./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3a877d22 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/uthash-2.0.2/uthash_JEN_test2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:45:54,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:45:54,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:45:54,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:45:54,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:45:54,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:45:54,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:45:54,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:45:54,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:45:54,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:45:54,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:45:54,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:45:54,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:45:54,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:45:54,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:45:54,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:45:54,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:45:54,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:45:54,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:45:54,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:45:54,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:45:54,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:45:54,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:45:54,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:45:54,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:45:54,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:45:54,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:45:54,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:45:54,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:45:54,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:45:54,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:45:54,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:45:54,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:45:54,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:45:54,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:45:54,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:45:54,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:45:54,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:45:54,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:45:54,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:45:54,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:45:54,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 16:45:54,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:45:54,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:45:54,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:45:54,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:45:54,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:45:54,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:45:54,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:45:54,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:45:54,892 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:45:54,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:45:54,893 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:45:54,893 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:45:54,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:45:54,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:45:54,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:45:54,894 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:45:54,894 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:45:54,894 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:45:54,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:45:54,895 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:45:54,895 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:45:54,895 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:45:54,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:45:54,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:45:54,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:45:54,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:54,896 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:45:54,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:45:54,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:45:54,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:45:54,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:45:54,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2021-12-15 16:45:55,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:45:55,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:45:55,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:45:55,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:45:55,127 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:45:55,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-12-15 16:45:55,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/216571649/8e8786ecfaf749079fd238d2bd76bda0/FLAG6a701538c [2021-12-15 16:45:55,605 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:45:55,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-12-15 16:45:55,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/216571649/8e8786ecfaf749079fd238d2bd76bda0/FLAG6a701538c [2021-12-15 16:45:55,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/216571649/8e8786ecfaf749079fd238d2bd76bda0 [2021-12-15 16:45:55,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:45:55,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:45:55,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:55,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:45:55,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:45:55,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:55" (1/1) ... [2021-12-15 16:45:55,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b521dcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:55, skipping insertion in model container [2021-12-15 16:45:55,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:55" (1/1) ... [2021-12-15 16:45:55,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:45:55,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:56,021 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-12-15 16:45:56,107 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-12-15 16:45:56,113 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:56,124 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) [2021-12-15 16:45:56,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55138176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:56, skipping insertion in model container [2021-12-15 16:45:56,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:56,125 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-15 16:45:56,126 INFO L158 Benchmark]: Toolchain (without parser) took 485.02ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 61.6MB in the beginning and 92.1MB in the end (delta: -30.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 16:45:56,127 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:45:56,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.72ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 61.3MB in the beginning and 92.1MB in the end (delta: -30.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 16:45:56,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 480.72ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 61.3MB in the beginning and 92.1MB in the end (delta: -30.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:45:57,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:45:57,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:45:57,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:45:57,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:45:57,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:45:57,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:45:57,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:45:57,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:45:57,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:45:57,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:45:57,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:45:57,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:45:57,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:45:57,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:45:57,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:45:57,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:45:57,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:45:57,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:45:57,656 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:45:57,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:45:57,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:45:57,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:45:57,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:45:57,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:45:57,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:45:57,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:45:57,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:45:57,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:45:57,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:45:57,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:45:57,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:45:57,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:45:57,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:45:57,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:45:57,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:45:57,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:45:57,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:45:57,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:45:57,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:45:57,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:45:57,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 