./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.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_FNV_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0b44034f537cfca2c2eab71fbff4de4b57572a56ff00cd4bbb31f940e955385 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:45:07,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:45:07,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:45:07,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:45:07,749 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:45:07,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:45:07,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:45:07,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:45:07,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:45:07,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:45:07,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:45:07,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:45:07,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:45:07,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:45:07,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:45:07,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:45:07,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:45:07,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:45:07,773 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:45:07,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:45:07,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:45:07,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:45:07,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:45:07,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:45:07,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:45:07,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:45:07,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:45:07,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:45:07,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:45:07,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:45:07,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:45:07,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:45:07,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:45:07,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:45:07,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:45:07,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:45:07,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:45:07,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:45:07,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:45:07,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:45:07,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:45:07,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 16:45:07,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:45:07,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:45:07,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:45:07,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:45:07,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:45:07,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:45:07,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:45:07,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:45:07,825 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:45:07,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:45:07,826 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:45:07,826 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:45:07,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:45:07,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:45:07,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:45:07,827 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:45:07,827 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:45:07,827 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:45:07,828 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:45:07,828 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:45:07,828 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:45:07,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:45:07,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:45:07,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:45:07,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:45:07,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:07,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:45:07,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:45:07,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:45:07,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:45:07,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:45:07,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b44034f537cfca2c2eab71fbff4de4b57572a56ff00cd4bbb31f940e955385 [2021-12-15 16:45:08,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:45:08,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:45:08,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:45:08,089 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:45:08,090 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:45:08,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i [2021-12-15 16:45:08,148 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47aca6006/2463392d585641009eaa6fc373ebeefb/FLAG8e6b7203d [2021-12-15 16:45:08,669 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:45:08,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i [2021-12-15 16:45:08,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47aca6006/2463392d585641009eaa6fc373ebeefb/FLAG8e6b7203d [2021-12-15 16:45:09,167 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47aca6006/2463392d585641009eaa6fc373ebeefb [2021-12-15 16:45:09,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:45:09,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:45:09,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:09,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:45:09,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:45:09,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:09" (1/1) ... [2021-12-15 16:45:09,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70399512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:09, skipping insertion in model container [2021-12-15 16:45:09,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:09" (1/1) ... [2021-12-15 16:45:09,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:45:09,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:09,545 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_FNV_test1-2.i[33021,33034] [2021-12-15 16:45:09,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:09,639 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 16:45:09,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@703cd5a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:09, skipping insertion in model container [2021-12-15 16:45:09,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:09,640 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-15 16:45:09,642 INFO L158 Benchmark]: Toolchain (without parser) took 469.69ms. Allocated memory is still 98.6MB. Free memory was 57.8MB in the beginning and 69.5MB in the end (delta: -11.7MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2021-12-15 16:45:09,642 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:45:09,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 465.99ms. Allocated memory is still 98.6MB. Free memory was 57.6MB in the beginning and 69.5MB in the end (delta: -11.9MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2021-12-15 16:45:09,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 77.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 465.99ms. Allocated memory is still 98.6MB. Free memory was 57.6MB in the beginning and 69.5MB in the end (delta: -11.9MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_FNV_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0b44034f537cfca2c2eab71fbff4de4b57572a56ff00cd4bbb31f940e955385 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:45:11,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:45:11,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:45:11,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:45:11,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:45:11,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:45:11,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:45:11,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:45:11,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:45:11,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:45:11,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:45:11,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:45:11,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:45:11,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:45:11,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:45:11,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:45:11,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:45:11,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:45:11,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:45:11,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:45:11,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:45:11,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:45:11,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:45:11,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:45:11,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:45:11,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:45:11,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:45:11,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:45:11,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:45:11,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:45:11,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:45:11,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:45:11,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:45:11,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:45:11,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:45:11,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:45:11,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:45:11,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:45:11,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:45:11,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:45:11,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:45:11,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 