,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (1/1) ... [2022-07-14 06:23:07,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 06:23:07,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 06:23:07,877 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) [2022-07-14 06:23:07,879 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 [2022-07-14 06:23:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 06:23:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 06:23:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2022-07-14 06:23:07,907 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2022-07-14 06:23:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 06:23:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 06:23:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 06:23:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 06:23:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 06:23:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 06:23:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 06:23:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-14 06:23:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 06:23:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 06:23:07,996 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 06:23:07,998 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 06:23:08,658 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 06:23:08,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 06:23:08,664 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-14 06:23:08,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:23:08 BoogieIcfgContainer [2022-07-14 06:23:08,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 06:23:08,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 06:23:08,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 06:23:08,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 06:23:08,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 06:23:07" (1/3) ... [2022-07-14 06:23:08,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3305bbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:23:08, skipping insertion in model container [2022-07-14 06:23:08,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 06:23:07" (2/3) ... [2022-07-14 06:23:08,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3305bbb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:23:08, skipping insertion in model container [2022-07-14 06:23:08,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:23:08" (3/3) ... [2022-07-14 06:23:08,673 INFO L111 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02-1.i [2022-07-14 06:23:08,685 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 06:23:08,685 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2022-07-14 06:23:08,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 06:23:08,738 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@71dd67ff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71231e7b [2022-07-14 06:23:08,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2022-07-14 06:23:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 94 states have (on average 2.148936170212766) internal successors, (202), 186 states have internal predecessors, (202), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:08,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 06:23:08,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:08,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 06:23:08,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:08,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:08,754 INFO L85 PathProgramCache]: Analyzing trace with hash 5083689, now seen corresponding path program 1 times [2022-07-14 06:23:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:08,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21558739] [2022-07-14 06:23:08,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:08,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:08,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:08,771 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) [2022-07-14 06:23:08,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-14 06:23:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:08,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-14 06:23:08,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:08,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:08,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:08,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21558739] [2022-07-14 06:23:08,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21558739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:08,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:08,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:23:08,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473987202] [2022-07-14 06:23:08,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:08,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 06:23:08,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:08,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 06:23:08,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 06:23:08,928 INFO L87 Difference]: Start difference. First operand has 190 states, 94 states have (on average 2.148936170212766) internal successors, (202), 186 states have internal predecessors, (202), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-07-14 06:23:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:08,964 INFO L93 Difference]: Finished difference Result 190 states and 201 transitions. [2022-07-14 06:23:08,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 06:23:08,966 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2022-07-14 06:23:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:08,975 INFO L225 Difference]: With dead ends: 190 [2022-07-14 06:23:08,975 INFO L226 Difference]: Without dead ends: 188 [2022-07-14 06:23:08,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 06:23:08,980 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:08,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:23:08,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-14 06:23:09,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-07-14 06:23:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 93 states have (on average 2.096774193548387) internal successors, (195), 184 states have internal predecessors, (195), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 199 transitions. [2022-07-14 06:23:09,019 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 199 transitions. Word has length 4 [2022-07-14 06:23:09,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:09,020 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 199 transitions. [2022-07-14 06:23:09,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2022-07-14 06:23:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 199 transitions. [2022-07-14 06:23:09,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 06:23:09,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:09,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 06:23:09,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-14 06:23:09,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:09,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:09,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:09,229 INFO L85 PathProgramCache]: Analyzing trace with hash 5081478, now seen corresponding path program 1 times [2022-07-14 06:23:09,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:09,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119583576] [2022-07-14 06:23:09,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:09,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:09,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:09,232 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) [2022-07-14 06:23:09,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-14 06:23:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:09,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 06:23:09,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:09,343 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 [2022-07-14 06:23:09,350 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 [2022-07-14 06:23:09,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:23:09,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-14 06:23:09,408 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:23:09,409 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 11 treesize of output 11 [2022-07-14 06:23:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:09,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:09,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:09,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119583576] [2022-07-14 06:23:09,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119583576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:09,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:09,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:23:09,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217564903] [2022-07-14 06:23:09,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:09,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:23:09,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:09,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:23:09,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:23:09,439 INFO L87 Difference]: Start difference. First operand 188 states and 199 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-07-14 06:23:10,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:10,116 INFO L93 Difference]: Finished difference Result 206 states and 220 transitions. [2022-07-14 06:23:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:23:10,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2022-07-14 06:23:10,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:10,121 INFO L225 Difference]: With dead ends: 206 [2022-07-14 06:23:10,121 INFO L226 Difference]: Without dead ends: 206 [2022-07-14 06:23:10,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:23:10,122 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 32 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:10,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 355 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 06:23:10,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-14 06:23:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 193. [2022-07-14 06:23:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 98 states have (on average 2.0816326530612246) internal successors, (204), 189 states have internal predecessors, (204), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 208 transitions. [2022-07-14 06:23:10,146 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 208 transitions. Word has length 4 [2022-07-14 06:23:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:10,146 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 208 transitions. [2022-07-14 06:23:10,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-07-14 06:23:10,147 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 208 transitions. [2022-07-14 06:23:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-14 06:23:10,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:10,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-14 06:23:10,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:10,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:10,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:10,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:10,358 INFO L85 PathProgramCache]: Analyzing trace with hash 5081477, now seen corresponding path program 1 times [2022-07-14 06:23:10,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:10,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718796998] [2022-07-14 06:23:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:10,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:10,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:10,360 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) [2022-07-14 06:23:10,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-14 06:23:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:10,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 06:23:10,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:10,422 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 [2022-07-14 06:23:10,442 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-14 06:23:10,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-07-14 06:23:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:10,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:10,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:10,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718796998] [2022-07-14 06:23:10,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718796998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:10,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:10,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:23:10,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553590607] [2022-07-14 06:23:10,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:10,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:23:10,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:10,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:23:10,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:23:10,459 INFO L87 Difference]: Start difference. First operand 193 states and 208 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-07-14 06:23:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:10,853 INFO L93 Difference]: Finished difference Result 212 states and 226 transitions. [2022-07-14 06:23:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:23:10,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2022-07-14 06:23:10,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:10,855 INFO L225 Difference]: With dead ends: 212 [2022-07-14 06:23:10,855 INFO L226 Difference]: Without dead ends: 212 [2022-07-14 06:23:10,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:23:10,857 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 149 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:10,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 290 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 06:23:10,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-14 06:23:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 187. [2022-07-14 06:23:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 98 states have (on average 2.0) internal successors, (196), 183 states have internal predecessors, (196), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 200 transitions. [2022-07-14 06:23:10,866 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 200 transitions. Word has length 4 [2022-07-14 06:23:10,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:10,867 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 200 transitions. [2022-07-14 06:23:10,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2022-07-14 06:23:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 200 transitions. [2022-07-14 06:23:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 06:23:10,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:10,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 06:23:10,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:11,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:11,078 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:11,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:11,079 INFO L85 PathProgramCache]: Analyzing trace with hash 157525902, now seen corresponding path program 1 times [2022-07-14 06:23:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:11,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293684120] [2022-07-14 06:23:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:11,084 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:11,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:11,085 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) [2022-07-14 06:23:11,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-14 06:23:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:11,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 06:23:11,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:11,160 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 [2022-07-14 06:23:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:11,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:11,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:11,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293684120] [2022-07-14 06:23:11,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293684120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:11,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:11,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:23:11,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253057058] [2022-07-14 06:23:11,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:11,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:23:11,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:11,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:23:11,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:11,169 INFO L87 Difference]: Start difference. First operand 187 states and 200 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:11,403 INFO L93 Difference]: Finished difference Result 210 states and 223 transitions. [2022-07-14 06:23:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:23:11,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 06:23:11,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:11,405 INFO L225 Difference]: With dead ends: 210 [2022-07-14 06:23:11,405 INFO L226 Difference]: Without dead ends: 210 [2022-07-14 06:23:11,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:11,407 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 64 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:11,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 234 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:23:11,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-14 06:23:11,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 185. [2022-07-14 06:23:11,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 98 states have (on average 1.969387755102041) internal successors, (193), 181 states have internal predecessors, (193), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:11,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 197 transitions. [2022-07-14 06:23:11,415 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 197 transitions. Word has length 5 [2022-07-14 06:23:11,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:11,415 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 197 transitions. [2022-07-14 06:23:11,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:11,415 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 197 transitions. [2022-07-14 06:23:11,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-14 06:23:11,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:11,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-14 06:23:11,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:11,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:11,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:11,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:11,625 INFO L85 PathProgramCache]: Analyzing trace with hash 157525903, now seen corresponding path program 1 times [2022-07-14 06:23:11,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:11,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215918033] [2022-07-14 06:23:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:11,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:11,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:11,627 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) [2022-07-14 06:23:11,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-14 06:23:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:11,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:23:11,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:11,683 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 [2022-07-14 06:23:11,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:11,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:11,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:11,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215918033] [2022-07-14 06:23:11,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215918033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:11,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:11,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:23:11,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815177497] [2022-07-14 06:23:11,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:11,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:23:11,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:11,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:23:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:11,697 INFO L87 Difference]: Start difference. First operand 185 states and 197 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:11,978 INFO L93 Difference]: Finished difference Result 183 states and 194 transitions. [2022-07-14 06:23:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:23:11,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-14 06:23:11,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:11,982 INFO L225 Difference]: With dead ends: 183 [2022-07-14 06:23:11,982 INFO L226 Difference]: Without dead ends: 183 [2022-07-14 06:23:11,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:11,983 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 11 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:11,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 275 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:23:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-14 06:23:11,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-07-14 06:23:11,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 98 states have (on average 1.9387755102040816) internal successors, (190), 179 states have internal predecessors, (190), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2022-07-14 06:23:11,989 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 5 [2022-07-14 06:23:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:11,990 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2022-07-14 06:23:11,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:11,990 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2022-07-14 06:23:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-14 06:23:11,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:11,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:12,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:12,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:12,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:12,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:12,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1322502935, now seen corresponding path program 1 times [2022-07-14 06:23:12,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:12,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22800355] [2022-07-14 06:23:12,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:12,200 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:12,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:12,201 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) [2022-07-14 06:23:12,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-14 06:23:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:12,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 06:23:12,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:12,274 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 [2022-07-14 06:23:12,299 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:23:12,300 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 11 treesize of output 11 [2022-07-14 06:23:12,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-14 06:23:12,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-14 06:23:12,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 06:23:12,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 06:23:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:12,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:12,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:12,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22800355] [2022-07-14 06:23:12,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22800355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:12,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:12,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 06:23:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549262035] [2022-07-14 06:23:12,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:23:12,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:12,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:23:12,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:23:12,387 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-07-14 06:23:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:12,777 INFO L93 Difference]: Finished difference Result 185 states and 197 transitions. [2022-07-14 06:23:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:23:12,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 [2022-07-14 06:23:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:12,779 INFO L225 Difference]: With dead ends: 185 [2022-07-14 06:23:12,779 INFO L226 Difference]: Without dead ends: 185 [2022-07-14 06:23:12,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:23:12,780 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 5 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:12,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 610 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:23:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-14 06:23:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2022-07-14 06:23:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 99 states have (on average 1.9292929292929293) internal successors, (191), 180 states have internal predecessors, (191), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 195 transitions. [2022-07-14 06:23:12,786 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 195 transitions. Word has length 10 [2022-07-14 06:23:12,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:12,786 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 195 transitions. [2022-07-14 06:23:12,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-07-14 06:23:12,787 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 195 transitions. [2022-07-14 06:23:12,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-14 06:23:12,787 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:12,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:12,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:12,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:12,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash -388286564, now seen corresponding path program 1 times [2022-07-14 06:23:12,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:12,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296771580] [2022-07-14 06:23:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:12,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:12,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:12,991 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:12,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-14 06:23:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:13,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 06:23:13,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:13,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:13,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:13,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296771580] [2022-07-14 06:23:13,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296771580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:13,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:13,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:23:13,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646835349] [2022-07-14 06:23:13,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:13,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:23:13,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:23:13,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:23:13,086 INFO L87 Difference]: Start difference. First operand 184 states and 195 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:13,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:13,112 INFO L93 Difference]: Finished difference Result 262 states and 277 transitions. [2022-07-14 06:23:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:23:13,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-14 06:23:13,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:13,114 INFO L225 Difference]: With dead ends: 262 [2022-07-14 06:23:13,114 INFO L226 Difference]: Without dead ends: 262 [2022-07-14 06:23:13,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:23:13,115 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 81 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:13,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 551 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:23:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-07-14 06:23:13,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 226. [2022-07-14 06:23:13,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.95) internal successors, (273), 221 states have internal predecessors, (273), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 277 transitions. [2022-07-14 06:23:13,122 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 277 transitions. Word has length 12 [2022-07-14 06:23:13,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:13,123 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 277 transitions. [2022-07-14 06:23:13,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:13,123 