16:45:57,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:45:57,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:45:57,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:45:57,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:45:57,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:45:57,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:45:57,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:45:57,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:45:57,714 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:45:57,714 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:45:57,715 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:45:57,715 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:45:57,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:45:57,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:45:57,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:45:57,716 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:45:57,716 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:45:57,716 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:45:57,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:45:57,716 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:45:57,716 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 16:45:57,717 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 16:45:57,717 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:45:57,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:45:57,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:45:57,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:45:57,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:45:57,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:57,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:45:57,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:45:57,727 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 16:45:57,727 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 16:45:57,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:45:57,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 16:45:57,728 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ccd4b93de7420a1f7847638daedeeee3b82eb082e434a23182d7e5e0aee2085 [2021-12-15 16:45:57,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:45:58,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:45:58,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:45:58,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:45:58,023 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:45:58,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-12-15 16:45:58,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244c176ee/14120de4cf2849c4995ffa48fb9d259d/FLAGbfcda63b4 [2021-12-15 16:45:58,578 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:45:58,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i [2021-12-15 16:45:58,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244c176ee/14120de4cf2849c4995ffa48fb9d259d/FLAGbfcda63b4 [2021-12-15 16:45:59,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244c176ee/14120de4cf2849c4995ffa48fb9d259d [2021-12-15 16:45:59,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:45:59,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:45:59,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:59,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:45:59,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:45:59,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c8e7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59, skipping insertion in model container [2021-12-15 16:45:59,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:45:59,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:59,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-12-15 16:45:59,567 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-12-15 16:45:59,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:59,581 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 16:45:59,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:59,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-12-15 16:45:59,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-12-15 16:45:59,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:59,675 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:45:59,702 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[37019,37032] [2021-12-15 16:45:59,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test2-1.i[47352,47365] [2021-12-15 16:45:59,736 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:59,772 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:45:59,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59 WrapperNode [2021-12-15 16:45:59,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:59,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:45:59,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:45:59,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:45:59,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,877 INFO L137 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 890 [2021-12-15 16:45:59,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:45:59,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:45:59,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:45:59,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:45:59,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:45:59,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:45:59,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:45:59,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:45:59,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (1/1) ... [2021-12-15 16:45:59,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:59,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:46:00,002 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) [2021-12-15 16:46:00,021 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 [2021-12-15 16:46:00,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 16:46:00,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 16:46:00,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 16:46:00,033 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 16:46:00,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 16:46:00,033 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 16:46:00,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 16:46:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 16:46:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 16:46:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 16:46:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 16:46:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 16:46:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 16:46:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:46:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 16:46:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:46:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:46:00,172 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:46:00,173 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:46:00,176 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 16:46:02,671 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:46:02,681 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:46:02,682 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-12-15 16:46:02,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:46:02 BoogieIcfgContainer [2021-12-15 16:46:02,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:46:02,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:46:02,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:46:02,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:46:02,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:45:59" (1/3) ... [2021-12-15 16:46:02,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9c7f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:46:02, skipping insertion in model container [2021-12-15 16:46:02,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:59" (2/3) ... [2021-12-15 16:46:02,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9c7f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:46:02, skipping insertion in model container [2021-12-15 16:46:02,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:46:02" (3/3) ... [2021-12-15 16:46:02,697 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test2-1.i [2021-12-15 16:46:02,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:46:02,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-12-15 16:46:02,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:46:02,743 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 16:46:02,743 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-12-15 