./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf 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/list-ext3-properties/sll_shallow_copy-2.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 cf7af2f20e563d03f4a81a8dac054ded849cb34c ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis 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/list-ext3-properties/sll_shallow_copy-2.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 cf7af2f20e563d03f4a81a8dac054ded849cb34c .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 19:05:36,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:05:36,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:05:36,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:05:36,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:05:36,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:05:36,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:05:36,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:05:36,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:05:36,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:05:36,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:05:36,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:05:36,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:05:36,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:05:36,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:05:36,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:05:36,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:05:36,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:05:36,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:05:36,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:05:36,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:05:36,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:05:36,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:05:36,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:05:36,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:05:36,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:05:36,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:05:36,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:05:36,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:05:36,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:05:36,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:05:36,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:05:36,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:05:36,690 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:05:36,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:05:36,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:05:36,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:05:36,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:05:36,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:05:36,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:05:36,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:05:36,696 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 19:05:36,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:05:36,729 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:05:36,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:05:36,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:05:36,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:05:36,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:05:36,733 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:05:36,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:05:36,734 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 19:05:36,734 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:05:36,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:05:36,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 19:05:36,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:05:36,735 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:05:36,735 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:05:36,736 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:05:36,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:05:36,736 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:05:36,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 19:05:36,736 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:05:36,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:05:36,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:05:36,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:05:36,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:05:36,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:05:36,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:05:36,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 19:05:36,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 19:05:36,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:05:36,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2021-08-30 19:05:37,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:05:37,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:05:37,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:05:37,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:05:37,106 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:05:37,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-08-30 19:05:37,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a61fce03/59ef882bbec24ca3a753d827ba0a3dd3/FLAGea2ed144c [2021-08-30 19:05:37,635 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:05:37,639 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-08-30 19:05:37,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a61fce03/59ef882bbec24ca3a753d827ba0a3dd3/FLAGea2ed144c [2021-08-30 19:05:38,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a61fce03/59ef882bbec24ca3a753d827ba0a3dd3 [2021-08-30 19:05:38,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:05:38,009 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:05:38,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:05:38,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:05:38,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:05:38,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:05:38" (1/1) ... [2021-08-30 19:05:38,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392998a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:38, skipping insertion in model container [2021-08-30 19:05:38,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:05:38" (1/1) ... [2021-08-30 19:05:38,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:05:38,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:05:38,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:05:38,350 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-30 19:05:38,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@e01fdf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:38, skipping insertion in model container [2021-08-30 19:05:38,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:05:38,351 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-30 19:05:38,353 INFO L158 Benchmark]: Toolchain (without parser) took 343.73ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.1MB in the beginning and 50.5MB in the end (delta: -19.4MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-08-30 19:05:38,354 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 36.3MB in the end (delta: 37.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:05:38,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.89ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.9MB in the beginning and 50.7MB in the end (delta: -19.8MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-08-30 19:05:38,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory was 36.3MB in the beginning and 36.3MB in the end (delta: 37.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.89ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 30.9MB in the beginning and 50.7MB in the end (delta: -19.8MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 19:05:40,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 19:05:40,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 19:05:40,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 19:05:40,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 19:05:40,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 19:05:40,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 19:05:40,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 19:05:40,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 19:05:40,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 19:05:40,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 19:05:40,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 19:05:40,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 19:05:40,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 19:05:40,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 19:05:40,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 19:05:40,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 19:05:40,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 19:05:40,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 19:05:40,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 19:05:40,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 19:05:40,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 19:05:40,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 19:05:40,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 19:05:40,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 19:05:40,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 19:05:40,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 19:05:40,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 19:05:40,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 19:05:40,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 19:05:40,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 