16:45:11,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:45:11,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:45:11,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:45:11,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:45:11,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:45:11,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:45:11,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:45:11,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:45:11,533 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:45:11,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:45:11,534 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:45:11,534 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:45:11,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:45:11,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:45:11,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:45:11,535 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 16:45:11,535 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 16:45:11,535 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 16:45:11,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:45:11,535 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 16:45:11,536 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 16:45:11,536 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 16:45:11,536 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:45:11,536 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:45:11,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:45:11,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:45:11,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:45:11,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:11,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:45:11,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:45:11,537 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 16:45:11,538 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 16:45:11,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:45:11,538 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 16:45:11,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b44034f537cfca2c2eab71fbff4de4b57572a56ff00cd4bbb31f940e955385 [2021-12-15 16:45:11,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:45:11,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:45:11,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:45:11,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:45:11,869 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:45:11,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i [2021-12-15 16:45:11,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88099ae6f/a7d2d3c4ef1e49959e2573604be09c27/FLAG3943f0c9f [2021-12-15 16:45:12,529 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:45:12,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i [2021-12-15 16:45:12,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88099ae6f/a7d2d3c4ef1e49959e2573604be09c27/FLAG3943f0c9f [2021-12-15 16:45:12,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88099ae6f/a7d2d3c4ef1e49959e2573604be09c27 [2021-12-15 16:45:12,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:45:12,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:45:12,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:12,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:45:12,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:45:12,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:12" (1/1) ... [2021-12-15 16:45:12,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790a178f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:12, skipping insertion in model container [2021-12-15 16:45:12,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:45:12" (1/1) ... [2021-12-15 16:45:12,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:45:12,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:13,182 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_FNV_test1-2.i[33021,33034] [2021-12-15 16:45:13,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:13,431 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 16:45:13,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:45:13,488 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_FNV_test1-2.i[33021,33034] [2021-12-15 16:45:13,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:13,555 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:45:13,595 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_FNV_test1-2.i[33021,33034] [2021-12-15 16:45:13,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:45:13,692 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:45:13,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13 WrapperNode [2021-12-15 16:45:13,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:45:13,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:45:13,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:45:13,695 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:45:13,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (1/1) ... [2021-12-15 16:45:13,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (1/1) ... [2021-12-15 16:45:13,788 INFO L137 Inliner]: procedures = 180, calls = 237, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 792 [2021-12-15 16:45:13,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:45:13,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:45:13,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:45:13,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:45:13,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (1/1) ... [2021-12-15 16:45:13,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (1/1) ... [2021-12-15 16:45:13,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (1/1) ... [2021-12-15 16:45:13,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (1/1) ... [2021-12-15 16:45:13,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (1/1) ... [2021-12-15 16:45:13,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (1/1) ... [2021-12-15 16:45:13,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (1/1) ... [2021-12-15 16:45:13,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:45:13,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:45:13,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:45:13,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:45:13,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (1/1) ... [2021-12-15 16:45:13,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:45:13,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:45:13,949 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 16:45:13,980 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 16:45:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 16:45:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 16:45:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-15 16:45:14,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-15 16:45:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 16:45:14,001 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 16:45:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 16:45:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:45:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 16:45:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 16:45:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 16:45:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 16:45:14,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 16:45:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 16:45:14,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:45:14,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:45:14,232 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:45:14,234 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:45:14,237 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-15 16:45:17,144 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:45:17,155 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:45:17,162 INFO L301 CfgBuilder]: Removed 40 assume(true) statements. [2021-12-15 16:45:17,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:45:17 BoogieIcfgContainer [2021-12-15 16:45:17,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:45:17,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:45:17,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:45:17,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:45:17,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:45:12" (1/3) ... [2021-12-15 16:45:17,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2c6010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:45:17, skipping insertion in model container [2021-12-15 16:45:17,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:45:13" (2/3) ... [2021-12-15 16:45:17,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2c6010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:45:17, skipping insertion in