16:46:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-15 16:46:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 16:46:02,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:02,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 16:46:02,775 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-15 16:46:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-12-15 16:46:02,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:02,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392313586] [2021-12-15 16:46:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:02,789 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:02,791 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) [2021-12-15 16:46:02,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 16:46:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:02,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:46:02,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:03,016 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 [2021-12-15 16:46:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:46:03,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:03,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:03,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392313586] [2021-12-15 16:46:03,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392313586] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:03,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:03,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:46:03,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759069147] [2021-12-15 16:46:03,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:03,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:46:03,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:03,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:46:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:03,053 INFO L87 Difference]: Start difference. First operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:04,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:04,193 INFO L93 Difference]: Finished difference Result 869 states and 925 transitions. [2021-12-15 16:46:04,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:46:04,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-15 16:46:04,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:04,206 INFO L225 Difference]: With dead ends: 869 [2021-12-15 16:46:04,206 INFO L226 Difference]: Without dead ends: 867 [2021-12-15 16:46:04,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:04,209 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 804 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:04,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 582 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-15 16:46:04,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-12-15 16:46:04,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 866. [2021-12-15 16:46:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 443 states have (on average 2.0474040632054176) internal successors, (907), 860 states have internal predecessors, (907), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-15 16:46:04,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 923 transitions. [2021-12-15 16:46:04,261 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 923 transitions. Word has length 3 [2021-12-15 16:46:04,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:04,262 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 923 transitions. [2021-12-15 16:46:04,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:04,262 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 923 transitions. [2021-12-15 16:46:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-15 16:46:04,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:04,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-15 16:46:04,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:04,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:04,471 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-15 16:46:04,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:04,472 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-12-15 16:46:04,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:04,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629789857] [2021-12-15 16:46:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:04,474 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:04,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:04,475 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) [2021-12-15 16:46:04,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 16:46:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:04,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:46:04,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:04,644 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 [2021-12-15 16:46:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:46:04,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:04,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:04,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629789857] [2021-12-15 16:46:04,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629789857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:04,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:04,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:46:04,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874361789] [2021-12-15 16:46:04,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:04,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:46:04,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:04,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:46:04,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:04,656 INFO L87 Difference]: Start difference. First operand 866 states and 923 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:06,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:06,227 INFO L93 Difference]: Finished difference Result 1085 states and 1173 transitions. [2021-12-15 16:46:06,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:46:06,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-15 16:46:06,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:06,231 INFO L225 Difference]: With dead ends: 1085 [2021-12-15 16:46:06,231 INFO L226 Difference]: Without dead ends: 1085 [2021-12-15 16:46:06,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:06,232 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 240 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:06,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1312 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-15 16:46:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2021-12-15 16:46:06,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 998. [2021-12-15 16:46:06,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 571 states have (on average 2.0052539404553413) internal successors, (1145), 992 states have internal predecessors, (1145), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-15 16:46:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1171 transitions. [2021-12-15 16:46:06,253 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1171 transitions. Word has length 3 [2021-12-15 16:46:06,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:06,254 INFO L470 AbstractCegarLoop]: Abstraction has 998 states and 1171 transitions. [2021-12-15 16:46:06,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1171 transitions. [2021-12-15 16:46:06,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 16:46:06,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:06,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:06,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:06,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:06,461 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-15 16:46:06,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:06,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2021-12-15 16:46:06,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:06,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143657997] [2021-12-15 16:46:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:06,462 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:06,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:06,466 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) [2021-12-15 16:46:06,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 16:46:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:06,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 16:46:06,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:06,588 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 [2021-12-15 16:46:06,594 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 [2021-12-15 16:46:06,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 16:46:06,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-15 16:46:06,650 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-15 16:46:06,651 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 14 treesize of output 14 [2021-12-15 16:46:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:46:06,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:06,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:06,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143657997] [2021-12-15 