19:05:40,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 19:05:40,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 19:05:40,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 19:05:40,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 19:05:40,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 19:05:40,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 19:05:40,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 19:05:40,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 19:05:40,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 19:05:40,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 19:05:40,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 19:05:40,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 19:05:40,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 19:05:40,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 19:05:40,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 19:05:40,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 19:05:40,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 19:05:40,164 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 19:05:40,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 19:05:40,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 19:05:40,165 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 19:05:40,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 19:05:40,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 19:05:40,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 19:05:40,166 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 19:05:40,166 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 19:05:40,166 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 19:05:40,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 19:05:40,167 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 19:05:40,167 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 19:05:40,167 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 19:05:40,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 19:05:40,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 19:05:40,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 19:05:40,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 19:05:40,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 19:05:40,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:05:40,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 19:05:40,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 19:05:40,169 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 19:05:40,169 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 19:05:40,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 19:05:40,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 19:05:40,170 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2021-08-30 19:05:40,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 19:05:40,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 19:05:40,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 19:05:40,564 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 19:05:40,565 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 19:05:40,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-08-30 19:05:40,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21e2d6c97/f1055e60d89542a6bde281f2651235f1/FLAGd4342445f [2021-08-30 19:05:41,150 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 19:05:41,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2021-08-30 19:05:41,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21e2d6c97/f1055e60d89542a6bde281f2651235f1/FLAGd4342445f [2021-08-30 19:05:41,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21e2d6c97/f1055e60d89542a6bde281f2651235f1 [2021-08-30 19:05:41,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 19:05:41,609 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 19:05:41,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 19:05:41,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 19:05:41,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 19:05:41,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:05:41" (1/1) ... [2021-08-30 19:05:41,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@293904e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41, skipping insertion in model container [2021-08-30 19:05:41,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:05:41" (1/1) ... [2021-08-30 19:05:41,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 19:05:41,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:05:41,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:05:41,839 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-30 19:05:41,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 19:05:41,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:05:41,898 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 19:05:41,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 19:05:41,972 INFO L208 MainTranslator]: Completed translation [2021-08-30 19:05:41,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41 WrapperNode [2021-08-30 19:05:41,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 19:05:41,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 19:05:41,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 19:05:41,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 19:05:41,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41" (1/1) ... [2021-08-30 19:05:41,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41" (1/1) ... [2021-08-30 19:05:42,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41" (1/1) ... [2021-08-30 19:05:42,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41" (1/1) ... [2021-08-30 19:05:42,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41" (1/1) ... [2021-08-30 19:05:42,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41" (1/1) ... [2021-08-30 19:05:42,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41" (1/1) ... [2021-08-30 19:05:42,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 19:05:42,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 19:05:42,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 19:05:42,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 19:05:42,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41" (1/1) ... [2021-08-30 19:05:42,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 19:05:42,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 19:05:42,062 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) [2021-08-30 19:05:42,077 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 [2021-08-30 19:05:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 19:05:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 19:05:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 19:05:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 19:05:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 19:05:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-30 19:05:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2021-08-30 19:05:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 19:05:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 19:05:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 19:05:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 19:05:42,103 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 19:05:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 19:05:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 19:05:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 19:05:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 19:05:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 19:05:42,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 19:05:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 19:05:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 19:05:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 19:05:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 19:05:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 19:05:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 19:05:42,105 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 19:05:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 19:05:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 19:05:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 19:05:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 19:05:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 19:05:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 19:05:42,106 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 19:05:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 19:05:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 19:05:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 19:05:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 19:05:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 19:05:42,107 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 19:05:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 19:05:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 19:05:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 19:05:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 19:05:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 19:05:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 19:05:42,108 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 19:05:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 19:05:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 19:05:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 19:05:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 19:05:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 19:05:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 19:05:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 19:05:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 