model container [2021-12-15 16:45:17,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:45:17" (3/3) ... [2021-12-15 16:45:17,173 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test1-2.i [2021-12-15 16:45:17,178 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:45:17,178 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 435 error locations. [2021-12-15 16:45:17,213 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:45:17,218 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 16:45:17,218 INFO L340 AbstractCegarLoop]: Starting to check reachability of 435 error locations. [2021-12-15 16:45:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 867 states, 419 states have (on average 2.252983293556086) internal successors, (944), 861 states have internal predecessors, (944), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-15 16:45:17,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:45:17,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:17,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:45:17,247 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-12-15 16:45:17,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:17,256 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2021-12-15 16:45:17,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:17,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794787079] [2021-12-15 16:45:17,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:17,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:17,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:17,275 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 16:45:17,338 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 16:45:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:17,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 16:45:17,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:17,459 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 16:45:17,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:17,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:17,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794787079] [2021-12-15 16:45:17,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794787079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:17,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:17,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:45:17,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986625380] [2021-12-15 16:45:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:17,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 16:45:17,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:17,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 16:45:17,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 16:45:17,495 INFO L87 Difference]: Start difference. First operand has 867 states, 419 states have (on average 2.252983293556086) internal successors, (944), 861 states have internal predecessors, (944), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:17,569 INFO L93 Difference]: Finished difference Result 858 states and 916 transitions. [2021-12-15 16:45:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 16:45:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 16:45:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:17,590 INFO L225 Difference]: With dead ends: 858 [2021-12-15 16:45:17,591 INFO L226 Difference]: Without dead ends: 856 [2021-12-15 16:45:17,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 16:45:17,595 INFO L933 BasicCegarLoop]: 916 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:17,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:45:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-12-15 16:45:17,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2021-12-15 16:45:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 414 states have (on average 2.1449275362318843) internal successors, (888), 850 states have internal predecessors, (888), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-15 16:45:17,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 914 transitions. [2021-12-15 16:45:17,681 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 914 transitions. Word has length 5 [2021-12-15 16:45:17,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:17,682 INFO L470 AbstractCegarLoop]: Abstraction has 856 states and 914 transitions. [2021-12-15 16:45:17,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 914 transitions. [2021-12-15 16:45:17,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:45:17,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:17,683 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:45:17,693 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 16:45:17,892 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 16:45:17,893 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-12-15 16:45:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:17,894 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2021-12-15 16:45:17,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:17,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613297417] [2021-12-15 16:45:17,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:17,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:17,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:17,900 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 16:45:17,902 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 16:45:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:17,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:45:18,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:18,062 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 16:45:18,078 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 16:45:18,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:18,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:18,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613297417] [2021-12-15 16:45:18,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613297417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:18,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:18,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:45:18,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140361318] [2021-12-15 16:45:18,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:18,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:18,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:18,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:18,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:18,093 INFO L87 Difference]: Start difference. First operand 856 states and 914 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:19,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:19,483 INFO L93 Difference]: Finished difference Result 814 states and 873 transitions. [2021-12-15 16:45:19,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:19,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 16:45:19,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:19,489 INFO L225 Difference]: With dead ends: 814 [2021-12-15 16:45:19,489 INFO L226 Difference]: Without dead ends: 814 [2021-12-15 16:45:19,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:19,490 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 596 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:19,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 662 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-15 16:45:19,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-12-15 16:45:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 807. [2021-12-15 16:45:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 414 states have (on average 2.026570048309179) internal successors, (839), 801 states have internal predecessors, (839), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-15 16:45:19,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 865 transitions. [2021-12-15 16:45:19,524 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 865 transitions. Word has length 5 [2021-12-15 16:45:19,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:19,524 INFO L470 AbstractCegarLoop]: Abstraction has 807 states and 865 transitions. [2021-12-15 16:45:19,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:19,525 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 865 transitions. [2021-12-15 16:45:19,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:45:19,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:19,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:45:19,536 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 16:45:19,733 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 16:45:19,734 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-12-15 16:45:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2021-12-15 16:45:19,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:19,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574032959] [2021-12-15 16:45:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:19,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:19,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:19,739 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 16:45:19,741 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 16:45:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:19,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:45:19,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:19,848 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 16:45:19,868 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 16:45:19,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:19,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:19,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574032959] [2021-12-15 