16:46:06,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143657997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:06,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:06,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:46:06,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480236988] [2021-12-15 16:46:06,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:06,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:46:06,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:06,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:46:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:06,670 INFO L87 Difference]: Start difference. First operand 998 states and 1171 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:08,240 INFO L93 Difference]: Finished difference Result 988 states and 1160 transitions. [2021-12-15 16:46:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:46:08,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-15 16:46:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:08,243 INFO L225 Difference]: With dead ends: 988 [2021-12-15 16:46:08,243 INFO L226 Difference]: Without dead ends: 988 [2021-12-15 16:46:08,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:08,244 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 874 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:08,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 347 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-15 16:46:08,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-12-15 16:46:08,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 855. [2021-12-15 16:46:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 443 states have (on average 2.020316027088036) internal successors, (895), 849 states have internal predecessors, (895), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-15 16:46:08,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 911 transitions. [2021-12-15 16:46:08,263 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 911 transitions. Word has length 7 [2021-12-15 16:46:08,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:08,263 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 911 transitions. [2021-12-15 16:46:08,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:08,264 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 911 transitions. [2021-12-15 16:46:08,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:46:08,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:08,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:08,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:08,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:08,476 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-15 16:46:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-12-15 16:46:08,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:08,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066533837] [2021-12-15 16:46:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:08,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:08,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:08,481 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) [2021-12-15 16:46:08,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 16:46:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:08,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:46:08,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:08,605 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 [2021-12-15 16:46:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:46:08,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:08,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:08,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066533837] [2021-12-15 16:46:08,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066533837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:08,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:08,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:46:08,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354800417] [2021-12-15 16:46:08,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:08,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:46:08,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:08,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:46:08,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:08,619 INFO L87 Difference]: Start difference. First operand 855 states and 911 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:09,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:09,757 INFO L93 Difference]: Finished difference Result 1031 states and 1118 transitions. [2021-12-15 16:46:09,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:46:09,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 16:46:09,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:09,764 INFO L225 Difference]: With dead ends: 1031 [2021-12-15 16:46:09,764 INFO L226 Difference]: Without dead ends: 1031 [2021-12-15 16:46:09,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:09,765 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 814 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:09,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 871 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-15 16:46:09,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-12-15 16:46:09,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 808. [2021-12-15 16:46:09,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 443 states have (on average 1.9142212189616252) internal successors, (848), 802 states have internal predecessors, (848), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-15 16:46:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 864 transitions. [2021-12-15 16:46:09,785 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 864 transitions. Word has length 8 [2021-12-15 16:46:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:09,785 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 864 transitions. [2021-12-15 16:46:09,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:09,786 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 864 transitions. [2021-12-15 16:46:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:46:09,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:09,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:09,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:09,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:09,993 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-15 16:46:09,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:09,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-12-15 16:46:09,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:09,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754620941] [2021-12-15 16:46:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:09,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:09,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:09,996 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) [2021-12-15 16:46:10,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 16:46:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:10,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:46:10,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:10,096 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 [2021-12-15 16:46:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:46:10,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:10,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:10,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754620941] [2021-12-15 16:46:10,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754620941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:10,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:10,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:46:10,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123870935] [2021-12-15 16:46:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:10,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:46:10,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:10,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:46:10,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:10,118 INFO L87 Difference]: Start difference. First operand 808 states and 864 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:11,604 INFO L93 Difference]: Finished difference Result 1098 states and 1187 transitions. [2021-12-15 16:46:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:46:11,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 16:46:11,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:11,608 INFO L225 Difference]: With dead ends: 1098 [2021-12-15 16:46:11,608 INFO L226 Difference]: Without dead ends: 1098 [2021-12-15 16:46:11,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:11,609 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 501 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:11,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1229 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-15 16:46:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-12-15 16:46:11,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 830. [2021-12-15 16:46:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 475 states have (on average 1.9031578947368422) internal successors, (904), 824 states have internal predecessors, (904), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-15 