19:05:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 19:05:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 19:05:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 19:05:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 19:05:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 19:05:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 19:05:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 19:05:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 19:05:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 19:05:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 19:05:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 19:05:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-30 19:05:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 19:05:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 19:05:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 19:05:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 19:05:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 19:05:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 19:05:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 19:05:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 19:05:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 19:05:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 19:05:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 19:05:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 19:05:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 19:05:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 19:05:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 19:05:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 19:05:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 19:05:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 19:05:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 19:05:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 19:05:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 19:05:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 19:05:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 19:05:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 19:05:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 19:05:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 19:05:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 19:05:42,126 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 19:05:42,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 19:05:42,126 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 19:05:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 19:05:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 19:05:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 19:05:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 19:05:42,127 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 19:05:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 19:05:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 19:05:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 19:05:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 19:05:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 19:05:42,128 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 19:05:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 19:05:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 19:05:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 19:05:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 19:05:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 19:05:42,129 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 19:05:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 19:05:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-30 19:05:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2021-08-30 19:05:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 19:05:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 19:05:42,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 19:05:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 19:05:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 19:05:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 19:05:42,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 19:05:42,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 19:05:42,414 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-30 19:05:42,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 19:05:42,503 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-30 19:05:42,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:05:42 BoogieIcfgContainer [2021-08-30 19:05:42,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 19:05:42,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 19:05:42,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 19:05:42,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 19:05:42,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:05:41" (1/3) ... [2021-08-30 19:05:42,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5caacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:05:42, skipping insertion in model container [2021-08-30 19:05:42,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:05:41" (2/3) ... [2021-08-30 19:05:42,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5caacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:05:42, skipping insertion in model container [2021-08-30 19:05:42,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:05:42" (3/3) ... [2021-08-30 19:05:42,520 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2021-08-30 19:05:42,526 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 19:05:42,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-08-30 19:05:42,571 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 19:05:42,578 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 19:05:42,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-08-30 19:05:42,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 20 states have (on average 1.65) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-08-30 19:05:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 19:05:42,612 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:05:42,613 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:05:42,613 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-08-30 19:05:42,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:05:42,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1580649199, now seen corresponding path program 1 times [2021-08-30 19:05:42,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:05:42,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525678674] [2021-08-30 19:05:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:05:42,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:05:42,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:05:42,637 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) [2021-08-30 19:05:42,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 19:05:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:05:42,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 19:05:42,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:05:42,869 INFO L388 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 [2021-08-30 19:05:43,060 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 19:05:43,061 INFO L388 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 21 treesize of output 26 [2021-08-30 19:05:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:05:43,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:05:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:05:43,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 19:05:43,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525678674] [2021-08-30 19:05:43,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525678674] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:05:43,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 19:05:43,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-08-30 19:05:43,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342490214] [2021-08-30 19:05:43,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 19:05:43,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 19:05:43,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 19:05:43,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-08-30 19:05:43,474 INFO L87 Difference]: Start difference. First operand has 41 states, 20 states have (on average 1.65) internal successors, (33), 32 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:05:43,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:05:43,681 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-08-30 19:05:43,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:05:43,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 19 [2021-08-30 19:05:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:05:43,688 INFO L225 Difference]: With dead ends: 42 [2021-08-30 19:05:43,688 INFO L226 Difference]: Without dead ends: 36 [2021-08-30 19:05:43,691 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 180.82ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:05:43,698 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.85ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 143.87ms IncrementalHoareTripleChecker+Time [2021-08-30 19:05:43,699 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 35 Invalid, 176 Unknown, 0 Unchecked, 2.85ms Time], IncrementalHoareTripleChecker [3 Valid, 133 Invalid, 0 Unknown, 40 Unchecked, 143.87ms Time] [2021-08-30 19:05:43,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-30 19:05:43,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-30 19:05:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 28 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:05:43,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 35 transitions. [2021-08-30 19:05:43,733 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 35 transitions. Word has length 19 [2021-08-30 19:05:43,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:05:43,733 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 35 transitions. [2021-08-30 19:05:43,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 19:05:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2021-08-30 19:05:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-30 19:05:43,735 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:05:43,735 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:05:43,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 19:05:43,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:05:43,946 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-08-30 19:05:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:05:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1580649198, now seen corresponding path program 1 times [2021-08-30 19:05:43,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:05:43,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575572951] [2021-08-30 19:05:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:05:43,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:05:43,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:05:43,949 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) [2021-08-30 19:05:43,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 19:05:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:05:44,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-30 19:05:44,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:05:44,070 INFO L388 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 [2021-08-30 19:05:44,076 INFO L388 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 [2021-08-30 19:05:44,291 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 19:05:44,291 INFO L388 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 36 treesize of output 38 [2021-08-30 19:05:44,300 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 19:05:44,300 INFO L388 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 35 treesize of output 35 [2021-08-30 19:05:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:05:44,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:06:06,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:06:06,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 19:06:06,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575572951] [2021-08-30 19:06:06,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575572951] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:06:06,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 19:06:06,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-08-30 19:06:06,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111992444] [2021-08-30 19:06:06,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-30 19:06:06,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 19:06:06,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-30 19:06:06,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=196, Unknown=6, NotChecked=0, Total=240 [2021-08-30 19:06:06,072 INFO L87 Difference]: Start difference. First operand 36 states and 35 transitions. Second operand has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 19:06:06,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:06:06,435 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2021-08-30 19:06:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 19:06:06,437 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 19 [2021-08-30 19:06:06,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:06:06,438 INFO L225 Difference]: With dead ends: 34 [2021-08-30 19:06:06,438 INFO L226 Difference]: Without dead ends: 34 [2021-08-30 19:06:06,438 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 19360.20ms TimeCoverageRelationStatistics Valid=60, Invalid=276, Unknown=6, NotChecked=0, Total=342 [2021-08-30 19:06:06,439 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.43ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 161.74ms IncrementalHoareTripleChecker+Time [2021-08-30 19:06:06,440 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 36 Invalid, 240 Unknown, 0 Unchecked, 2.43ms Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 159 Unchecked, 161.74ms Time] [2021-08-30 19:06:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-08-30 19:06:06,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-08-30 19:06:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 26 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:06:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2021-08-30 19:06:06,443 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 19 [2021-08-30 19:06:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:06:06,444 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2021-08-30 19:06:06,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 19:06:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2021-08-30 19:06:06,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-30 19:06:06,445 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:06:06,445 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:06:06,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-30 19:06:06,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:06:06,655 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-08-30 19:06:06,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:06:06,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1414543091, now seen corresponding path program 1 times [2021-08-30 19:06:06,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:06:06,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38112659] [2021-08-30 19:06:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:06:06,657 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:06:06,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:06:06,661 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) [2021-08-30 19:06:06,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 19:06:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:06:06,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 19:06:06,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:06:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 19:06:06,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:06:06,951 INFO L388 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 8 treesize of output 6 [2021-08-30 19:06:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 19:06:07,167 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 19:06:07,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38112659] [2021-08-30 19:06:07,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38112659] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:06:07,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 19:06:07,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-08-30 19:06:07,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629261225] [2021-08-30 19:06:07,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:06:07,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 19:06:07,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:06:07,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:06:07,169 INFO L87 Difference]: Start difference. First operand 34 states and 33 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 19:06:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:06:07,448 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2021-08-30 19:06:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 19:06:07,448 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 21 [2021-08-30 19:06:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:06:07,449 INFO L225 Difference]: With dead ends: 32 [2021-08-30 19:06:07,449 INFO L226 Difference]: Without dead ends: 32 [2021-08-30 19:06:07,450 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 215.73ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-08-30 19:06:07,451 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 256.41ms IncrementalHoareTripleChecker+Time [2021-08-30 19:06:07,451 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 53 Invalid, 137 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 256.41ms Time] [2021-08-30 19:06:07,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-08-30 19:06:07,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-08-30 19:06:07,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:06:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2021-08-30 19:06:07,455 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 21 [2021-08-30 19:06:07,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:06:07,455 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2021-08-30 19:06:07,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-30 19:06:07,456 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2021-08-30 19:06:07,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 19:06:07,456 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:06:07,457 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:06:07,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 19:06:07,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:06:07,664 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-08-30 19:06:07,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:06:07,665 INFO L82 PathProgramCache]: Analyzing trace with hash 901162851, now seen corresponding path program 1 times [2021-08-30 19:06:07,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:06:07,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181119754] [2021-08-30 19:06:07,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:06:07,666 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:06:07,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:06:07,667 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) [2021-08-30 19:06:07,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 19:06:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:06:07,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 19:06:07,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:06:07,780 INFO L388 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 [2021-08-30 19:06:07,835 INFO L388 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 21 treesize of output 17 [2021-08-30 19:06:07,858 INFO L388 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 13 [2021-08-30 19:06:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 19:06:07,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:06:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 19:06:07,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 19:06:07,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181119754] [2021-08-30 19:06:07,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181119754] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 19:06:07,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:06:07,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-08-30 19:06:07,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719274320] [2021-08-30 19:06:07,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 19:06:07,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 19:06:07,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 19:06:07,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 19:06:07,984 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:06:08,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:06:08,192 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2021-08-30 19:06:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:06:08,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-08-30 19:06:08,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:06:08,194 INFO L225 Difference]: With dead ends: 31 [2021-08-30 19:06:08,194 INFO L226 Difference]: Without dead ends: 31 [2021-08-30 19:06:08,194 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 101.90ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-30 19:06:08,195 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.56ms IncrementalHoareTripleChecker+Time [2021-08-30 19:06:08,195 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 108 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 160.56ms Time] [2021-08-30 19:06:08,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-30 19:06:08,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-08-30 19:06:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 23 states have internal predecessors, (23), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:06:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2021-08-30 19:06:08,199 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 22 [2021-08-30 19:06:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:06:08,199 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2021-08-30 19:06:08,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 19:06:08,200 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2021-08-30 19:06:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 19:06:08,200 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:06:08,201 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:06:08,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 19:06:08,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:06:08,401 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-08-30 19:06:08,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:06:08,402 INFO L82 PathProgramCache]: Analyzing trace with hash 901162852, now seen corresponding path program 1 times [2021-08-30 19:06:08,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:06:08,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719155992] [2021-08-30 19:06:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:06:08,402 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:06:08,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:06:08,403 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) [2021-08-30 19:06:08,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 19:06:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:06:08,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 19:06:08,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:06:08,511 INFO L388 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 [2021-08-30 19:06:08,593 INFO L388 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 [2021-08-30 19:06:08,600 INFO L388 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 17 treesize of output 13 [2021-08-30 19:06:08,641 INFO L388 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 23 [2021-08-30 19:06:08,645 INFO L388 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 20 treesize of output 12 [2021-08-30 19:06:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 19:06:08,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:06:09,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 19:06:09,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 19:06:09,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719155992] [2021-08-30 19:06:09,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719155992] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 19:06:09,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 19:06:09,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-08-30 19:06:09,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037467661] [2021-08-30 19:06:09,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:06:09,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 19:06:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:06:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:06:09,126 INFO L87 Difference]: Start difference. First operand 31 states and 30 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 19:06:09,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:06:09,682 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2021-08-30 19:06:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 19:06:09,683 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 22 [2021-08-30 19:06:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:06:09,684 INFO L225 Difference]: With dead ends: 30 [2021-08-30 19:06:09,684 INFO L226 Difference]: Without dead ends: 30 [2021-08-30 19:06:09,684 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 429.44ms TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-08-30 19:06:09,685 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 399.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 440.21ms IncrementalHoareTripleChecker+Time [2021-08-30 19:06:09,685 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 42 Invalid, 137 Unknown, 0 Unchecked, 2.52ms Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 440.21ms Time] [2021-08-30 19:06:09,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-30 19:06:09,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-30 19:06:09,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:06:09,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 29 transitions. [2021-08-30 19:06:09,689 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 29 transitions. Word has length 22 [2021-08-30 19:06:09,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:06:09,689 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 29 transitions. [2021-08-30 19:06:09,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 19:06:09,690 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 29 transitions. [2021-08-30 19:06:09,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 19:06:09,690 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:06:09,690 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:06:09,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-30 19:06:09,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:06:09,899 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr9ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-08-30 19:06:09,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:06:09,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1584820282, now seen corresponding path program 1 times [2021-08-30 19:06:09,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:06:09,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99613076] [2021-08-30 19:06:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:06:09,900 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:06:09,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:06:09,901 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) [2021-08-30 19:06:09,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 19:06:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 19:06:09,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 19:06:09,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 19:06:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 19:06:10,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 19:06:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 19:06:10,588 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 19:06:10,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99613076] [2021-08-30 19:06:10,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99613076] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 19:06:10,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-30 19:06:10,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 11 [2021-08-30 19:06:10,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960199179] [2021-08-30 19:06:10,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 19:06:10,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 19:06:10,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 19:06:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-30 19:06:10,590 INFO L87 Difference]: Start difference. First operand 30 states and 29 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 19:06:10,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 19:06:10,886 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2021-08-30 19:06:10,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 19:06:10,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2021-08-30 19:06:10,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 19:06:10,888 INFO L225 Difference]: With dead ends: 29 [2021-08-30 19:06:10,888 INFO L226 Difference]: Without dead ends: 29 [2021-08-30 19:06:10,888 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 241.49ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-08-30 19:06:10,889 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 16 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 224.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.12ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 256.25ms IncrementalHoareTripleChecker+Time [2021-08-30 19:06:10,889 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 14 Invalid, 147 Unknown, 0 Unchecked, 2.12ms Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 14 Unchecked, 256.25ms Time] [2021-08-30 19:06:10,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-30 19:06:10,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-30 19:06:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 19:06:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2021-08-30 19:06:10,893 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 26 [2021-08-30 19:06:10,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 19:06:10,893 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2021-08-30 19:06:10,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 19:06:10,894 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2021-08-30 19:06:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 19:06:10,894 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 19:06:10,895 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 19:06:10,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 19:06:11,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:06:11,097 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr11ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 7 more)] === [2021-08-30 19:06:11,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 19:06:11,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1701102057, now seen corresponding path program 1 times [2021-08-30 19:06:11,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 19:06:11,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110380233] [2021-08-30 19:06:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 19:06:11,098 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 19:06:11,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 19:06:11,099 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) [2021-08-30 19:06:11,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 19:06:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 19:06:11,187 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 19:06:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 19:06:11,259 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-30 19:06:11,259 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 19:06:11,260 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr11ENSURES_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2021-08-30 19:06:11,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (10 of 12 remaining) [2021-08-30 19:06:11,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (9 of 12 remaining) [2021-08-30 19:06:11,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (8 of 12 remaining) [2021-08-30 19:06:11,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (7 of 12 remaining) [2021-08-30 19:06:11,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (6 of 12 remaining) [2021-08-30 19:06:11,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (5 of 12 remaining) [2021-08-30 19:06:11,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (4 of 12 remaining) [2021-08-30 19:06:11,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (3 of 12 remaining) [2021-08-30 19:06:11,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 12 remaining) [2021-08-30 19:06:11,263 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 12 remaining) [2021-08-30 19:06:11,264 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10ASSERT_VIOLATIONMEMORY_FREE (0 of 12 remaining) [2021-08-30 19:06:11,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 19:06:11,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 19:06:11,470 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 19:06:11,476 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 19:06:11,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:06:11 BoogieIcfgContainer [2021-08-30 19:06:11,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 19:06:11,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 19:06:11,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 19:06:11,496 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 19:06:11,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:05:42" (3/4) ... [2021-08-30 19:06:11,500 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 19:06:11,500 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 19:06:11,500 INFO L158 Benchmark]: Toolchain (without parser) took 29892.04ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 36.4MB in the beginning and 30.7MB in the end (delta: 5.8MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2021-08-30 19:06:11,501 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:06:11,501 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.49ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 35.5MB in the end (delta: 833.0kB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-08-30 19:06:11,501 INFO L158 Benchmark]: Boogie Preprocessor took 53.69ms. Allocated memory is still 58.7MB. Free memory was 35.3MB in the beginning and 33.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 19:06:11,501 INFO L158 Benchmark]: RCFGBuilder took 476.71ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 32.9MB in the beginning and 42.7MB in the end (delta: -9.8MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2021-08-30 19:06:11,502 INFO L158 Benchmark]: TraceAbstraction took 28988.21ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 42.1MB in the beginning and 31.4MB in the end (delta: 10.7MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2021-08-30 19:06:11,504 INFO L158 Benchmark]: Witness Printer took 3.95ms. Allocated memory is still 86.0MB. Free memory was 31.4MB in the beginning and 30.7MB in the end (delta: 746.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 19:06:11,507 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.49ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 35.5MB in the end (delta: 833.0kB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.69ms. Allocated memory is still 58.7MB. Free memory was 35.3MB in the beginning and 33.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 476.71ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 32.9MB in the beginning and 42.7MB in the end (delta: -9.8MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * TraceAbstraction took 28988.21ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 42.1MB in the beginning and 31.4MB in the end (delta: 10.7MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * Witness Printer took 3.95ms. Allocated memory is still 86.0MB. Free memory was 31.4MB in the beginning and 30.7MB in the end (delta: 746.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={1:0}] [L566] return temp; VAL [\result={1:0}, temp={1:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={1:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={2:0}] [L566] return temp; VAL [\result={2:0}, temp={2:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L570] s->next = alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L571] EXPR s->next VAL [s={1:0}, s->next={2:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={0:0}, s={1:0}, s->next={2:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={1:0}] - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 570]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 571]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 54 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 28899.23ms, OverallIterations: 7, TraceHistogramMax: 2, EmptinessCheckTime: 27.15ms, AutomataDifference: 1977.72ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.47ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 1419.04ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 212 SdHoareTripleChecker+Invalid, 1256.60ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 213 IncrementalHoareTripleChecker+Unchecked, 421 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 722 IncrementalHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 42 mSDtfsCounter, 722 mSolverCounterSat, 13.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 187 SyntacticMatches, 9 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 20529.59ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 36.63ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 47.52ms SsaConstructionTime, 129.95ms SatisfiabilityAnalysisTime, 24586.86ms InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 246 ConstructedInterpolants, 30 QuantifiedInterpolants, 1782 SizeOfPredicates, 24 NumberOfNonLiveVariables, 444 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 28/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 19:06:11,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...