16:45:19,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574032959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:19,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:19,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:45:19,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33641011] [2021-12-15 16:45:19,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:19,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:19,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:19,871 INFO L87 Difference]: Start difference. First operand 807 states and 865 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:21,340 INFO L93 Difference]: Finished difference Result 874 states and 936 transitions. [2021-12-15 16:45:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:21,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-15 16:45:21,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:21,345 INFO L225 Difference]: With dead ends: 874 [2021-12-15 16:45:21,345 INFO L226 Difference]: Without dead ends: 874 [2021-12-15 16:45:21,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:21,350 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 254 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:21,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 1065 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-15 16:45:21,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2021-12-15 16:45:21,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 829. [2021-12-15 16:45:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 446 states have (on average 2.006726457399103) internal successors, (895), 823 states have internal predecessors, (895), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-15 16:45:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 921 transitions. [2021-12-15 16:45:21,378 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 921 transitions. Word has length 5 [2021-12-15 16:45:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:21,378 INFO L470 AbstractCegarLoop]: Abstraction has 829 states and 921 transitions. [2021-12-15 16:45:21,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 921 transitions. [2021-12-15 16:45:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 16:45:21,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:21,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:45:21,390 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 16:45:21,588 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 16:45:21,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-12-15 16:45:21,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:21,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1156735106, now seen corresponding path program 1 times [2021-12-15 16:45:21,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:21,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807340100] [2021-12-15 16:45:21,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:21,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:21,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:21,591 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 16:45:21,593 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 16:45:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:21,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:45:21,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:21,688 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 16:45:21,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:21,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:21,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807340100] [2021-12-15 16:45:21,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807340100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:21,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:21,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:21,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717916407] [2021-12-15 16:45:21,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:21,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:21,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:21,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:21,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:21,716 INFO L87 Difference]: Start difference. First operand 829 states and 921 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 16:45:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:21,806 INFO L93 Difference]: Finished difference Result 1410 states and 1563 transitions. [2021-12-15 16:45:21,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:21,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-12-15 16:45:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:21,821 INFO L225 Difference]: With dead ends: 1410 [2021-12-15 16:45:21,821 INFO L226 Difference]: Without dead ends: 1410 [2021-12-15 16:45:21,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 16:45:21,824 INFO L933 BasicCegarLoop]: 1076 mSDtfsCounter, 569 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:21,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 1925 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:45:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2021-12-15 16:45:21,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 830. [2021-12-15 16:45:21,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 447 states have (on average 2.004474272930649) internal successors, (896), 824 states have internal predecessors, (896), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-15 16:45:21,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 922 transitions. [2021-12-15 16:45:21,848 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 922 transitions. Word has length 6 [2021-12-15 16:45:21,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:21,848 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 922 transitions. [2021-12-15 16:45:21,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 16:45:21,849 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 922 transitions. [2021-12-15 16:45:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 16:45:21,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:21,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:21,858 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 16:45:22,058 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 16:45:22,059 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-12-15 16:45:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2021-12-15 16:45:22,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:22,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537738610] [2021-12-15 16:45:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:22,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:22,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:22,065 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 16:45:22,066 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 16:45:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:22,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-15 16:45:22,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:22,223 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 16:45:22,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:22,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:22,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537738610] [2021-12-15 16:45:22,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537738610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:22,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:22,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:22,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793742206] [2021-12-15 16:45:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:22,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:45:22,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:22,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:45:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:45:22,226 INFO L87 Difference]: Start difference. First operand 830 states and 922 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:22,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:22,255 INFO L93 Difference]: Finished difference Result 794 states and 885 transitions. [2021-12-15 16:45:22,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:45:22,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-15 16:45:22,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:22,259 INFO L225 Difference]: With dead ends: 794 [2021-12-15 16:45:22,260 INFO L226 Difference]: Without dead ends: 794 [2021-12-15 16:45:22,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 16:45:22,260 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 773 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 837 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 16:45:22,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 837 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:45:22,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-12-15 16:45:22,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 788. [2021-12-15 16:45:22,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 429 states have (on average 1.9883449883449884) internal successors, (853), 782 states have internal predecessors, (853), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-15 16:45:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 879 transitions. [2021-12-15 16:45:22,278 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 879 transitions. Word has length 11 [2021-12-15 16:45:22,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:22,278 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 879 transitions. [2021-12-15 16:45:22,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:22,279 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 879 transitions. [2021-12-15 16:45:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 16:45:22,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:22,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:45:22,293 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 16:45:22,489 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 16:45:22,490 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-12-15 16:45:22,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:22,490 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2021-12-15 16:45:22,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:22,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884747354] [2021-12-15 16:45:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:22,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:22,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:22,520 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 16:45:22,520 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 16:45:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:22,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:45:22,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:22,692 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 16:45:22,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:22,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:22,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884747354] [2021-12-15 16:45:22,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884747354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:22,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:22,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 16:45:22,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220958219] [2021-12-15 16:45:22,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:22,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:22,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:22,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:22,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:22,702 INFO L87 Difference]: Start difference. First operand 788 states and 879 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:45:22,780 INFO L93 Difference]: Finished difference Result 773 states and 857 transitions. [2021-12-15 16:45:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:22,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-15 16:45:22,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:45:22,784 INFO L225 Difference]: With dead ends: 773 [2021-12-15 16:45:22,784 INFO L226 Difference]: Without dead ends: 773 [2021-12-15 16:45:22,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 16:45:22,786 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 744 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1547 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 16:45:22,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 1547 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:45:22,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-12-15 16:45:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 766. [2021-12-15 16:45:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 421 states have (on average 1.9572446555819478) internal successors, (824), 760 states have internal predecessors, (824), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-15 16:45:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 850 transitions. [2021-12-15 16:45:22,801 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 850 transitions. Word has length 13 [2021-12-15 16:45:22,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:45:22,802 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 850 transitions. [2021-12-15 16:45:22,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 16:45:22,802 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 850 transitions. [2021-12-15 16:45:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 16:45:22,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:45:22,803 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] [2021-12-15 16:45:22,815 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 16:45:23,013 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 16:45:23,013 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 431 more)] === [2021-12-15 16:45:23,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:45:23,014 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2021-12-15 16:45:23,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 16:45:23,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716236410] [2021-12-15 16:45:23,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:45:23,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 16:45:23,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 16:45:23,016 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 16:45:23,016 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 16:45:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:45:23,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 16:45:23,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:45:23,149 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 16:45:23,222 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 16:45:23,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 16:45:23,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 16:45:23,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716236410] [2021-12-15 16:45:23,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716236410] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:45:23,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:45:23,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:45:23,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718357806] [2021-12-15 16:45:23,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:45:23,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:45:23,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 16:45:23,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:45:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:45:23,225 INFO L87 Difference]: Start difference. First operand 766 states and 850 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 16:45:23,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:45:23,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 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 16:45:23,372 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 164 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:45:23,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 73 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:45:23,383 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 16:45:23,573 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 16:45:23,574 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 16:45:23,578 INFO L158 Benchmark]: Toolchain (without parser) took 10783.16ms. Allocated memory was 60.8MB in the beginning and 134.2MB in the end (delta: 73.4MB). Free memory was 37.6MB in the beginning and 73.3MB in the end (delta: -35.6MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2021-12-15 16:45:23,578 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 43.3MB in the beginning and 43.2MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 16:45:23,578 INFO L158 Benchmark]: CACSL2BoogieTranslator took 897.87ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 37.5MB in the beginning and 58.0MB in the end (delta: -20.5MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-12-15 16:45:23,578 INFO L158 Benchmark]: Boogie Procedure Inliner took 103.72ms. Allocated memory is still 88.1MB. Free memory was 58.0MB in the beginning and 52.4MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 16:45:23,579 INFO L158 Benchmark]: Boogie Preprocessor took 110.46ms. Allocated memory is still 88.1MB. Free memory was 52.4MB in the beginning and 46.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 16:45:23,579 INFO L158 Benchmark]: RCFGBuilder took 3256.96ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 45.8MB in the beginning and 56.5MB in the end (delta: -10.7MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-12-15 16:45:23,579 INFO L158 Benchmark]: TraceAbstraction took 6409.10ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 55.8MB in the beginning and 73.3MB in the end (delta: -17.5MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-12-15 16:45:23,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 43.3MB in the beginning and 43.2MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 897.87ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 37.5MB in the beginning and 58.0MB in the end (delta: -20.5MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 103.72ms. Allocated memory is still 88.1MB. Free memory was 58.0MB in the beginning and 52.4MB in the end (delta: 5.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 110.46ms. Allocated memory is still 88.1MB. Free memory was 52.4MB in the beginning and 46.2MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 3256.96ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 45.8MB in the beginning and 56.5MB in the end (delta: -10.7MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6409.10ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 55.8MB in the beginning and 73.3MB in the end (delta: -17.5MB). Peak memory consumption was 4.9MB. 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 16:45:23,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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