16:46:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 920 transitions. [2021-12-15 16:46:11,632 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 920 transitions. Word has length 8 [2021-12-15 16:46:11,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:11,632 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 920 transitions. [2021-12-15 16:46:11,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:11,632 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 920 transitions. [2021-12-15 16:46:11,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 16:46:11,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:11,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:11,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:11,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:11,833 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-15 16:46:11,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:11,834 INFO L85 PathProgramCache]: Analyzing trace with hash 2106311903, now seen corresponding path program 1 times [2021-12-15 16:46:11,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:11,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466175100] [2021-12-15 16:46:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:11,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:11,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:11,836 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) [2021-12-15 16:46:11,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-15 16:46:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:11,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 16:46:11,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:11,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 16:46:11,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 16:46:11,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 16:46:11,986 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-12-15 16:46:11,997 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-12-15 16:46:12,041 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-15 16:46:12,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-12-15 16:46:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:46:12,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:12,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:12,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466175100] [2021-12-15 16:46:12,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466175100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:12,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:12,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:46:12,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336032758] [2021-12-15 16:46:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:12,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:46:12,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:12,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:46:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:12,058 INFO L87 Difference]: Start difference. First operand 830 states and 920 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:12,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:12,870 INFO L93 Difference]: Finished difference Result 1051 states and 1171 transitions. [2021-12-15 16:46:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:46:12,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-15 16:46:12,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:12,873 INFO L225 Difference]: With dead ends: 1051 [2021-12-15 16:46:12,873 INFO L226 Difference]: Without dead ends: 1051 [2021-12-15 16:46:12,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:46:12,874 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 237 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:12,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 2333 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-15 16:46:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2021-12-15 16:46:12,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 832. [2021-12-15 16:46:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 477 states have (on average 1.89937106918239) internal successors, (906), 826 states have internal predecessors, (906), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-15 16:46:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 922 transitions. [2021-12-15 16:46:12,888 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 922 transitions. Word has length 10 [2021-12-15 16:46:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:12,888 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 922 transitions. [2021-12-15 16:46:12,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 922 transitions. [2021-12-15 16:46:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-15 16:46:12,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:12,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:12,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:13,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:13,099 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-15 16:46:13,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:13,099 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-12-15 16:46:13,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:13,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311811969] [2021-12-15 16:46:13,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:13,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:13,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:13,101 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) [2021-12-15 16:46:13,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-15 16:46:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:13,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:46:13,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:13,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:46:13,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:13,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:13,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311811969] [2021-12-15 16:46:13,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311811969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:13,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:13,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:46:13,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253270748] [2021-12-15 16:46:13,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:13,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:46:13,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:13,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:46:13,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:13,243 INFO L87 Difference]: Start difference. First operand 832 states and 922 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:13,261 INFO L93 Difference]: Finished difference Result 801 states and 890 transitions. [2021-12-15 16:46:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:46:13,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-15 16:46:13,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:13,263 INFO L225 Difference]: With dead ends: 801 [2021-12-15 16:46:13,263 INFO L226 Difference]: Without dead ends: 801 [2021-12-15 16:46:13,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:46:13,264 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 776 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:13,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 839 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:46:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-12-15 16:46:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 790. [2021-12-15 16:46:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 459 states have (on average 1.8801742919389979) internal successors, (863), 784 states have internal predecessors, (863), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-15 16:46:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 879 transitions. [2021-12-15 16:46:13,275 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 879 transitions. Word has length 18 [2021-12-15 16:46:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:13,276 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 879 transitions. [2021-12-15 16:46:13,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 879 transitions. [2021-12-15 16:46:13,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 16:46:13,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:13,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:13,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:13,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:13,484 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-15 16:46:13,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:13,484 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-12-15 16:46:13,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:13,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970689392] [2021-12-15 16:46:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:13,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:13,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:13,487 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:46:13,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-15 