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 277 transitions. [2022-07-14 06:23:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-14 06:23:13,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:13,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:13,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:13,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:13,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:13,333 INFO L85 PathProgramCache]: Analyzing trace with hash 848024593, now seen corresponding path program 1 times [2022-07-14 06:23:13,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:13,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778300186] [2022-07-14 06:23:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:13,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:13,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:13,335 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:13,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-14 06:23:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:13,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:23:13,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:13,420 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-14 06:23:13,420 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 1 case distinctions, treesize of input 9 treesize of output 14 [2022-07-14 06:23:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:13,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:13,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:13,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778300186] [2022-07-14 06:23:13,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778300186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:13,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:13,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:23:13,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178775810] [2022-07-14 06:23:13,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:13,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:23:13,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:23:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:13,434 INFO L87 Difference]: Start difference. First operand 226 states and 277 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:13,714 INFO L93 Difference]: Finished difference Result 229 states and 273 transitions. [2022-07-14 06:23:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:23:13,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-14 06:23:13,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:13,716 INFO L225 Difference]: With dead ends: 229 [2022-07-14 06:23:13,716 INFO L226 Difference]: Without dead ends: 229 [2022-07-14 06:23:13,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:13,717 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 63 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:13,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 204 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:23:13,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-14 06:23:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 220. [2022-07-14 06:23:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 146 states have (on average 1.8013698630136987) internal successors, (263), 215 states have internal predecessors, (263), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:13,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 267 transitions. [2022-07-14 06:23:13,722 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 267 transitions. Word has length 13 [2022-07-14 06:23:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:13,722 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 267 transitions. [2022-07-14 06:23:13,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 267 transitions. [2022-07-14 06:23:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-14 06:23:13,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:13,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:13,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:13,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:13,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:13,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:13,935 INFO L85 PathProgramCache]: Analyzing trace with hash 848024594, now seen corresponding path program 1 times [2022-07-14 06:23:13,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:13,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658311979] [2022-07-14 06:23:13,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:13,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:13,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:13,937 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:13,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-14 06:23:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:14,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 06:23:14,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:14,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:23:14,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-07-14 06:23:14,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:23:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:14,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:14,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:14,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658311979] [2022-07-14 06:23:14,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658311979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:14,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:14,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:23:14,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110474299] [2022-07-14 06:23:14,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:14,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:23:14,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:14,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:23:14,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:14,058 INFO L87 Difference]: Start difference. First operand 220 states and 267 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:14,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:14,357 INFO L93 Difference]: Finished difference Result 241 states and 281 transitions. [2022-07-14 06:23:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:23:14,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-14 06:23:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:14,360 INFO L225 Difference]: With dead ends: 241 [2022-07-14 06:23:14,360 INFO L226 Difference]: Without dead ends: 241 [2022-07-14 06:23:14,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:14,361 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 50 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:14,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 214 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:23:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-14 06:23:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 221. [2022-07-14 06:23:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 156 states have (on average 1.6474358974358974) internal successors, (257), 216 states have internal predecessors, (257), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 261 transitions. [2022-07-14 06:23:14,367 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 261 transitions. Word has length 13 [2022-07-14 06:23:14,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:14,367 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 261 transitions. [2022-07-14 06:23:14,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 261 transitions. [2022-07-14 06:23:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-14 06:23:14,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:14,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:14,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-14 06:23:14,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:14,577 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:14,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:14,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1586642756, now seen corresponding path program 1 times [2022-07-14 06:23:14,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:14,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838331111] [2022-07-14 06:23:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:14,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:14,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:14,579 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:14,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-14 06:23:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:14,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 06:23:14,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:14,674 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-14 06:23:14,674 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 1 case distinctions, treesize of input 9 treesize of output 18 [2022-07-14 06:23:14,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:14,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-07-14 06:23:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:14,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:14,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:14,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838331111] [2022-07-14 06:23:14,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838331111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:14,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:14,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:23:14,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502712537] [2022-07-14 06:23:14,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:14,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:23:14,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:23:14,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:23:14,737 INFO L87 Difference]: Start difference. First operand 221 states and 261 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:15,206 INFO L93 Difference]: Finished difference Result 274 states and 327 transitions. [2022-07-14 06:23:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:23:15,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-14 06:23:15,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:15,208 INFO L225 Difference]: With dead ends: 274 [2022-07-14 06:23:15,208 INFO L226 Difference]: Without dead ends: 274 [2022-07-14 06:23:15,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:23:15,209 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 26 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:15,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 417 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 06:23:15,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-07-14 06:23:15,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 227. [2022-07-14 06:23:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 162 states have (on average 1.6481481481481481) internal successors, (267), 222 states have internal predecessors, (267), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 271 transitions. [2022-07-14 06:23:15,215 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 271 transitions. Word has length 17 [2022-07-14 06:23:15,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:15,216 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 271 transitions. [2022-07-14 06:23:15,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 271 transitions. [2022-07-14 06:23:15,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-14 06:23:15,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:15,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:15,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:15,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:15,426 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:15,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:15,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1586642755, now seen corresponding path program 1 times [2022-07-14 06:23:15,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:15,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611782886] [2022-07-14 06:23:15,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:15,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:15,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:15,428 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:15,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-14 06:23:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:15,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:23:15,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:15,524 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-14 06:23:15,524 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-14 06:23:15,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:15,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:15,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-07-14 06:23:15,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-14 06:23:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:15,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:15,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:15,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611782886] [2022-07-14 06:23:15,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611782886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:15,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:15,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:23:15,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263801713] [2022-07-14 06:23:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:15,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:23:15,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:23:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:23:15,645 INFO L87 Difference]: Start difference. First operand 227 states and 271 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:16,219 INFO L93 Difference]: Finished difference Result 229 states and 269 transitions. [2022-07-14 06:23:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:23:16,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-14 06:23:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:16,220 INFO L225 Difference]: With dead ends: 229 [2022-07-14 06:23:16,220 INFO L226 Difference]: Without dead ends: 229 [2022-07-14 06:23:16,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:23:16,221 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 5 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:16,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 428 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 06:23:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-14 06:23:16,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 227. [2022-07-14 06:23:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 162 states have (on average 1.623456790123457) internal successors, (263), 222 states have internal predecessors, (263), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 267 transitions. [2022-07-14 06:23:16,226 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 267 transitions. Word has length 17 [2022-07-14 06:23:16,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:16,227 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 267 transitions. [2022-07-14 06:23:16,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:16,227 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 267 transitions. [2022-07-14 06:23:16,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-14 06:23:16,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:16,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:16,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:16,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:16,438 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:16,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash 509612229, now seen corresponding path program 1 times [2022-07-14 06:23:16,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:16,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933460958] [2022-07-14 06:23:16,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:16,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:16,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:16,440 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:16,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-14 06:23:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:16,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 06:23:16,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:16,581 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-14 06:23:16,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 22 [2022-07-14 06:23:16,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 06:23:16,681 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 06:23:16,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2022-07-14 06:23:16,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2022-07-14 06:23:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-14 06:23:16,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:23:16,831 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_178 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_178) c_create_data_~data~0.base) .cse0)))) (_ bv1 1)))) is different from false [2022-07-14 06:23:16,854 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:23:16,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-07-14 06:23:16,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2022-07-14 06:23:16,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-14 06:23:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-07-14 06:23:16,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:16,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933460958] [2022-07-14 06:23:16,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933460958] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:23:16,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:23:16,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2022-07-14 06:23:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070443052] [2022-07-14 06:23:16,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:23:16,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:23:16,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:16,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:23:16,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=4, NotChecked=14, Total=90 [2022-07-14 06:23:16,912 INFO L87 Difference]: Start difference. First operand 227 states and 267 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:17,529 INFO L93 Difference]: Finished difference Result 234 states and 271 transitions. [2022-07-14 06:23:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:23:17,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-14 06:23:17,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:17,530 INFO L225 Difference]: With dead ends: 234 [2022-07-14 06:23:17,531 INFO L226 Difference]: Without dead ends: 234 [2022-07-14 06:23:17,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=60, Unknown=5, NotChecked=16, Total=110 [2022-07-14 06:23:17,531 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 28 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:17,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 701 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 274 Unchecked, 0.5s Time] [2022-07-14 06:23:17,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-14 06:23:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 226. [2022-07-14 06:23:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 162 states have (on average 1.6111111111111112) internal successors, (261), 221 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 265 transitions. [2022-07-14 06:23:17,542 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 265 transitions. Word has length 22 [2022-07-14 06:23:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:17,542 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 265 transitions. [2022-07-14 06:23:17,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 265 transitions. [2022-07-14 06:23:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-14 06:23:17,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:17,543 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:17,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:17,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:17,754 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:17,754 INFO L85 PathProgramCache]: Analyzing trace with hash 509612230, now seen corresponding path program 1 times [2022-07-14 06:23:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:17,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766739123] [2022-07-14 06:23:17,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:17,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:17,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:17,756 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:17,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-14 06:23:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:17,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-14 06:23:17,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:17,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:23:17,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-07-14 06:23:17,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 06:23:17,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:18,059 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 06:23:18,059 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-07-14 06:23:18,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-07-14 06:23:18,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-07-14 06:23:18,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-14 06:23:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:18,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:23:18,580 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_222) c_create_data_~data~0.base) (bvadd (_ bv4 32) c_create_data_~data~0.offset)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (bvule (bvadd (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_222) c_create_data_~data~0.base) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_223) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-07-14 06:23:18,624 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_222) c_create_data_~data~0.base) .cse2))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_222) c_create_data_~data~0.base) .cse4) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_223) c_create_data_~data~0.base) .cse4))))))) is different from false [2022-07-14 06:23:18,672 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1) v_ArrVal_222) c_create_data_~data~0.base) .cse1)))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_222 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_223 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_222) c_create_data_~data~0.base) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_223) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-07-14 06:23:18,692 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:23:18,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-07-14 06:23:18,700 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:23:18,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-07-14 06:23:18,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2022-07-14 06:23:18,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 78 [2022-07-14 06:23:18,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-07-14 06:23:18,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2022-07-14 06:23:18,823 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:23:18,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-07-14 06:23:18,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 36 [2022-07-14 06:23:18,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-14 06:23:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-07-14 06:23:18,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:18,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766739123] [2022-07-14 06:23:18,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766739123] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:23:18,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:23:18,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-07-14 06:23:18,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075370066] [2022-07-14 06:23:18,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:23:18,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 06:23:18,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:18,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 06:23:18,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=102, Unknown=3, NotChecked=66, Total=210 [2022-07-14 06:23:18,959 INFO L87 Difference]: Start difference. First operand 226 states and 265 transitions. Second operand has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:21,409 INFO L93 Difference]: Finished difference Result 238 states and 277 transitions. [2022-07-14 06:23:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-14 06:23:21,411 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-14 06:23:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:21,413 INFO L225 Difference]: With dead ends: 238 [2022-07-14 06:23:21,413 INFO L226 Difference]: Without dead ends: 238 [2022-07-14 06:23:21,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=60, Invalid=159, Unknown=3, NotChecked=84, Total=306 [2022-07-14 06:23:21,413 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 10 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:21,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1095 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 586 Invalid, 0 Unknown, 344 Unchecked, 2.2s Time] [2022-07-14 06:23:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-07-14 06:23:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2022-07-14 06:23:21,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 172 states have (on average 1.5755813953488371) internal successors, (271), 231 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:21,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 275 transitions. [2022-07-14 06:23:21,422 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 275 transitions. Word has length 22 [2022-07-14 06:23:21,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:21,422 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 275 transitions. [2022-07-14 06:23:21,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 15 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:21,423 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 275 transitions. [2022-07-14 06:23:21,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-14 06:23:21,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:21,423 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:21,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:21,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:21,624 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:21,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:21,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2075876957, now seen corresponding path program 2 times [2022-07-14 06:23:21,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:21,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827990157] [2022-07-14 06:23:21,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 06:23:21,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:21,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:21,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:21,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-14 06:23:21,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 06:23:21,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:23:21,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-14 06:23:21,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:21,817 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-14 06:23:21,818 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-14 06:23:21,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-07-14 06:23:21,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 06:23:21,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:21,971 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 06:23:21,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-07-14 06:23:21,976 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-07-14 06:23:22,097 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 06:23:22,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-07-14 06:23:22,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-07-14 06:23:22,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-07-14 06:23:22,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-14 06:23:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:22,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:23:22,592 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_285) c_create_data_~data~0.base) (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse0 (_ bv4 32) .cse1) (bvadd .cse0 (_ bv8 32) .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_285) c_create_data_~data~0.base) .cse2) (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32))) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_286) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-07-14 06:23:22,626 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv8 32) (bvmul c_create_data_~counter~0 (_ bv4 32)) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_285) c_create_data_~data~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_286) c_create_data_~data~0.base) .cse1)))))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse3 (let ((.cse4 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4) v_ArrVal_285) c_create_data_~data~0.base) .cse4)))) (bvule (bvadd (_ bv4 32) .cse2 .cse3) (bvadd (_ bv8 32) .cse2 .cse3))))) is different from false [2022-07-14 06:23:22,686 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse1 (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2) v_ArrVal_285) c_create_data_~data~0.base) .cse2)))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 (_ bv12 32) .cse1)))) (forall ((v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse4))) (bvule (bvadd (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32) (select (select (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_285) c_create_data_~data~0.base) .cse4)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_286) c_create_data_~data~0.base) .cse4))))))) is different from false [2022-07-14 06:23:22,769 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_284)) (.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select .cse2 c_create_data_~data~0.base) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_283) .cse0 v_ArrVal_285) c_create_data_~data~0.base) .cse1) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_286) c_create_data_~data~0.base) .cse1)))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (let ((.cse5 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_284) c_create_data_~data~0.base) .cse5) v_ArrVal_285) c_create_data_~data~0.base) .cse5))) (.cse4 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd (_ bv8 32) .cse3 .cse4) (bvadd .cse3 .cse4 (_ bv12 32)))))) is different from false [2022-07-14 06:23:22,831 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_284))) (let ((.cse1 (select (select .cse3 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_283) .cse1 v_ArrVal_285) c_create_data_~data~0.base) .cse2) (bvmul c_create_data_~counter~0 (_ bv4 32)) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_286) c_create_data_~data~0.base) .cse2)))))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (let ((.cse7 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (let ((.cse6 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse7))) (store (store |c_#memory_$Pointer$.offset| .cse6 v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| .cse6 v_ArrVal_284) c_create_data_~data~0.base) .cse7) v_ArrVal_285)) c_create_data_~data~0.base) .cse7))) (.cse5 (bvmul c_create_data_~counter~0 (_ bv4 32)))) (bvule (bvadd .cse4 (_ bv8 32) .cse5) (bvadd .cse4 .cse5 (_ bv12 32)))))) is different from false [2022-07-14 06:23:22,894 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_283) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_284) c_create_data_~data~0.base) .cse2) v_ArrVal_285)) c_create_data_~data~0.base) .cse2)))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_285 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_286 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse3 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse5))) (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse3 v_ArrVal_284))) (let ((.cse4 (select (select .cse6 c_create_data_~data~0.base) .cse5))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse3 v_ArrVal_283) .cse4 v_ArrVal_285) c_create_data_~data~0.base) .cse5) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse4 v_ArrVal_286) c_create_data_~data~0.base) .cse5))))))))) is different from false [2022-07-14 06:23:22,913 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:23:22,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2022-07-14 06:23:22,924 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:23:22,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2022-07-14 06:23:22,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 84 [2022-07-14 06:23:22,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 144 [2022-07-14 06:23:22,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 86 [2022-07-14 06:23:22,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 100 [2022-07-14 06:23:22,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 62 [2022-07-14 06:23:22,983 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:23:22,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2022-07-14 06:23:22,994 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:23:22,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2022-07-14 06:23:22,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:23:23,000 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 56 [2022-07-14 06:23:23,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:23:23,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 32 [2022-07-14 06:23:23,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-14 06:23:23,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-07-14 06:23:23,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:23,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827990157] [2022-07-14 06:23:23,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [827990157] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:23:23,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:23:23,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2022-07-14 06:23:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268564365] [2022-07-14 06:23:23,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:23:23,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-14 06:23:23,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:23,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-14 06:23:23,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=144, Unknown=6, NotChecked=174, Total=380 [2022-07-14 06:23:23,075 INFO L87 Difference]: Start difference. First operand 236 states and 275 transitions. Second operand has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:25,622 INFO L93 Difference]: Finished difference Result 248 states and 287 transitions. [2022-07-14 06:23:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 06:23:25,623 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-14 06:23:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:25,624 INFO L225 Difference]: With dead ends: 248 [2022-07-14 06:23:25,625 INFO L226 Difference]: Without dead ends: 248 [2022-07-14 06:23:25,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=239, Unknown=6, NotChecked=222, Total=552 [2022-07-14 06:23:25,625 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 21 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 549 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:25,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1179 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 537 Invalid, 0 Unknown, 549 Unchecked, 2.1s Time] [2022-07-14 06:23:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-07-14 06:23:25,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2022-07-14 06:23:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 182 states have (on average 1.543956043956044) internal successors, (281), 241 states have internal predecessors, (281), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 285 transitions. [2022-07-14 06:23:25,631 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 285 transitions. Word has length 27 [2022-07-14 06:23:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:25,631 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 285 transitions. [2022-07-14 06:23:25,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.210526315789474) internal successors, (42), 20 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 285 transitions. [2022-07-14 06:23:25,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-14 06:23:25,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:25,632 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:25,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:25,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:25,832 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:25,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:25,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1508640986, now seen corresponding path program 3 times [2022-07-14 06:23:25,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:25,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052797893] [2022-07-14 06:23:25,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 06:23:25,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:25,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:25,835 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:25,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-14 06:23:26,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-14 06:23:26,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 06:23:26,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 06:23:26,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:26,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:23:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 06:23:26,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:26,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052797893] [2022-07-14 06:23:26,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052797893] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:23:26,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:23:26,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-07-14 06:23:26,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458518351] [2022-07-14 06:23:26,250 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:23:26,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:23:26,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:23:26,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:23:26,252 INFO L87 Difference]: Start difference. First operand 246 states and 285 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:26,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:26,344 INFO L93 Difference]: Finished difference Result 243 states and 279 transitions. [2022-07-14 06:23:26,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:23:26,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-07-14 06:23:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:26,346 INFO L225 Difference]: With dead ends: 243 [2022-07-14 06:23:26,346 INFO L226 Difference]: Without dead ends: 243 [2022-07-14 06:23:26,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:23:26,347 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 48 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:26,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1247 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:23:26,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-14 06:23:26,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2022-07-14 06:23:26,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 178 states have (on average 1.5337078651685394) internal successors, (273), 236 states have internal predecessors, (273), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:26,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 277 transitions. [2022-07-14 06:23:26,352 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 277 transitions. Word has length 32 [2022-07-14 06:23:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:26,352 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 277 transitions. [2022-07-14 06:23:26,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:26,353 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 277 transitions. [2022-07-14 06:23:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-14 06:23:26,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:26,354 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:26,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:26,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:26,566 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting create_dataErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:26,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:26,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1091018630, now seen corresponding path program 1 times [2022-07-14 06:23:26,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:26,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021212495] [2022-07-14 06:23:26,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:26,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:26,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:26,568 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:26,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-14 06:23:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:26,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 06:23:26,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:26,757 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 [2022-07-14 06:23:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:23:26,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:26,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:26,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021212495] [2022-07-14 06:23:26,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021212495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:26,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:26,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:23:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184706471] [2022-07-14 06:23:26,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:26,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:23:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:23:26,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:26,764 INFO L87 Difference]: Start difference. First operand 241 states and 277 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:26,959 INFO L93 Difference]: Finished difference Result 243 states and 271 transitions. [2022-07-14 06:23:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:23:26,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-07-14 06:23:26,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:26,961 INFO L225 Difference]: With dead ends: 243 [2022-07-14 06:23:26,961 INFO L226 Difference]: Without dead ends: 243 [2022-07-14 06:23:26,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:26,962 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 22 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:26,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 235 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:23:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-14 06:23:26,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 237. [2022-07-14 06:23:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 178 states have (on average 1.4662921348314606) internal successors, (261), 232 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:26,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 265 transitions. [2022-07-14 06:23:26,967 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 265 transitions. Word has length 42 [2022-07-14 06:23:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:26,967 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 265 transitions. [2022-07-14 06:23:26,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:26,968 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 265 transitions. [2022-07-14 06:23:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-14 06:23:26,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:26,972 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:26,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:27,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:27,172 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting create_dataErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:27,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1091018631, now seen corresponding path program 1 times [2022-07-14 06:23:27,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:27,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313147626] [2022-07-14 06:23:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:27,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:27,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:27,174 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:27,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-14 06:23:27,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:27,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:23:27,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:27,344 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 [2022-07-14 06:23:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:23:27,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:27,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:27,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313147626] [2022-07-14 06:23:27,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313147626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:27,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:27,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 06:23:27,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799060317] [2022-07-14 06:23:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:27,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 06:23:27,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:27,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 06:23:27,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:27,353 INFO L87 Difference]: Start difference. First operand 237 states and 265 transitions. Second operand has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:27,570 INFO L93 Difference]: Finished difference Result 239 states and 259 transitions. [2022-07-14 06:23:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 06:23:27,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-07-14 06:23:27,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:27,572 INFO L225 Difference]: With dead ends: 239 [2022-07-14 06:23:27,572 INFO L226 Difference]: Without dead ends: 239 [2022-07-14 06:23:27,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 06:23:27,573 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 18 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:27,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 234 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 06:23:27,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-14 06:23:27,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 233. [2022-07-14 06:23:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 178 states have (on average 1.398876404494382) internal successors, (249), 228 states have internal predecessors, (249), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:23:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 253 transitions. [2022-07-14 06:23:27,578 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 253 transitions. Word has length 42 [2022-07-14 06:23:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:27,578 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 253 transitions. [2022-07-14 06:23:27,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.5) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:23:27,579 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 253 transitions. [2022-07-14 06:23:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-14 06:23:27,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:27,579 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:27,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:27,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:27,792 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:27,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1777365236, now seen corresponding path program 1 times [2022-07-14 06:23:27,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:27,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219616241] [2022-07-14 06:23:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:27,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:27,794 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:27,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-14 06:23:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:28,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 06:23:28,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:28,058 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 [2022-07-14 06:23:28,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:28,131 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:23:28,312 INFO L356 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2022-07-14 06:23:28,313 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 4 case distinctions, treesize of input 20 treesize of output 36 [2022-07-14 06:23:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 06:23:28,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:23:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:23:28,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:28,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219616241] [2022-07-14 06:23:28,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219616241] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-14 06:23:28,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:23:28,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-14 06:23:28,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132756697] [2022-07-14 06:23:28,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:28,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:23:28,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:28,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:23:28,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:23:28,667 INFO L87 Difference]: Start difference. First operand 233 states and 253 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:28,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:28,809 INFO L93 Difference]: Finished difference Result 275 states and 300 transitions. [2022-07-14 06:23:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:23:28,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-07-14 06:23:28,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:28,810 INFO L225 Difference]: With dead ends: 275 [2022-07-14 06:23:28,810 INFO L226 Difference]: Without dead ends: 275 [2022-07-14 06:23:28,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:23:28,811 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 63 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:28,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 259 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 74 Unchecked, 0.1s Time] [2022-07-14 06:23:28,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-14 06:23:28,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 246. [2022-07-14 06:23:28,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 190 states have (on average 1.4) internal successors, (266), 240 states have internal predecessors, (266), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-14 06:23:28,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 271 transitions. [2022-07-14 06:23:28,816 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 271 transitions. Word has length 45 [2022-07-14 06:23:28,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:28,816 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 271 transitions. [2022-07-14 06:23:28,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 271 transitions. [2022-07-14 06:23:28,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-14 06:23:28,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:28,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:28,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:29,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:29,029 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:29,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1777365235, now seen corresponding path program 1 times [2022-07-14 06:23:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:29,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1118285293] [2022-07-14 06:23:29,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:29,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:29,031 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:29,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-14 06:23:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:29,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-14 06:23:29,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:29,309 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 [2022-07-14 06:23:29,313 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 [2022-07-14 06:23:29,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:29,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:23:29,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:23:29,614 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-14 06:23:29,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-07-14 06:23:29,629 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:23:29,629 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 11 treesize of output 11 [2022-07-14 06:23:29,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 06:23:29,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:23:34,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:34,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1118285293] [2022-07-14 06:23:34,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1118285293] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:23:34,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [524123578] [2022-07-14 06:23:34,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:34,592 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:23:34,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:23:34,594 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:23:34,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-07-14 06:23:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:35,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:23:35,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:35,069 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 [2022-07-14 06:23:35,073 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 [2022-07-14 06:23:35,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:23:35,451 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-14 06:23:35,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-07-14 06:23:35,466 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:23:35,467 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 11 treesize of output 11 [2022-07-14 06:23:35,487 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:23:35,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:35,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [524123578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:35,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:23:35,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-14 06:23:35,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407137193] [2022-07-14 06:23:35,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:35,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:23:35,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:35,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:23:35,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=66, Unknown=2, NotChecked=0, Total=90 [2022-07-14 06:23:35,489 INFO L87 Difference]: Start difference. First operand 246 states and 271 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:35,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:35,896 INFO L93 Difference]: Finished difference Result 317 states and 348 transitions. [2022-07-14 06:23:35,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:23:35,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-07-14 06:23:35,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:35,897 INFO L225 Difference]: With dead ends: 317 [2022-07-14 06:23:35,897 INFO L226 Difference]: Without dead ends: 317 [2022-07-14 06:23:35,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=22, Invalid=66, Unknown=2, NotChecked=0, Total=90 [2022-07-14 06:23:35,898 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 72 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 221 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:35,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 458 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 248 Invalid, 0 Unknown, 221 Unchecked, 0.4s Time] [2022-07-14 06:23:35,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-14 06:23:35,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 249. [2022-07-14 06:23:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 192 states have (on average 1.390625) internal successors, (267), 242 states have internal predecessors, (267), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 06:23:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 273 transitions. [2022-07-14 06:23:35,903 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 273 transitions. Word has length 45 [2022-07-14 06:23:35,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:35,904 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 273 transitions. [2022-07-14 06:23:35,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:35,904 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 273 transitions. [2022-07-14 06:23:35,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 06:23:35,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:35,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:35,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:36,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:36,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:23:36,328 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:36,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1240596815, now seen corresponding path program 1 times [2022-07-14 06:23:36,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:36,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081426277] [2022-07-14 06:23:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:36,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:36,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:36,330 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:36,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-14 06:23:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:36,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 06:23:36,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:36,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:23:36,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:23:36,578 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:23:36,629 INFO L356 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2022-07-14 06:23:36,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 30 treesize of output 36 [2022-07-14 06:23:36,695 INFO L356 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2022-07-14 06:23:36,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2022-07-14 06:23:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:23:36,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:36,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:36,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081426277] [2022-07-14 06:23:36,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081426277] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:36,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:36,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 06:23:36,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910452725] [2022-07-14 06:23:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:36,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:23:36,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:23:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:23:36,736 INFO L87 Difference]: Start difference. First operand 249 states and 273 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:37,069 INFO L93 Difference]: Finished difference Result 293 states and 325 transitions. [2022-07-14 06:23:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 06:23:37,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-07-14 06:23:37,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:37,071 INFO L225 Difference]: With dead ends: 293 [2022-07-14 06:23:37,071 INFO L226 Difference]: Without dead ends: 293 [2022-07-14 06:23:37,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-14 06:23:37,072 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 27 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:37,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 711 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:23:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-07-14 06:23:37,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 259. [2022-07-14 06:23:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 202 states have (on average 1.3762376237623761) internal successors, (278), 252 states have internal predecessors, (278), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 06:23:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 284 transitions. [2022-07-14 06:23:37,077 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 284 transitions. Word has length 47 [2022-07-14 06:23:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:37,077 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 284 transitions. [2022-07-14 06:23:37,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 284 transitions. [2022-07-14 06:23:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 06:23:37,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:37,078 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:37,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:37,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:37,290 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:37,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:37,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1147840785, now seen corresponding path program 1 times [2022-07-14 06:23:37,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:37,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985589361] [2022-07-14 06:23:37,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:37,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:37,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:37,293 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:37,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-14 06:23:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:37,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 06:23:37,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:23:37,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:37,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:37,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985589361] [2022-07-14 06:23:37,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985589361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:37,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:23:37,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:23:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550346791] [2022-07-14 06:23:37,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:37,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:23:37,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:23:37,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:23:37,498 INFO L87 Difference]: Start difference. First operand 259 states and 284 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:37,518 INFO L93 Difference]: Finished difference Result 267 states and 290 transitions. [2022-07-14 06:23:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:23:37,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-07-14 06:23:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:37,519 INFO L225 Difference]: With dead ends: 267 [2022-07-14 06:23:37,520 INFO L226 Difference]: Without dead ends: 267 [2022-07-14 06:23:37,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:23:37,520 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 3 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:37,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 458 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 06:23:37,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-14 06:23:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 265. [2022-07-14 06:23:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 208 states have (on average 1.3557692307692308) internal successors, (282), 258 states have internal predecessors, (282), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-14 06:23:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 288 transitions. [2022-07-14 06:23:37,526 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 288 transitions. Word has length 47 [2022-07-14 06:23:37,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:37,526 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 288 transitions. [2022-07-14 06:23:37,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:37,527 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 288 transitions. [2022-07-14 06:23:37,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 06:23:37,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:37,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:37,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:37,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:37,739 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:37,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:37,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1348996156, now seen corresponding path program 1 times [2022-07-14 06:23:37,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:37,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206457604] [2022-07-14 06:23:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:37,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:37,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:37,742 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:37,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-14 06:23:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:37,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 06:23:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:37,996 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 [2022-07-14 06:23:38,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:38,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:23:38,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:23:38,414 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-14 06:23:38,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2022-07-14 06:23:38,429 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:23:38,430 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 11 treesize of output 11 [2022-07-14 06:23:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 06:23:38,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:23:42,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:42,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206457604] [2022-07-14 06:23:42,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206457604] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:23:42,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1461566805] [2022-07-14 06:23:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:42,540 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:23:42,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:23:42,541 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:23:42,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-07-14 06:23:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:43,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 06:23:43,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:43,076 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 [2022-07-14 06:23:43,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:23:43,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-14 06:23:43,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 06:23:44,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:23:44,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:23:44,245 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-14 06:23:44,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-07-14 06:23:44,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:23:44,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:44,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1461566805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:44,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:23:44,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-07-14 06:23:44,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919832653] [2022-07-14 06:23:44,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:44,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:23:44,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:44,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:23:44,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=258, Unknown=1, NotChecked=0, Total=306 [2022-07-14 06:23:44,393 INFO L87 Difference]: Start difference. First operand 265 states and 288 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:44,901 INFO L93 Difference]: Finished difference Result 305 states and 332 transitions. [2022-07-14 06:23:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:23:44,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-07-14 06:23:44,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:44,903 INFO L225 Difference]: With dead ends: 305 [2022-07-14 06:23:44,903 INFO L226 Difference]: Without dead ends: 305 [2022-07-14 06:23:44,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=60, Invalid=319, Unknown=1, NotChecked=0, Total=380 [2022-07-14 06:23:44,904 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 11 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:44,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 538 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 143 Unchecked, 0.4s Time] [2022-07-14 06:23:44,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-07-14 06:23:44,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2022-07-14 06:23:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 245 states have (on average 1.3142857142857143) internal successors, (322), 295 states have internal predecessors, (322), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-14 06:23:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 331 transitions. [2022-07-14 06:23:44,915 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 331 transitions. Word has length 47 [2022-07-14 06:23:44,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:44,915 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 331 transitions. [2022-07-14 06:23:44,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 331 transitions. [2022-07-14 06:23:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-14 06:23:44,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:44,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:44,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:45,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:45,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:45,326 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:45,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:45,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1348996155, now seen corresponding path program 1 times [2022-07-14 06:23:45,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:45,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661323623] [2022-07-14 06:23:45,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:45,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:45,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:45,328 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:45,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-14 06:23:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:45,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 06:23:45,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:45,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:45,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:23:45,954 INFO L356 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2022-07-14 06:23:45,954 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 4 case distinctions, treesize of input 20 treesize of output 36 [2022-07-14 06:23:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 06:23:46,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:23:48,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:23:48,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:48,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661323623] [2022-07-14 06:23:48,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661323623] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-14 06:23:48,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:23:48,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-14 06:23:48,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901041414] [2022-07-14 06:23:48,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:48,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:23:48,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:23:48,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:23:48,024 INFO L87 Difference]: Start difference. First operand 304 states and 331 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:48,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:48,304 INFO L93 Difference]: Finished difference Result 332 states and 359 transitions. [2022-07-14 06:23:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:23:48,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2022-07-14 06:23:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:48,305 INFO L225 Difference]: With dead ends: 332 [2022-07-14 06:23:48,306 INFO L226 Difference]: Without dead ends: 332 [2022-07-14 06:23:48,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:23:48,306 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 57 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:48,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 267 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 88 Unchecked, 0.3s Time] [2022-07-14 06:23:48,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-07-14 06:23:48,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 306. [2022-07-14 06:23:48,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 247 states have (on average 1.311740890688259) internal successors, (324), 297 states have internal predecessors, (324), 3 states have call successors, (3), 3 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-07-14 06:23:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 333 transitions. [2022-07-14 06:23:48,313 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 333 transitions. Word has length 47 [2022-07-14 06:23:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:48,313 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 333 transitions. [2022-07-14 06:23:48,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:48,313 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 333 transitions. [2022-07-14 06:23:48,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-14 06:23:48,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:48,314 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:48,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-07-14 06:23:48,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:48,527 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:48,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:48,527 INFO L85 PathProgramCache]: Analyzing trace with hash 10765426, now seen corresponding path program 1 times [2022-07-14 06:23:48,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:48,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744068103] [2022-07-14 06:23:48,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:48,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:48,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:48,529 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:48,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-14 06:23:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:48,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 06:23:48,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:48,840 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 [2022-07-14 06:23:48,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:48,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:23:49,171 INFO L356 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2022-07-14 06:23:49,171 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 4 case distinctions, treesize of input 20 treesize of output 32 [2022-07-14 06:23:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 06:23:49,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:23:53,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:23:53,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744068103] [2022-07-14 06:23:53,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744068103] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:23:53,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [296377195] [2022-07-14 06:23:53,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:53,339 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:23:53,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:23:53,340 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:23:53,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-07-14 06:23:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:53,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 06:23:53,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:53,835 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 [2022-07-14 06:23:56,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:23:56,068 INFO L356 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2022-07-14 06:23:56,068 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-07-14 06:23:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:23:56,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:23:56,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [296377195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:23:56,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:23:56,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2022-07-14 06:23:56,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373989639] [2022-07-14 06:23:56,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:23:56,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:23:56,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:23:56,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:23:56,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=78, Unknown=3, NotChecked=0, Total=110 [2022-07-14 06:23:56,091 INFO L87 Difference]: Start difference. First operand 306 states and 333 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:56,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:23:56,394 INFO L93 Difference]: Finished difference Result 358 states and 391 transitions. [2022-07-14 06:23:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:23:56,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-07-14 06:23:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:23:56,397 INFO L225 Difference]: With dead ends: 358 [2022-07-14 06:23:56,397 INFO L226 Difference]: Without dead ends: 358 [2022-07-14 06:23:56,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=29, Invalid=78, Unknown=3, NotChecked=0, Total=110 [2022-07-14 06:23:56,398 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 75 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:23:56,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 406 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 175 Unchecked, 0.3s Time] [2022-07-14 06:23:56,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-14 06:23:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 317. [2022-07-14 06:23:56,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 257 states have (on average 1.311284046692607) internal successors, (337), 307 states have internal predecessors, (337), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 06:23:56,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 348 transitions. [2022-07-14 06:23:56,405 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 348 transitions. Word has length 49 [2022-07-14 06:23:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:23:56,405 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 348 transitions. [2022-07-14 06:23:56,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:23:56,405 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 348 transitions. [2022-07-14 06:23:56,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-14 06:23:56,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:23:56,406 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:23:56,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-07-14 06:23:56,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-14 06:23:56,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:23:56,812 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:23:56,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:23:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash 10765427, now seen corresponding path program 1 times [2022-07-14 06:23:56,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:23:56,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662697063] [2022-07-14 06:23:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:23:56,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:23:56,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:23:56,814 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:23:56,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-14 06:23:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:23:57,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-14 06:23:57,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:23:57,111 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 [2022-07-14 06:23:57,116 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 [2022-07-14 06:23:57,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:23:57,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:23:57,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:23:57,516 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-14 06:23:57,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-07-14 06:23:57,529 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:23:57,529 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 11 treesize of output 11 [2022-07-14 06:23:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 06:23:57,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:24:04,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:04,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662697063] [2022-07-14 06:24:04,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662697063] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:24:04,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [984047143] [2022-07-14 06:24:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:04,165 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:24:04,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:24:04,166 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:24:04,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-07-14 06:24:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:04,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 06:24:04,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:04,642 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 [2022-07-14 06:24:04,647 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 [2022-07-14 06:24:06,701 WARN L855 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_1896 (_ BitVec 32))) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1896) |c_create_data_#t~malloc7.base| (_ bv80 32)))))) is different from true [2022-07-14 06:24:07,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:24:07,059 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-14 06:24:07,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-07-14 06:24:07,080 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:24:07,080 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 11 treesize of output 11 [2022-07-14 06:24:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:07,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:07,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [984047143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:07,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:24:07,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 8 [2022-07-14 06:24:07,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790026484] [2022-07-14 06:24:07,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:07,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:24:07,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:07,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:24:07,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=67, Unknown=3, NotChecked=16, Total=110 [2022-07-14 06:24:07,099 INFO L87 Difference]: Start difference. First operand 317 states and 348 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:07,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:07,597 INFO L93 Difference]: Finished difference Result 382 states and 417 transitions. [2022-07-14 06:24:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:24:07,598 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-07-14 06:24:07,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:07,599 INFO L225 Difference]: With dead ends: 382 [2022-07-14 06:24:07,599 INFO L226 Difference]: Without dead ends: 382 [2022-07-14 06:24:07,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=24, Invalid=67, Unknown=3, NotChecked=16, Total=110 [2022-07-14 06:24:07,600 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 72 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 432 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:07,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 458 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 432 Unchecked, 0.5s Time] [2022-07-14 06:24:07,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-14 06:24:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 317. [2022-07-14 06:24:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 257 states have (on average 1.3073929961089494) internal successors, (336), 307 states have internal predecessors, (336), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 06:24:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 347 transitions. [2022-07-14 06:24:07,607 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 347 transitions. Word has length 49 [2022-07-14 06:24:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:07,607 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 347 transitions. [2022-07-14 06:24:07,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 347 transitions. [2022-07-14 06:24:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-14 06:24:07,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:07,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:07,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:07,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-07-14 06:24:08,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:08,014 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash -694813700, now seen corresponding path program 1 times [2022-07-14 06:24:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:08,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462869974] [2022-07-14 06:24:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:08,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:08,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:08,016 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:08,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-14 06:24:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:08,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 06:24:08,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:08,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:08,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:08,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462869974] [2022-07-14 06:24:08,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462869974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:08,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:24:08,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 06:24:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322136207] [2022-07-14 06:24:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:08,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:24:08,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:24:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:24:08,246 INFO L87 Difference]: Start difference. First operand 317 states and 347 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:08,514 INFO L93 Difference]: Finished difference Result 316 states and 346 transitions. [2022-07-14 06:24:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:24:08,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-07-14 06:24:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:08,515 INFO L225 Difference]: With dead ends: 316 [2022-07-14 06:24:08,516 INFO L226 Difference]: Without dead ends: 316 [2022-07-14 06:24:08,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:24:08,516 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 140 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:08,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 220 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:24:08,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-14 06:24:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2022-07-14 06:24:08,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 257 states have (on average 1.3035019455252919) internal successors, (335), 306 states have internal predecessors, (335), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 06:24:08,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 346 transitions. [2022-07-14 06:24:08,522 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 346 transitions. Word has length 49 [2022-07-14 06:24:08,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:08,523 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 346 transitions. [2022-07-14 06:24:08,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 346 transitions. [2022-07-14 06:24:08,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-14 06:24:08,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:08,524 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:08,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:08,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:08,735 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:08,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:08,736 INFO L85 PathProgramCache]: Analyzing trace with hash -694813699, now seen corresponding path program 1 times [2022-07-14 06:24:08,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:08,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215183223] [2022-07-14 06:24:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:08,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:08,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:08,737 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:08,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-14 06:24:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:08,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 06:24:08,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:09,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:09,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:09,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215183223] [2022-07-14 06:24:09,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215183223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:09,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:24:09,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 06:24:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833719320] [2022-07-14 06:24:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:09,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:24:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:24:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:24:09,012 INFO L87 Difference]: Start difference. First operand 316 states and 346 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:09,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:09,151 INFO L93 Difference]: Finished difference Result 307 states and 337 transitions. [2022-07-14 06:24:09,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:24:09,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-07-14 06:24:09,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:09,152 INFO L225 Difference]: With dead ends: 307 [2022-07-14 06:24:09,152 INFO L226 Difference]: Without dead ends: 307 [2022-07-14 06:24:09,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:24:09,153 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 218 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:09,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 184 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 06:24:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-07-14 06:24:09,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2022-07-14 06:24:09,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 257 states have (on average 1.2684824902723735) internal successors, (326), 297 states have internal predecessors, (326), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 06:24:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 337 transitions. [2022-07-14 06:24:09,158 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 337 transitions. Word has length 49 [2022-07-14 06:24:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:09,159 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 337 transitions. [2022-07-14 06:24:09,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:09,159 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 337 transitions. [2022-07-14 06:24:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-14 06:24:09,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:09,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:09,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:09,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:09,371 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash -64388068, now seen corresponding path program 1 times [2022-07-14 06:24:09,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:09,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568974401] [2022-07-14 06:24:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:09,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:09,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:09,373 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:09,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-07-14 06:24:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:09,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 06:24:09,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:09,670 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:24:09,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-14 06:24:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:09,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:09,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:09,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568974401] [2022-07-14 06:24:09,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568974401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:09,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:24:09,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:24:09,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536813025] [2022-07-14 06:24:09,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:09,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:24:09,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:24:09,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:24:09,691 INFO L87 Difference]: Start difference. First operand 307 states and 337 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:10,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:10,137 INFO L93 Difference]: Finished difference Result 328 states and 359 transitions. [2022-07-14 06:24:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:24:10,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-07-14 06:24:10,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:10,138 INFO L225 Difference]: With dead ends: 328 [2022-07-14 06:24:10,138 INFO L226 Difference]: Without dead ends: 328 [2022-07-14 06:24:10,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:24:10,139 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 199 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:10,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 329 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 06:24:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-14 06:24:10,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 306. [2022-07-14 06:24:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 257 states have (on average 1.264591439688716) internal successors, (325), 296 states have internal predecessors, (325), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 06:24:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 336 transitions. [2022-07-14 06:24:10,146 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 336 transitions. Word has length 50 [2022-07-14 06:24:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:10,146 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 336 transitions. [2022-07-14 06:24:10,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:10,147 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 336 transitions. [2022-07-14 06:24:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-14 06:24:10,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:10,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:10,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:10,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:10,360 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:10,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:10,361 INFO L85 PathProgramCache]: Analyzing trace with hash -64388067, now seen corresponding path program 1 times [2022-07-14 06:24:10,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:10,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369781693] [2022-07-14 06:24:10,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:10,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:10,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:10,362 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:10,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-07-14 06:24:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:10,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 06:24:10,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:10,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:24:10,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:24:10,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-14 06:24:10,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 06:24:10,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:10,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:10,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:10,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369781693] [2022-07-14 06:24:10,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369781693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:10,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:24:10,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:24:10,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6877507] [2022-07-14 06:24:10,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:10,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:24:10,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:24:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:24:10,796 INFO L87 Difference]: Start difference. First operand 306 states and 336 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:11,448 INFO L93 Difference]: Finished difference Result 344 states and 375 transitions. [2022-07-14 06:24:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:24:11,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2022-07-14 06:24:11,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:11,449 INFO L225 Difference]: With dead ends: 344 [2022-07-14 06:24:11,449 INFO L226 Difference]: Without dead ends: 344 [2022-07-14 06:24:11,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:24:11,450 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 181 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:11,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 348 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 06:24:11,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-07-14 06:24:11,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 305. [2022-07-14 06:24:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 257 states have (on average 1.2607003891050583) internal successors, (324), 295 states have internal predecessors, (324), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 06:24:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 335 transitions. [2022-07-14 06:24:11,456 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 335 transitions. Word has length 50 [2022-07-14 06:24:11,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:11,457 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 335 transitions. [2022-07-14 06:24:11,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:11,457 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 335 transitions. [2022-07-14 06:24:11,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-14 06:24:11,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:11,458 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:11,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-07-14 06:24:11,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:11,667 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:11,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1755643938, now seen corresponding path program 1 times [2022-07-14 06:24:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:11,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717632669] [2022-07-14 06:24:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:11,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:11,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:11,669 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:11,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-07-14 06:24:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:12,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 06:24:12,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:12,030 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 [2022-07-14 06:24:12,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:24:12,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:24:12,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:24:12,393 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-14 06:24:12,393 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2022-07-14 06:24:12,410 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:24:12,410 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 11 treesize of output 11 [2022-07-14 06:24:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 06:24:12,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:24:14,630 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_create_data_~data~0.base_68 (_ BitVec 32)) (v_ArrVal_2479 (_ BitVec 32)) (|v_create_data_#t~mem9.base_94| (_ BitVec 32))) (or (not (= (bvneg (select |c_#valid| v_create_data_~data~0.base_68)) (_ bv0 1))) (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_append_~pointerToList#1.offset|))) (and (bvule .cse0 (select (store (store |c_#length| v_create_data_~data~0.base_68 v_ArrVal_2479) |v_create_data_#t~mem9.base_94| (_ bv80 32)) |c_ULTIMATE.start_append_~pointerToList#1.base|)) (bvule |c_ULTIMATE.start_append_~pointerToList#1.offset| .cse0))))) is different from false [2022-07-14 06:24:14,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:14,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717632669] [2022-07-14 06:24:14,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717632669] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:24:14,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [953261190] [2022-07-14 06:24:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:14,636 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:24:14,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:24:14,637 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:24:14,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-07-14 06:24:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:15,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 06:24:15,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:15,108 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 [2022-07-14 06:24:15,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:24:15,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-14 06:24:15,295 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 06:24:16,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:24:16,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:24:16,069 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-14 06:24:16,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-07-14 06:24:16,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:16,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:16,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [953261190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:16,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:24:16,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-07-14 06:24:16,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406382937] [2022-07-14 06:24:16,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:16,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:24:16,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:24:16,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=229, Unknown=1, NotChecked=30, Total=306 [2022-07-14 06:24:16,218 INFO L87 Difference]: Start difference. First operand 305 states and 335 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:16,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:16,793 INFO L93 Difference]: Finished difference Result 323 states and 355 transitions. [2022-07-14 06:24:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:24:16,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-07-14 06:24:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:16,795 INFO L225 Difference]: With dead ends: 323 [2022-07-14 06:24:16,796 INFO L226 Difference]: Without dead ends: 323 [2022-07-14 06:24:16,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=59, Invalid=286, Unknown=1, NotChecked=34, Total=380 [2022-07-14 06:24:16,796 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 13 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:16,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 514 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 121 Unchecked, 0.4s Time] [2022-07-14 06:24:16,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-14 06:24:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 322. [2022-07-14 06:24:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 273 states have (on average 1.2564102564102564) internal successors, (343), 311 states have internal predecessors, (343), 3 states have call successors, (3), 3 states have call predecessors, (3), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-14 06:24:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 354 transitions. [2022-07-14 06:24:16,802 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 354 transitions. Word has length 51 [2022-07-14 06:24:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:16,802 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 354 transitions. [2022-07-14 06:24:16,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 354 transitions. [2022-07-14 06:24:16,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-14 06:24:16,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:16,803 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:16,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:17,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:17,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:17,210 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:17,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1755643937, now seen corresponding path program 1 times [2022-07-14 06:24:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:17,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033200244] [2022-07-14 06:24:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:17,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:17,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:17,212 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:17,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-07-14 06:24:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:17,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:24:17,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:17,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:24:17,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:24:17,778 INFO L356 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2022-07-14 06:24:17,778 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 4 case distinctions, treesize of input 20 treesize of output 32 [2022-07-14 06:24:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 06:24:17,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:24:21,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:21,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033200244] [2022-07-14 06:24:21,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033200244] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:24:21,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [515281926] [2022-07-14 06:24:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:21,929 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:24:21,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:24:21,930 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:24:21,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-07-14 06:24:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:22,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 06:24:22,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:22,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-14 06:24:23,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:24:23,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:24:23,074 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-14 06:24:23,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 26 [2022-07-14 06:24:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:23,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:23,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [515281926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:23,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:24:23,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-07-14 06:24:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020779002] [2022-07-14 06:24:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:23,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:24:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:24:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2022-07-14 06:24:23,181 INFO L87 Difference]: Start difference. First operand 322 states and 354 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:23,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:23,589 INFO L93 Difference]: Finished difference Result 323 states and 354 transitions. [2022-07-14 06:24:23,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:24:23,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-07-14 06:24:23,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:23,590 INFO L225 Difference]: With dead ends: 323 [2022-07-14 06:24:23,590 INFO L226 Difference]: Without dead ends: 323 [2022-07-14 06:24:23,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2022-07-14 06:24:23,591 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 13 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:23,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 648 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 145 Unchecked, 0.3s Time] [2022-07-14 06:24:23,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-14 06:24:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 312. [2022-07-14 06:24:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 264 states have (on average 1.2575757575757576) internal successors, (332), 302 states have internal predecessors, (332), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 06:24:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 342 transitions. [2022-07-14 06:24:23,597 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 342 transitions. Word has length 51 [2022-07-14 06:24:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:23,597 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 342 transitions. [2022-07-14 06:24:23,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:23,598 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 342 transitions. [2022-07-14 06:24:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-14 06:24:23,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:23,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:23,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-07-14 06:24:23,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:24,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:24:24,012 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:24,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash 94040226, now seen corresponding path program 1 times [2022-07-14 06:24:24,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:24,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064081431] [2022-07-14 06:24:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:24,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:24,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:24,014 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:24,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-07-14 06:24:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:24,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 06:24:24,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:24,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:24:24,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-14 06:24:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:24,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:24,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:24,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064081431] [2022-07-14 06:24:24,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064081431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:24,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:24:24,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:24:24,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004378102] [2022-07-14 06:24:24,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:24,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:24:24,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:24,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:24:24,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:24:24,382 INFO L87 Difference]: Start difference. First operand 312 states and 342 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:24,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:24,793 INFO L93 Difference]: Finished difference Result 334 states and 365 transitions. [2022-07-14 06:24:24,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:24:24,793 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-07-14 06:24:24,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:24,794 INFO L225 Difference]: With dead ends: 334 [2022-07-14 06:24:24,794 INFO L226 Difference]: Without dead ends: 334 [2022-07-14 06:24:24,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:24:24,795 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 182 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:24,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 332 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 06:24:24,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-14 06:24:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 311. [2022-07-14 06:24:24,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 264 states have (on average 1.253787878787879) internal successors, (331), 301 states have internal predecessors, (331), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 06:24:24,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 341 transitions. [2022-07-14 06:24:24,801 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 341 transitions. Word has length 54 [2022-07-14 06:24:24,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:24,801 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 341 transitions. [2022-07-14 06:24:24,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:24,801 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 341 transitions. [2022-07-14 06:24:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-14 06:24:24,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:24,802 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:24,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-07-14 06:24:25,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:25,014 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:25,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:25,015 INFO L85 PathProgramCache]: Analyzing trace with hash 94040227, now seen corresponding path program 1 times [2022-07-14 06:24:25,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:25,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661971175] [2022-07-14 06:24:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:25,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:25,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:25,017 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:25,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-07-14 06:24:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:25,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 06:24:25,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:25,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:24:25,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:24:25,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 06:24:25,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-14 06:24:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:25,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:25,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:25,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661971175] [2022-07-14 06:24:25,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661971175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:25,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:24:25,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:24:25,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136476774] [2022-07-14 06:24:25,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:25,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:24:25,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:25,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:24:25,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:24:25,426 INFO L87 Difference]: Start difference. First operand 311 states and 341 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:26,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:26,054 INFO L93 Difference]: Finished difference Result 350 states and 381 transitions. [2022-07-14 06:24:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:24:26,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-07-14 06:24:26,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:26,057 INFO L225 Difference]: With dead ends: 350 [2022-07-14 06:24:26,057 INFO L226 Difference]: Without dead ends: 350 [2022-07-14 06:24:26,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 06:24:26,058 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 166 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:26,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 351 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 06:24:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-14 06:24:26,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 310. [2022-07-14 06:24:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 264 states have (on average 1.25) internal successors, (330), 300 states have internal predecessors, (330), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 06:24:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 340 transitions. [2022-07-14 06:24:26,063 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 340 transitions. Word has length 54 [2022-07-14 06:24:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:26,063 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 340 transitions. [2022-07-14 06:24:26,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 340 transitions. [2022-07-14 06:24:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-14 06:24:26,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:26,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:26,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:26,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:26,275 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting create_dataErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:26,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1693576345, now seen corresponding path program 1 times [2022-07-14 06:24:26,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:26,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756047730] [2022-07-14 06:24:26,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:26,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:26,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:26,278 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:26,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-07-14 06:24:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:26,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 06:24:26,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:26,826 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 [2022-07-14 06:24:26,857 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-14 06:24:26,858 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-07-14 06:24:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:26,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:24:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:26,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:26,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756047730] [2022-07-14 06:24:26,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756047730] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:24:26,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:24:26,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2022-07-14 06:24:26,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948275508] [2022-07-14 06:24:26,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:24:26,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 06:24:26,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:26,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 06:24:26,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 06:24:26,897 INFO L87 Difference]: Start difference. First operand 310 states and 340 transitions. Second operand has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:24:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:27,221 INFO L93 Difference]: Finished difference Result 315 states and 345 transitions. [2022-07-14 06:24:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 06:24:27,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-14 06:24:27,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:27,223 INFO L225 Difference]: With dead ends: 315 [2022-07-14 06:24:27,223 INFO L226 Difference]: Without dead ends: 315 [2022-07-14 06:24:27,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:24:27,223 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 50 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:27,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 243 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:24:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-14 06:24:27,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 309. [2022-07-14 06:24:27,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 264 states have (on average 1.2424242424242424) internal successors, (328), 299 states have internal predecessors, (328), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 06:24:27,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 338 transitions. [2022-07-14 06:24:27,229 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 338 transitions. Word has length 54 [2022-07-14 06:24:27,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:27,229 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 338 transitions. [2022-07-14 06:24:27,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:24:27,230 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 338 transitions. [2022-07-14 06:24:27,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-14 06:24:27,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:27,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:27,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-07-14 06:24:27,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:27,446 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting create_dataErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:27,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1693576346, now seen corresponding path program 1 times [2022-07-14 06:24:27,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:27,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737957162] [2022-07-14 06:24:27,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:27,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:27,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:27,449 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:27,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-07-14 06:24:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:27,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 06:24:27,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:27,914 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 [2022-07-14 06:24:27,980 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 06:24:27,980 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-14 06:24:27,995 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:27,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:24:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:28,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:28,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737957162] [2022-07-14 06:24:28,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737957162] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 06:24:28,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:24:28,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2022-07-14 06:24:28,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627490309] [2022-07-14 06:24:28,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:24:28,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:24:28,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:28,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:24:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:24:28,262 INFO L87 Difference]: Start difference. First operand 309 states and 338 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:24:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:28,783 INFO L93 Difference]: Finished difference Result 317 states and 343 transitions. [2022-07-14 06:24:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:24:28,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-07-14 06:24:28,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:28,785 INFO L225 Difference]: With dead ends: 317 [2022-07-14 06:24:28,785 INFO L226 Difference]: Without dead ends: 317 [2022-07-14 06:24:28,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:24:28,785 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 64 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:28,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 364 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 125 Invalid, 0 Unknown, 72 Unchecked, 0.5s Time] [2022-07-14 06:24:28,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-14 06:24:28,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 289. [2022-07-14 06:24:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 248 states have (on average 1.217741935483871) internal successors, (302), 279 states have internal predecessors, (302), 3 states have call successors, (3), 3 states have call predecessors, (3), 6 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 06:24:28,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 312 transitions. [2022-07-14 06:24:28,794 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 312 transitions. Word has length 54 [2022-07-14 06:24:28,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:28,794 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 312 transitions. [2022-07-14 06:24:28,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 06:24:28,794 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 312 transitions. [2022-07-14 06:24:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-14 06:24:28,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:28,795 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:28,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-07-14 06:24:29,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:29,011 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:29,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1379720125, now seen corresponding path program 1 times [2022-07-14 06:24:29,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:29,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099023655] [2022-07-14 06:24:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:29,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:29,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:29,013 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:29,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-07-14 06:24:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:29,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-14 06:24:29,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:29,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:24:29,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:24:29,713 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-14 06:24:29,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 24 [2022-07-14 06:24:29,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 06:24:29,852 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-14 06:24:29,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2022-07-14 06:24:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-14 06:24:29,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:29,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:29,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099023655] [2022-07-14 06:24:29,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099023655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:29,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:24:29,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-14 06:24:29,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070930797] [2022-07-14 06:24:29,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:29,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 06:24:29,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 06:24:29,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-14 06:24:29,888 INFO L87 Difference]: Start difference. First operand 289 states and 312 transitions. Second operand has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:31,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:31,034 INFO L93 Difference]: Finished difference Result 426 states and 475 transitions. [2022-07-14 06:24:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-14 06:24:31,035 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-14 06:24:31,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:31,036 INFO L225 Difference]: With dead ends: 426 [2022-07-14 06:24:31,036 INFO L226 Difference]: Without dead ends: 426 [2022-07-14 06:24:31,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-07-14 06:24:31,037 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 325 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:31,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 624 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 536 Invalid, 0 Unknown, 112 Unchecked, 1.0s Time] [2022-07-14 06:24:31,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-14 06:24:31,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 325. [2022-07-14 06:24:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 282 states have (on average 1.24822695035461) internal successors, (352), 310 states have internal predecessors, (352), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (12), 11 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-14 06:24:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 369 transitions. [2022-07-14 06:24:31,044 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 369 transitions. Word has length 55 [2022-07-14 06:24:31,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:31,044 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 369 transitions. [2022-07-14 06:24:31,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:31,045 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 369 transitions. [2022-07-14 06:24:31,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-14 06:24:31,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:31,046 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:31,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:31,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:31,259 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:31,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:31,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1379720124, now seen corresponding path program 1 times [2022-07-14 06:24:31,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:31,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529296645] [2022-07-14 06:24:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:31,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:31,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:31,261 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:31,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-07-14 06:24:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:31,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-14 06:24:31,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:31,728 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 [2022-07-14 06:24:31,752 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:24:31,752 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 11 treesize of output 11 [2022-07-14 06:24:32,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-14 06:24:32,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-14 06:24:32,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-14 06:24:32,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-14 06:24:32,318 INFO L356 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2022-07-14 06:24:32,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2022-07-14 06:24:32,329 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-14 06:24:32,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-07-14 06:24:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:32,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:24:32,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:32,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529296645] [2022-07-14 06:24:32,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529296645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:24:32,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:24:32,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-14 06:24:32,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682099147] [2022-07-14 06:24:32,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:32,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 06:24:32,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:32,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 06:24:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-14 06:24:32,359 INFO L87 Difference]: Start difference. First operand 325 states and 369 transitions. Second operand has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:34,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:34,278 INFO L93 Difference]: Finished difference Result 531 states and 597 transitions. [2022-07-14 06:24:34,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-14 06:24:34,279 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-07-14 06:24:34,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:34,280 INFO L225 Difference]: With dead ends: 531 [2022-07-14 06:24:34,281 INFO L226 Difference]: Without dead ends: 531 [2022-07-14 06:24:34,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-07-14 06:24:34,281 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 451 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:34,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 724 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 677 Invalid, 0 Unknown, 115 Unchecked, 1.5s Time] [2022-07-14 06:24:34,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-07-14 06:24:34,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 349. [2022-07-14 06:24:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 305 states have (on average 1.2557377049180327) internal successors, (383), 331 states have internal predecessors, (383), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (15), 14 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-14 06:24:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 404 transitions. [2022-07-14 06:24:34,288 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 404 transitions. Word has length 55 [2022-07-14 06:24:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:34,289 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 404 transitions. [2022-07-14 06:24:34,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:34,289 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 404 transitions. [2022-07-14 06:24:34,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-14 06:24:34,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:34,290 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:34,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:34,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:24:34,504 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:34,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash -266687074, now seen corresponding path program 1 times [2022-07-14 06:24:34,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:34,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083581760] [2022-07-14 06:24:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:34,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:34,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:34,506 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:34,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-07-14 06:24:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:35,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:24:35,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:35,093 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 [2022-07-14 06:24:35,637 INFO L356 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2022-07-14 06:24:35,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 33 treesize of output 56 [2022-07-14 06:24:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:35,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:24:38,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:24:38,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083581760] [2022-07-14 06:24:38,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083581760] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:24:38,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [689067243] [2022-07-14 06:24:38,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:38,075 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:24:38,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:24:38,076 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:24:38,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2022-07-14 06:24:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:38,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:24:38,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:38,859 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 [2022-07-14 06:24:47,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:24:47,312 INFO L356 Elim1Store]: treesize reduction 70, result has 34.6 percent of original size [2022-07-14 06:24:47,312 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 5 case distinctions, treesize of input 28 treesize of output 53 [2022-07-14 06:24:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:47,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:24:57,038 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:57,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [689067243] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-14 06:24:57,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:24:57,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 15 [2022-07-14 06:24:57,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121145106] [2022-07-14 06:24:57,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:24:57,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:24:57,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:24:57,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:24:57,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=191, Unknown=7, NotChecked=0, Total=272 [2022-07-14 06:24:57,040 INFO L87 Difference]: Start difference. First operand 349 states and 404 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:24:57,201 INFO L93 Difference]: Finished difference Result 396 states and 459 transitions. [2022-07-14 06:24:57,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:24:57,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-07-14 06:24:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:24:57,203 INFO L225 Difference]: With dead ends: 396 [2022-07-14 06:24:57,203 INFO L226 Difference]: Without dead ends: 396 [2022-07-14 06:24:57,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=74, Invalid=191, Unknown=7, NotChecked=0, Total=272 [2022-07-14 06:24:57,204 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 74 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:24:57,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 233 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 78 Unchecked, 0.2s Time] [2022-07-14 06:24:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-07-14 06:24:57,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 370. [2022-07-14 06:24:57,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 325 states have (on average 1.2553846153846153) internal successors, (408), 349 states have internal predecessors, (408), 6 states have call successors, (6), 3 states have call predecessors, (6), 7 states have return successors, (19), 17 states have call predecessors, (19), 6 states have call successors, (19) [2022-07-14 06:24:57,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 433 transitions. [2022-07-14 06:24:57,210 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 433 transitions. Word has length 56 [2022-07-14 06:24:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:24:57,211 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 433 transitions. [2022-07-14 06:24:57,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 7 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:24:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 433 transitions. [2022-07-14 06:24:57,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-14 06:24:57,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:24:57,212 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:24:57,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:57,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2022-07-14 06:24:57,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:24:57,629 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:24:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:24:57,630 INFO L85 PathProgramCache]: Analyzing trace with hash -266687073, now seen corresponding path program 1 times [2022-07-14 06:24:57,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:24:57,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560526949] [2022-07-14 06:24:57,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:24:57,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:24:57,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:24:57,631 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:24:57,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-07-14 06:24:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:24:58,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-14 06:24:58,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:24:58,169 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 [2022-07-14 06:24:58,173 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 [2022-07-14 06:24:58,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:24:58,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:24:59,089 INFO L356 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-07-14 06:24:59,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 39 [2022-07-14 06:24:59,168 INFO L356 Elim1Store]: treesize reduction 10, result has 60.0 percent of original size [2022-07-14 06:24:59,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 39 [2022-07-14 06:24:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:24:59,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:25:08,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:25:08,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560526949] [2022-07-14 06:25:08,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560526949] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:25:08,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [280311749] [2022-07-14 06:25:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:25:08,497 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:25:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:25:08,499 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:25:08,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2022-07-14 06:25:09,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:25:09,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-14 06:25:09,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:25:09,388 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 [2022-07-14 06:25:09,399 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 [2022-07-14 06:25:17,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:25:17,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:25:17,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:25:17,190 INFO L356 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-07-14 06:25:17,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-07-14 06:25:17,245 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-14 06:25:17,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 23 [2022-07-14 06:25:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:25:17,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:25:19,490 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_create_data_~nextData~0.base_32 (_ BitVec 32)) (v_ArrVal_4471 (_ BitVec 32)) (v_ArrVal_4472 (_ BitVec 32)) (|v_create_data_#t~malloc7.base_74| (_ BitVec 32)) (v_create_data_~data~0.base_99 (_ BitVec 32))) (or (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_append_~node~0#1.offset|))) (and (bvule |c_ULTIMATE.start_append_~node~0#1.offset| .cse0) (bvule .cse0 (select (store (store (store |c_#length| v_create_data_~data~0.base_99 v_ArrVal_4472) |v_create_data_#t~malloc7.base_74| v_ArrVal_4471) v_create_data_~nextData~0.base_32 (_ bv16 32)) |c_ULTIMATE.start_append_~node~0#1.base|)))) (not (= (bvneg (bvneg (select (store |c_#valid| v_create_data_~data~0.base_99 (_ bv1 1)) |v_create_data_#t~malloc7.base_74|))) (_ bv0 1))) (not (= (select |c_#valid| v_create_data_~data~0.base_99) (_ bv0 1))))) is different from false [2022-07-14 06:25:19,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [280311749] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:25:19,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:25:19,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-07-14 06:25:19,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975960272] [2022-07-14 06:25:19,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:25:19,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 06:25:19,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:25:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 06:25:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=100, Unknown=7, NotChecked=20, Total=156 [2022-07-14 06:25:19,496 INFO L87 Difference]: Start difference. First operand 370 states and 433 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 06:25:21,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:25:21,918 INFO L93 Difference]: Finished difference Result 467 states and 546 transitions. [2022-07-14 06:25:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:25:21,919 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2022-07-14 06:25:21,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:25:21,920 INFO L225 Difference]: With dead ends: 467 [2022-07-14 06:25:21,920 INFO L226 Difference]: Without dead ends: 467 [2022-07-14 06:25:21,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=34, Invalid=119, Unknown=7, NotChecked=22, Total=182 [2022-07-14 06:25:21,921 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 65 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:25:21,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 644 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 204 Unchecked, 0.3s Time] [2022-07-14 06:25:21,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-07-14 06:25:21,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 384. [2022-07-14 06:25:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 338 states have (on average 1.2485207100591715) internal successors, (422), 363 states have internal predecessors, (422), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (23), 17 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-14 06:25:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 451 transitions. [2022-07-14 06:25:21,929 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 451 transitions. Word has length 56 [2022-07-14 06:25:21,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:25:21,929 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 451 transitions. [2022-07-14 06:25:21,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 06:25:21,930 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 451 transitions. [2022-07-14 06:25:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-14 06:25:21,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:25:21,931 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:25:21,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2022-07-14 06:25:22,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-07-14 06:25:22,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:25:22,337 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:25:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:25:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 644821436, now seen corresponding path program 1 times [2022-07-14 06:25:22,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:25:22,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463572352] [2022-07-14 06:25:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:25:22,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:25:22,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:25:22,339 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:25:22,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-07-14 06:25:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:25:22,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-14 06:25:22,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:25:22,776 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 [2022-07-14 06:25:22,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:25:22,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:25:23,189 INFO L356 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2022-07-14 06:25:23,189 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 4 case distinctions, treesize of input 20 treesize of output 32 [2022-07-14 06:25:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:25:23,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:25:25,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:25:25,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463572352] [2022-07-14 06:25:25,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463572352] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:25:25,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1721279539] [2022-07-14 06:25:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:25:25,505 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:25:25,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:25:25,506 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:25:25,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2022-07-14 06:25:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:25:26,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 06:25:26,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:25:26,160 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 [2022-07-14 06:25:28,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:25:28,486 INFO L356 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2022-07-14 06:25:28,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2022-07-14 06:25:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-14 06:25:28,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:25:28,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1721279539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:25:28,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:25:28,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2022-07-14 06:25:28,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879014192] [2022-07-14 06:25:28,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:25:28,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 06:25:28,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:25:28,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 06:25:28,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2022-07-14 06:25:28,505 INFO L87 Difference]: Start difference. First operand 384 states and 451 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:25:28,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:25:28,757 INFO L93 Difference]: Finished difference Result 421 states and 497 transitions. [2022-07-14 06:25:28,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:25:28,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-07-14 06:25:28,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:25:28,760 INFO L225 Difference]: With dead ends: 421 [2022-07-14 06:25:28,760 INFO L226 Difference]: Without dead ends: 421 [2022-07-14 06:25:28,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2022-07-14 06:25:28,761 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 60 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 238 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 06:25:28,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 395 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 238 Unchecked, 0.2s Time] [2022-07-14 06:25:28,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-07-14 06:25:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 385. [2022-07-14 06:25:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 339 states have (on average 1.2507374631268438) internal successors, (424), 364 states have internal predecessors, (424), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (23), 17 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-14 06:25:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 453 transitions. [2022-07-14 06:25:28,768 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 453 transitions. Word has length 57 [2022-07-14 06:25:28,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:25:28,768 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 453 transitions. [2022-07-14 06:25:28,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:25:28,769 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 453 transitions. [2022-07-14 06:25:28,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-14 06:25:28,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:25:28,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:25:28,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-07-14 06:25:28,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (50)] Forceful destruction successful, exit code 0 [2022-07-14 06:25:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:25:29,183 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:25:29,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:25:29,183 INFO L85 PathProgramCache]: Analyzing trace with hash 644821437, now seen corresponding path program 1 times [2022-07-14 06:25:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:25:29,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015215342] [2022-07-14 06:25:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:25:29,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:25:29,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:25:29,185 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:25:29,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-07-14 06:25:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:25:29,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-14 06:25:29,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:25:29,620 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 [2022-07-14 06:25:29,627 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 [2022-07-14 06:25:29,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:25:29,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:25:30,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:25:30,052 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-14 06:25:30,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-07-14 06:25:30,064 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:25:30,064 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 11 treesize of output 11 [2022-07-14 06:25:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:25:30,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:25:39,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:25:39,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015215342] [2022-07-14 06:25:39,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015215342] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:25:39,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1145723117] [2022-07-14 06:25:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:25:39,192 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:25:39,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:25:39,193 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:25:39,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2022-07-14 06:25:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:25:39,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:25:39,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:25:39,953 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 [2022-07-14 06:25:39,958 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 [2022-07-14 06:25:40,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:25:40,356 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-14 06:25:40,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-07-14 06:25:40,370 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:25:40,370 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 11 treesize of output 11 [2022-07-14 06:25:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-14 06:25:40,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:25:40,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1145723117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:25:40,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:25:40,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-14 06:25:40,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675858802] [2022-07-14 06:25:40,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:25:40,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:25:40,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:25:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:25:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=65, Unknown=3, NotChecked=0, Total=90 [2022-07-14 06:25:40,390 INFO L87 Difference]: Start difference. First operand 385 states and 453 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:25:40,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:25:40,807 INFO L93 Difference]: Finished difference Result 451 states and 532 transitions. [2022-07-14 06:25:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 06:25:40,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-07-14 06:25:40,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:25:40,810 INFO L225 Difference]: With dead ends: 451 [2022-07-14 06:25:40,810 INFO L226 Difference]: Without dead ends: 451 [2022-07-14 06:25:40,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=22, Invalid=65, Unknown=3, NotChecked=0, Total=90 [2022-07-14 06:25:40,810 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 57 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:25:40,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 418 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 170 Unchecked, 0.4s Time] [2022-07-14 06:25:40,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-07-14 06:25:40,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 385. [2022-07-14 06:25:40,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 339 states have (on average 1.2507374631268438) internal successors, (424), 364 states have internal predecessors, (424), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (23), 17 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-14 06:25:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 453 transitions. [2022-07-14 06:25:40,818 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 453 transitions. Word has length 57 [2022-07-14 06:25:40,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:25:40,818 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 453 transitions. [2022-07-14 06:25:40,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:25:40,819 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 453 transitions. [2022-07-14 06:25:40,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 06:25:40,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:25:40,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:25:40,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-07-14 06:25:41,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (52)] Ended with exit code 0 [2022-07-14 06:25:41,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:25:41,233 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:25:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:25:41,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2040782741, now seen corresponding path program 1 times [2022-07-14 06:25:41,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:25:41,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683191698] [2022-07-14 06:25:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:25:41,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:25:41,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:25:41,237 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:25:41,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-07-14 06:25:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:25:41,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 06:25:41,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:25:41,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-14 06:25:41,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-14 06:25:41,697 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:25:41,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:25:41,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:25:41,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683191698] [2022-07-14 06:25:41,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683191698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:25:41,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:25:41,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:25:41,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464840060] [2022-07-14 06:25:41,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:25:41,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 06:25:41,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:25:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 06:25:41,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 06:25:41,699 INFO L87 Difference]: Start difference. First operand 385 states and 453 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:25:42,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:25:42,021 INFO L93 Difference]: Finished difference Result 423 states and 491 transitions. [2022-07-14 06:25:42,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 06:25:42,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-07-14 06:25:42,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:25:42,023 INFO L225 Difference]: With dead ends: 423 [2022-07-14 06:25:42,023 INFO L226 Difference]: Without dead ends: 423 [2022-07-14 06:25:42,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-14 06:25:42,024 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 149 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:25:42,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 357 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 06:25:42,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-07-14 06:25:42,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 387. [2022-07-14 06:25:42,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 341 states have (on average 1.249266862170088) internal successors, (426), 366 states have internal predecessors, (426), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (23), 17 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-14 06:25:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 455 transitions. [2022-07-14 06:25:42,031 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 455 transitions. Word has length 58 [2022-07-14 06:25:42,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:25:42,031 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 455 transitions. [2022-07-14 06:25:42,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:25:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 455 transitions. [2022-07-14 06:25:42,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 06:25:42,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:25:42,032 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:25:42,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-07-14 06:25:42,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:25:42,246 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:25:42,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:25:42,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2040783193, now seen corresponding path program 1 times [2022-07-14 06:25:42,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:25:42,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692121151] [2022-07-14 06:25:42,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:25:42,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:25:42,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:25:42,248 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:25:42,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-07-14 06:25:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:25:42,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 06:25:42,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:25:42,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:25:42,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-14 06:25:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:25:42,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:25:42,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:25:42,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692121151] [2022-07-14 06:25:42,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692121151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:25:42,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 06:25:42,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 06:25:42,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948425460] [2022-07-14 06:25:42,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:25:42,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 06:25:42,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:25:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 06:25:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 06:25:42,730 INFO L87 Difference]: Start difference. First operand 387 states and 455 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:25:43,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:25:43,277 INFO L93 Difference]: Finished difference Result 405 states and 473 transitions. [2022-07-14 06:25:43,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 06:25:43,277 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-07-14 06:25:43,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:25:43,279 INFO L225 Difference]: With dead ends: 405 [2022-07-14 06:25:43,279 INFO L226 Difference]: Without dead ends: 405 [2022-07-14 06:25:43,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-14 06:25:43,280 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 121 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 06:25:43,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 345 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 06:25:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-07-14 06:25:43,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 389. [2022-07-14 06:25:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 343 states have (on average 1.250728862973761) internal successors, (429), 368 states have internal predecessors, (429), 6 states have call successors, (6), 3 states have call predecessors, (6), 8 states have return successors, (23), 17 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-14 06:25:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 458 transitions. [2022-07-14 06:25:43,286 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 458 transitions. Word has length 58 [2022-07-14 06:25:43,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:25:43,287 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 458 transitions. [2022-07-14 06:25:43,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:25:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 458 transitions. [2022-07-14 06:25:43,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 06:25:43,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:25:43,288 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:25:43,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-07-14 06:25:43,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:25:43,501 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:25:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:25:43,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2040783194, now seen corresponding path program 1 times [2022-07-14 06:25:43,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:25:43,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979356936] [2022-07-14 06:25:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:25:43,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:25:43,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:25:43,503 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:25:43,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-07-14 06:25:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:25:44,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-14 06:25:44,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:25:44,025 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 [2022-07-14 06:25:44,033 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 [2022-07-14 06:25:44,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:25:44,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:25:44,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:25:44,426 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-14 06:25:44,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 27 [2022-07-14 06:25:44,440 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:25:44,441 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 11 treesize of output 11 [2022-07-14 06:25:44,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:25:44,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:25:44,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-07-14 06:25:44,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 06:25:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-14 06:25:44,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:25:45,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-07-14 06:25:45,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:25:45,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:25:45,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:25:45,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:01,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:26:01,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979356936] [2022-07-14 06:26:01,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979356936] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:26:01,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [805015044] [2022-07-14 06:26:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:01,688 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:26:01,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:26:01,689 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:26:01,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2022-07-14 06:26:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:26:02,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-14 06:26:02,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:26:03,030 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-14 06:26:03,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2022-07-14 06:26:03,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:03,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-07-14 06:26:03,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-14 06:26:03,447 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-14 06:26:03,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-07-14 06:26:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:26:03,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:26:03,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [805015044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:26:03,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:26:03,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 21 [2022-07-14 06:26:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119881864] [2022-07-14 06:26:03,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:26:03,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 06:26:03,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:26:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 06:26:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=537, Unknown=7, NotChecked=0, Total=600 [2022-07-14 06:26:03,571 INFO L87 Difference]: Start difference. First operand 389 states and 458 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:26:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:26:04,206 INFO L93 Difference]: Finished difference Result 394 states and 448 transitions. [2022-07-14 06:26:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-14 06:26:04,207 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-07-14 06:26:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:26:04,208 INFO L225 Difference]: With dead ends: 394 [2022-07-14 06:26:04,208 INFO L226 Difference]: Without dead ends: 394 [2022-07-14 06:26:04,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=79, Invalid=784, Unknown=7, NotChecked=0, Total=870 [2022-07-14 06:26:04,209 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 67 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:26:04,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1098 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 199 Unchecked, 0.4s Time] [2022-07-14 06:26:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-07-14 06:26:04,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 365. [2022-07-14 06:26:04,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 321 states have (on average 1.233644859813084) internal successors, (396), 347 states have internal predecessors, (396), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-14 06:26:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 416 transitions. [2022-07-14 06:26:04,215 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 416 transitions. Word has length 58 [2022-07-14 06:26:04,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:26:04,215 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 416 transitions. [2022-07-14 06:26:04,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:26:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 416 transitions. [2022-07-14 06:26:04,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 06:26:04,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:26:04,216 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:26:04,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-07-14 06:26:04,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (56)] Ended with exit code 0 [2022-07-14 06:26:04,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:26:04,617 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:26:04,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:26:04,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1411763790, now seen corresponding path program 1 times [2022-07-14 06:26:04,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:26:04,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640297042] [2022-07-14 06:26:04,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:04,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:26:04,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:26:04,619 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:26:04,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-07-14 06:26:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:26:05,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-14 06:26:05,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:26:05,255 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 [2022-07-14 06:26:05,273 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 [2022-07-14 06:26:05,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:05,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-14 06:26:05,319 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:26:05,319 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 11 treesize of output 11 [2022-07-14 06:26:05,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-14 06:26:05,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-14 06:26:05,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:26:05,730 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 06:26:05,730 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2022-07-14 06:26:05,836 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 06:26:05,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2022-07-14 06:26:05,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2022-07-14 06:26:06,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:06,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:06,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:06,675 INFO L356 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-07-14 06:26:06,676 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-07-14 06:26:06,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:06,716 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-07-14 06:26:06,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 19 [2022-07-14 06:26:06,852 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-14 06:26:06,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:26:09,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:26:09,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640297042] [2022-07-14 06:26:09,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640297042] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:26:09,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [818088148] [2022-07-14 06:26:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:09,575 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:26:09,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:26:09,576 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:26:09,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2022-07-14 06:26:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:26:10,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-14 06:26:10,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:26:10,561 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 [2022-07-14 06:26:10,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:10,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-14 06:26:10,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 06:26:16,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:16,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:16,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:16,351 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-07-14 06:26:16,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2022-07-14 06:26:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:26:16,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:26:17,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [818088148] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:26:17,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:26:17,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2022-07-14 06:26:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74328736] [2022-07-14 06:26:17,118 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:26:17,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-14 06:26:17,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:26:17,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-14 06:26:17,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=398, Unknown=3, NotChecked=0, Total=462 [2022-07-14 06:26:17,118 INFO L87 Difference]: Start difference. First operand 365 states and 416 transitions. Second operand has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:26:32,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:26:32,184 INFO L93 Difference]: Finished difference Result 385 states and 438 transitions. [2022-07-14 06:26:32,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-14 06:26:32,186 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2022-07-14 06:26:32,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:26:32,187 INFO L225 Difference]: With dead ends: 385 [2022-07-14 06:26:32,187 INFO L226 Difference]: Without dead ends: 385 [2022-07-14 06:26:32,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=112, Invalid=749, Unknown=9, NotChecked=0, Total=870 [2022-07-14 06:26:32,188 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 32 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 449 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-14 06:26:32,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1172 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 327 Invalid, 0 Unknown, 449 Unchecked, 0.7s Time] [2022-07-14 06:26:32,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-14 06:26:32,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 382. [2022-07-14 06:26:32,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 337 states have (on average 1.228486646884273) internal successors, (414), 363 states have internal predecessors, (414), 4 states have call successors, (4), 3 states have call predecessors, (4), 9 states have return successors, (17), 15 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-14 06:26:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 435 transitions. [2022-07-14 06:26:32,194 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 435 transitions. Word has length 58 [2022-07-14 06:26:32,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:26:32,195 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 435 transitions. [2022-07-14 06:26:32,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 06:26:32,195 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 435 transitions. [2022-07-14 06:26:32,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-14 06:26:32,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:26:32,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:26:32,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (58)] Forceful destruction successful, exit code 0 [2022-07-14 06:26:32,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-07-14 06:26:32,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:26:32,600 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:26:32,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:26:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1411763789, now seen corresponding path program 1 times [2022-07-14 06:26:32,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:26:32,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603649850] [2022-07-14 06:26:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:32,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:26:32,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:26:32,602 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:26:32,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-07-14 06:26:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:26:33,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-14 06:26:33,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:26:33,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-14 06:26:33,381 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:26:33,579 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 06:26:33,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2022-07-14 06:26:33,692 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-14 06:26:33,692 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 51 [2022-07-14 06:26:33,764 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2022-07-14 06:26:34,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:34,408 INFO L356 Elim1Store]: treesize reduction 73, result has 31.1 percent of original size [2022-07-14 06:26:34,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 33 treesize of output 52 [2022-07-14 06:26:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-14 06:26:34,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:26:35,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:26:35,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603649850] [2022-07-14 06:26:35,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603649850] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:26:35,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1723752652] [2022-07-14 06:26:35,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:35,197 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:26:35,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:26:35,198 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:26:35,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2022-07-14 06:26:36,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:26:36,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:26:36,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:26:36,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-14 06:26:37,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:37,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:37,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:37,173 INFO L356 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2022-07-14 06:26:37,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 41 [2022-07-14 06:26:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:26:37,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:26:37,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1723752652] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:26:37,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:26:37,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2022-07-14 06:26:37,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375012427] [2022-07-14 06:26:37,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:26:37,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-14 06:26:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:26:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-14 06:26:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-14 06:26:37,542 INFO L87 Difference]: Start difference. First operand 382 states and 435 transitions. Second operand has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 06:26:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:26:40,597 INFO L93 Difference]: Finished difference Result 388 states and 440 transitions. [2022-07-14 06:26:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-14 06:26:40,598 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2022-07-14 06:26:40,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:26:40,599 INFO L225 Difference]: With dead ends: 388 [2022-07-14 06:26:40,599 INFO L226 Difference]: Without dead ends: 388 [2022-07-14 06:26:40,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2022-07-14 06:26:40,600 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 41 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 06:26:40,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 872 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 301 Unchecked, 0.3s Time] [2022-07-14 06:26:40,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-07-14 06:26:40,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 376. [2022-07-14 06:26:40,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 332 states have (on average 1.2289156626506024) internal successors, (408), 358 states have internal predecessors, (408), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (16), 14 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-14 06:26:40,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 428 transitions. [2022-07-14 06:26:40,605 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 428 transitions. Word has length 58 [2022-07-14 06:26:40,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:26:40,605 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 428 transitions. [2022-07-14 06:26:40,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 15 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 06:26:40,606 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 428 transitions. [2022-07-14 06:26:40,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-14 06:26:40,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:26:40,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:26:40,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-07-14 06:26:40,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (60)] Ended with exit code 0 [2022-07-14 06:26:41,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:26:41,021 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:26:41,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:26:41,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1198113516, now seen corresponding path program 1 times [2022-07-14 06:26:41,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:26:41,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920629660] [2022-07-14 06:26:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:41,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:26:41,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:26:41,023 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:26:41,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-07-14 06:26:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:26:41,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 06:26:41,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:26:41,486 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 [2022-07-14 06:26:41,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:26:41,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:26:41,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:41,971 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-07-14 06:26:41,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 29 [2022-07-14 06:26:42,005 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-14 06:26:42,006 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 11 treesize of output 11 [2022-07-14 06:26:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:26:42,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:26:44,365 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6411 (_ BitVec 32)) (v_create_data_~data~0.base_135 (_ BitVec 32)) (v_ArrVal_6410 (_ BitVec 32))) (or (not (= (select |c_#valid| v_create_data_~data~0.base_135) (_ bv0 1))) (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_append_~pointerToList#1.offset|))) (and (bvule .cse0 (select (store (store |c_#length| v_create_data_~data~0.base_135 v_ArrVal_6411) v_ArrVal_6410 (_ bv80 32)) |c_ULTIMATE.start_append_~pointerToList#1.base|)) (bvule |c_ULTIMATE.start_append_~pointerToList#1.offset| .cse0))))) is different from false [2022-07-14 06:26:44,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:26:44,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920629660] [2022-07-14 06:26:44,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920629660] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:26:44,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1232811934] [2022-07-14 06:26:44,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:44,370 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:26:44,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:26:44,371 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:26:44,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (62)] Waiting until timeout for monitored process [2022-07-14 06:26:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:26:45,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 06:26:45,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:26:45,173 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 [2022-07-14 06:26:45,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:45,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-14 06:26:45,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-14 06:26:46,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:46,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:46,253 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-14 06:26:46,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-07-14 06:26:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-14 06:26:46,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:26:46,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1232811934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:26:46,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:26:46,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-07-14 06:26:46,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560310409] [2022-07-14 06:26:46,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:26:46,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:26:46,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:26:46,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:26:46,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=229, Unknown=1, NotChecked=30, Total=306 [2022-07-14 06:26:46,352 INFO L87 Difference]: Start difference. First operand 376 states and 428 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:26:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:26:46,945 INFO L93 Difference]: Finished difference Result 406 states and 462 transitions. [2022-07-14 06:26:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:26:46,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-07-14 06:26:46,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:26:46,947 INFO L225 Difference]: With dead ends: 406 [2022-07-14 06:26:46,947 INFO L226 Difference]: Without dead ends: 406 [2022-07-14 06:26:46,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=59, Invalid=286, Unknown=1, NotChecked=34, Total=380 [2022-07-14 06:26:46,948 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 13 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 06:26:46,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 518 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 112 Unchecked, 0.5s Time] [2022-07-14 06:26:46,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-07-14 06:26:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 390. [2022-07-14 06:26:46,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 346 states have (on average 1.2283236994219653) internal successors, (425), 372 states have internal predecessors, (425), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (14), 14 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-14 06:26:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 443 transitions. [2022-07-14 06:26:46,953 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 443 transitions. Word has length 59 [2022-07-14 06:26:46,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:26:46,954 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 443 transitions. [2022-07-14 06:26:46,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:26:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 443 transitions. [2022-07-14 06:26:46,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-14 06:26:46,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:26:46,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:26:46,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-07-14 06:26:47,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (62)] Forceful destruction successful, exit code 0 [2022-07-14 06:26:47,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-14 06:26:47,368 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:26:47,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:26:47,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1198113515, now seen corresponding path program 1 times [2022-07-14 06:26:47,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:26:47,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647647511] [2022-07-14 06:26:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:47,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:26:47,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:26:47,370 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:26:47,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-07-14 06:26:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:26:47,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:26:47,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:26:47,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-14 06:26:47,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-14 06:26:48,126 INFO L356 Elim1Store]: treesize reduction 42, result has 33.3 percent of original size [2022-07-14 06:26:48,126 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 4 case distinctions, treesize of input 20 treesize of output 32 [2022-07-14 06:26:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:26:48,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:26:52,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:26:52,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647647511] [2022-07-14 06:26:52,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647647511] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:26:52,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [367751611] [2022-07-14 06:26:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:52,285 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:26:52,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:26:52,286 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:26:52,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (64)] Waiting until timeout for monitored process [2022-07-14 06:26:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:26:53,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-14 06:26:53,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:26:53,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-14 06:26:53,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:53,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-14 06:26:53,740 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-14 06:26:53,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 26 [2022-07-14 06:26:53,864 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-14 06:26:53,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 06:26:53,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [367751611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 06:26:53,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-14 06:26:53,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-07-14 06:26:53,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510154959] [2022-07-14 06:26:53,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 06:26:53,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 06:26:53,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:26:53,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 06:26:53,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2022-07-14 06:26:53,866 INFO L87 Difference]: Start difference. First operand 390 states and 443 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:26:54,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 06:26:54,291 INFO L93 Difference]: Finished difference Result 396 states and 448 transitions. [2022-07-14 06:26:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 06:26:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-07-14 06:26:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 06:26:54,293 INFO L225 Difference]: With dead ends: 396 [2022-07-14 06:26:54,293 INFO L226 Difference]: Without dead ends: 396 [2022-07-14 06:26:54,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=50, Invalid=220, Unknown=2, NotChecked=0, Total=272 [2022-07-14 06:26:54,299 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 10 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 06:26:54,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 604 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 140 Unchecked, 0.4s Time] [2022-07-14 06:26:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-07-14 06:26:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 377. [2022-07-14 06:26:54,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 334 states have (on average 1.2275449101796407) internal successors, (410), 360 states have internal predecessors, (410), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (13), 13 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-14 06:26:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 427 transitions. [2022-07-14 06:26:54,304 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 427 transitions. Word has length 59 [2022-07-14 06:26:54,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 06:26:54,304 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 427 transitions. [2022-07-14 06:26:54,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 06:26:54,304 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 427 transitions. [2022-07-14 06:26:54,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-14 06:26:54,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 06:26:54,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 06:26:54,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (64)] Forceful destruction successful, exit code 0 [2022-07-14 06:26:54,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2022-07-14 06:26:54,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 06:26:54,715 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-07-14 06:26:54,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 06:26:54,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1950696328, now seen corresponding path program 1 times [2022-07-14 06:26:54,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 06:26:54,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531074309] [2022-07-14 06:26:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:54,716 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 06:26:54,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 06:26:54,717 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 06:26:54,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-07-14 06:26:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:26:55,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 06:26:55,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:26:55,382 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 [2022-07-14 06:26:55,862 INFO L356 Elim1Store]: treesize reduction 96, result has 27.8 percent of original size [2022-07-14 06:26:55,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 33 treesize of output 56 [2022-07-14 06:26:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:26:55,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:26:59,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 06:26:59,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531074309] [2022-07-14 06:26:59,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531074309] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:26:59,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [391346592] [2022-07-14 06:26:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 06:26:59,113 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-14 06:26:59,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-14 06:26:59,114 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-14 06:26:59,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2022-07-14 06:27:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 06:27:00,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 06:27:00,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 06:27:00,053 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 [2022-07-14 06:27:16,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-14 06:27:16,970 INFO L356 Elim1Store]: treesize reduction 70, result has 34.6 percent of original size [2022-07-14 06:27:16,970 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 5 case distinctions, treesize of input 28 treesize of output 53 [2022-07-14 06:27:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-14 06:27:17,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 06:27:23,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [391346592] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 06:27:23,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 06:27:23,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2022-07-14 06:27:23,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600124242] [2022-07-14 06:27:23,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 06:27:23,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 06:27:23,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 06:27:23,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 06:27:23,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=110, Unknown=11, NotChecked=0, Total=156 [2022-07-14 06:27:23,343 INFO L87 Difference]: Start difference. First operand 377 states and 427 transitions. Second operand has 11 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2)