16:46:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:13,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:46:13,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:46:13,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:13,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:13,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970689392] [2021-12-15 16:46:13,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970689392] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:13,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:13,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:46:13,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262031724] [2021-12-15 16:46:13,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:13,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:46:13,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:13,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:46:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:13,638 INFO L87 Difference]: Start difference. First operand 790 states and 879 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:46:13,692 INFO L93 Difference]: Finished difference Result 780 states and 862 transitions. [2021-12-15 16:46:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:46:13,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-15 16:46:13,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:46:13,695 INFO L225 Difference]: With dead ends: 780 [2021-12-15 16:46:13,695 INFO L226 Difference]: Without dead ends: 780 [2021-12-15 16:46:13,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:46:13,696 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 747 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:13,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1549 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:46:13,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-12-15 16:46:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 768. [2021-12-15 16:46:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 451 states have (on average 1.8492239467849223) internal successors, (834), 762 states have internal predecessors, (834), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-15 16:46:13,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 850 transitions. [2021-12-15 16:46:13,706 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 850 transitions. Word has length 20 [2021-12-15 16:46:13,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:46:13,706 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 850 transitions. [2021-12-15 16:46:13,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:13,706 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 850 transitions. [2021-12-15 16:46:13,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 16:46:13,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:46:13,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:46:13,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-15 16:46:13,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:13,916 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-12-15 16:46:13,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:46:13,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-12-15 16:46:13,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:46:13,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905733411] [2021-12-15 16:46:13,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:46:13,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:46:13,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:46:13,918 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 16:46:13,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-15 16:46:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:46:14,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:46:14,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:46:14,049 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 [2021-12-15 16:46:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:46:14,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:46:14,132 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:46:14,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905733411] [2021-12-15 16:46:14,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905733411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:46:14,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:46:14,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:46:14,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824955257] [2021-12-15 16:46:14,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:46:14,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:46:14,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:46:14,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:46:14,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:46:14,134 INFO L87 Difference]: Start difference. First operand 768 states and 850 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:46:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:46:14,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:46:14,290 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 164 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:46:14,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 79 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:46:14,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-15 16:46:14,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 16:46:14,498 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructOldVarsAssignment(OldVarsAssignmentCache.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getOldVarsAssignment(OldVarsAssignmentCache.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:387) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkReturn(IncrementalHoareTripleChecker.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkReturn(ChainingHoareTripleChecker.java:486) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkReturn(ChainingHoareTripleChecker.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkReturn(CachingHoareTripleChecker.java:153) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$ReturnSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:442) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.returnSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.returnSuccessors(TotalizeNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.returnSuccessors(ComplementDeterministicNwa.java:142) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessors(ProductNwa.java:284) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.returnSuccessorsGivenHier(ProductNwa.java:308) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addReturnsAndSuccessors(NestedWordAutomatonReachableStates.java:1118) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:950) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 16:46:14,500 INFO L158 Benchmark]: Toolchain (without parser) took 15438.14ms. Allocated memory was 58.7MB in the beginning and 121.6MB in the end (delta: 62.9MB). Free memory was 34.7MB in the beginning and 78.7MB in the end (delta: -44.0MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2021-12-15 16:46:14,500 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:46:14,500 INFO L158 Benchmark]: CACSL2BoogieTranslator took 710.47ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 34.5MB in the beginning and 45.3MB in the end (delta: -10.8MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2021-12-15 16:46:14,501 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.33ms. Allocated memory is still 81.8MB. Free memory was 45.3MB in the beginning and 60.1MB in the end (delta: -14.8MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2021-12-15 16:46:14,501 INFO L158 Benchmark]: Boogie Preprocessor took 99.80ms. Allocated memory is still 81.8MB. Free memory was 60.1MB in the beginning and 53.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 16:46:14,501 INFO L158 Benchmark]: RCFGBuilder took 2706.19ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 41.6MB in the end (delta: 11.7MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2021-12-15 16:46:14,501 INFO L158 Benchmark]: TraceAbstraction took 11807.65ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 71.2MB in the beginning and 78.7MB in the end (delta: -7.5MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-12-15 16:46:14,502 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory is still 40.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 710.47ms. Allocated memory was 58.7MB in the beginning and 81.8MB in the end (delta: 23.1MB). Free memory was 34.5MB in the beginning and 45.3MB in the end (delta: -10.8MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.33ms. Allocated memory is still 81.8MB. Free memory was 45.3MB in the beginning and 60.1MB in the end (delta: -14.8MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 99.80ms. Allocated memory is still 81.8MB. Free memory was 60.1MB in the beginning and 53.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2706.19ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 41.6MB in the end (delta: 11.7MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * TraceAbstraction took 11807.65ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 71.2MB in the beginning and 78.7MB in the end (delta: -7.5MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 16:46:14,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable