./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/20020406-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/20020406-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF --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 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:32:58,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:32:58,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:32:58,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:32:58,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:32:58,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:32:58,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:32:58,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:32:58,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:32:58,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:32:58,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:32:58,661 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:32:58,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:32:58,665 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:32:58,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:32:58,671 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:32:58,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:32:58,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:32:58,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:32:58,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:32:58,693 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:32:58,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:32:58,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:32:58,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:32:58,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:32:58,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:32:58,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:32:58,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:32:58,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:32:58,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:32:58,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:32:58,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:32:58,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:32:58,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:32:58,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:32:58,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:32:58,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:32:58,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:32:58,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:32:58,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:32:58,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:32:58,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 06:32:58,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:32:58,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:32:58,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:32:58,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:32:58,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:32:58,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:32:58,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:32:58,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:32:58,753 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:32:58,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:32:58,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:32:58,754 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:32:58,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:32:58,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:32:58,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:32:58,755 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:32:58,756 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:32:58,756 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:32:58,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:32:58,756 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:32:58,757 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:32:58,757 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:32:58,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:32:58,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:32:58,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:32:58,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:32:58,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:32:58,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:32:58,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:32:58,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:32:58,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:32:58,760 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae [2021-11-20 06:32:59,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:32:59,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:32:59,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:32:59,101 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:32:59,102 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:32:59,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety/20020406-1.i [2021-11-20 06:32:59,225 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/data/9c554b7cc/602ea98f97864f6f96fbe33f3d13d8a1/FLAG1991a56bb [2021-11-20 06:32:59,978 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:32:59,979 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/sv-benchmarks/c/memsafety/20020406-1.i [2021-11-20 06:33:00,005 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/data/9c554b7cc/602ea98f97864f6f96fbe33f3d13d8a1/FLAG1991a56bb [2021-11-20 06:33:00,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/data/9c554b7cc/602ea98f97864f6f96fbe33f3d13d8a1 [2021-11-20 06:33:00,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:33:00,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:33:00,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:33:00,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:33:00,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:33:00,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:33:00" (1/1) ... [2021-11-20 06:33:00,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b2f088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:00, skipping insertion in model container [2021-11-20 06:33:00,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:33:00" (1/1) ... [2021-11-20 06:33:00,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:33:00,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:33:00,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:33:00,903 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) [2021-11-20 06:33:00,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e3cb157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:00, skipping insertion in model container [2021-11-20 06:33:00,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:33:00,904 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 06:33:00,907 INFO L158 Benchmark]: Toolchain (without parser) took 723.45ms. Allocated memory is still 111.1MB. Free memory was 73.4MB in the beginning and 59.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:33:00,907 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:33:00,908 INFO L158 Benchmark]: CACSL2BoogieTranslator took 717.40ms. Allocated memory is still 111.1MB. Free memory was 73.2MB in the beginning and 59.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:33:00,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 48.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 717.40ms. Allocated memory is still 111.1MB. Free memory was 73.2MB in the beginning and 59.2MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 897]: 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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/20020406-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF --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 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:33:03,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:33:03,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:33:03,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:33:03,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:33:03,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:33:03,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:33:03,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:33:03,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:33:03,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:33:03,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:33:03,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:33:03,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:33:03,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:33:03,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:33:03,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:33:03,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:33:03,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:33:03,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:33:03,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:33:03,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:33:03,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:33:03,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:33:03,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:33:03,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:33:03,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:33:03,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:33:03,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:33:03,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:33:03,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:33:03,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:33:03,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:33:03,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:33:03,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:33:03,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:33:03,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:33:03,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:33:03,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:33:03,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:33:03,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:33:03,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:33:03,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 06:33:03,953 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:33:03,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:33:03,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:33:03,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:33:03,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:33:03,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:33:03,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:33:03,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:33:03,959 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:33:03,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:33:03,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:33:03,961 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:33:03,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:33:03,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:33:03,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:33:03,963 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 06:33:03,963 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 06:33:03,963 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 06:33:03,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:33:03,964 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:33:03,964 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:33:03,965 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:33:03,965 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:33:03,965 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:33:03,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:33:03,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:33:03,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:33:03,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:33:03,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:33:03,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:33:03,968 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:33:03,968 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:33:03,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:33:03,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:33:03,969 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae [2021-11-20 06:33:04,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:33:04,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:33:04,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:33:04,507 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:33:04,508 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:33:04,510 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/memsafety/20020406-1.i [2021-11-20 06:33:04,580 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/data/9bbc13348/93360e4755984d7c90d04302646b5bcc/FLAG306115bbb [2021-11-20 06:33:05,305 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:33:05,307 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/sv-benchmarks/c/memsafety/20020406-1.i [2021-11-20 06:33:05,335 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/data/9bbc13348/93360e4755984d7c90d04302646b5bcc/FLAG306115bbb [2021-11-20 06:33:05,492 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/data/9bbc13348/93360e4755984d7c90d04302646b5bcc [2021-11-20 06:33:05,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:33:05,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:33:05,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:33:05,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:33:05,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:33:05,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:05,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19eed96d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:05, skipping insertion in model container [2021-11-20 06:33:05,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:33:05" (1/1) ... [2021-11-20 06:33:05,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:33:05,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:33:06,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:33:06,445 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:33:06,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:33:06,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:33:06,528 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:33:06,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:33:06,691 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:33:06,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06 WrapperNode [2021-11-20 06:33:06,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:33:06,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:33:06,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:33:06,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:33:06,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (1/1) ... [2021-11-20 06:33:06,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (1/1) ... [2021-11-20 06:33:06,815 INFO L137 Inliner]: procedures = 286, calls = 76, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2021-11-20 06:33:06,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:33:06,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:33:06,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:33:06,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:33:06,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (1/1) ... [2021-11-20 06:33:06,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (1/1) ... [2021-11-20 06:33:06,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (1/1) ... [2021-11-20 06:33:06,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (1/1) ... [2021-11-20 06:33:06,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (1/1) ... [2021-11-20 06:33:06,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (1/1) ... [2021-11-20 06:33:06,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (1/1) ... [2021-11-20 06:33:06,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:33:06,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:33:06,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:33:06,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:33:06,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (1/1) ... [2021-11-20 06:33:06,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:33:06,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:33:06,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:33:06,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:33:07,025 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFdeg [2021-11-20 06:33:07,025 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFdeg [2021-11-20 06:33:07,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 06:33:07,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:33:07,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:33:07,026 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFnew [2021-11-20 06:33:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFnew [2021-11-20 06:33:07,026 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFfree [2021-11-20 06:33:07,026 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFfree [2021-11-20 06:33:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFshift_add [2021-11-20 06:33:07,027 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFshift_add [2021-11-20 06:33:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:33:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 06:33:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:33:07,027 INFO L130 BoogieDeclarations]: Found specification of procedure FFmul [2021-11-20 06:33:07,028 INFO L138 BoogieDeclarations]: Found implementation of procedure FFmul [2021-11-20 06:33:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFexgcd [2021-11-20 06:33:07,028 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFexgcd [2021-11-20 06:33:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:33:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:33:07,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:33:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFswap [2021-11-20 06:33:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFswap [2021-11-20 06:33:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFcopy [2021-11-20 06:33:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFcopy [2021-11-20 06:33:07,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:33:07,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:33:07,281 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:33:07,283 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:33:08,295 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:33:08,312 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:33:08,312 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:33:08,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:33:08 BoogieIcfgContainer [2021-11-20 06:33:08,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:33:08,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:33:08,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:33:08,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:33:08,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:33:05" (1/3) ... [2021-11-20 06:33:08,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792f31a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:33:08, skipping insertion in model container [2021-11-20 06:33:08,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:33:06" (2/3) ... [2021-11-20 06:33:08,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792f31a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:33:08, skipping insertion in model container [2021-11-20 06:33:08,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:33:08" (3/3) ... [2021-11-20 06:33:08,326 INFO L111 eAbstractionObserver]: Analyzing ICFG 20020406-1.i [2021-11-20 06:33:08,333 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:33:08,333 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2021-11-20 06:33:08,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:33:08,398 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 [2021-11-20 06:33:08,398 INFO L340 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2021-11-20 06:33:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 90 states have (on average 1.7333333333333334) internal successors, (156), 146 states have internal predecessors, (156), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:33:08,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:08,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:33:08,438 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting DUPFFnewErr0REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:08,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:08,450 INFO L85 PathProgramCache]: Analyzing trace with hash 228226931, now seen corresponding path program 1 times [2021-11-20 06:33:08,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:08,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857785173] [2021-11-20 06:33:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:08,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:08,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:08,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:08,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:33:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:08,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 06:33:08,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:08,705 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 [2021-11-20 06:33:08,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:08,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:08,745 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:08,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857785173] [2021-11-20 06:33:08,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857785173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:08,746 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:08,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:33:08,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613727738] [2021-11-20 06:33:08,749 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:08,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:33:08,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:33:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:33:08,794 INFO L87 Difference]: Start difference. First operand has 187 states, 90 states have (on average 1.7333333333333334) internal successors, (156), 146 states have internal predecessors, (156), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:09,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:09,218 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2021-11-20 06:33:09,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:33:09,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:33:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:09,236 INFO L225 Difference]: With dead ends: 182 [2021-11-20 06:33:09,236 INFO L226 Difference]: Without dead ends: 180 [2021-11-20 06:33:09,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:33:09,243 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 22 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:09,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 344 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:33:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-20 06:33:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-20 06:33:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 139 states have internal predecessors, (146), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:09,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 216 transitions. [2021-11-20 06:33:09,370 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 216 transitions. Word has length 5 [2021-11-20 06:33:09,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:09,373 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 216 transitions. [2021-11-20 06:33:09,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:09,374 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 216 transitions. [2021-11-20 06:33:09,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 06:33:09,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:09,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 06:33:09,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:09,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:09,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting DUPFFnewErr1REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:09,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:09,604 INFO L85 PathProgramCache]: Analyzing trace with hash 228226932, now seen corresponding path program 1 times [2021-11-20 06:33:09,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:09,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906741702] [2021-11-20 06:33:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:09,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:09,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:09,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:09,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:33:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:09,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:33:09,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:09,716 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 [2021-11-20 06:33:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:09,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:09,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:09,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906741702] [2021-11-20 06:33:09,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906741702] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:09,804 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:09,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 06:33:09,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908112765] [2021-11-20 06:33:09,805 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:09,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:33:09,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:09,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:33:09,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:33:09,808 INFO L87 Difference]: Start difference. First operand 180 states and 216 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:10,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:10,708 INFO L93 Difference]: Finished difference Result 183 states and 224 transitions. [2021-11-20 06:33:10,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:33:10,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 06:33:10,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:10,714 INFO L225 Difference]: With dead ends: 183 [2021-11-20 06:33:10,714 INFO L226 Difference]: Without dead ends: 183 [2021-11-20 06:33:10,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:33:10,717 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 22 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:10,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 496 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 06:33:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-20 06:33:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2021-11-20 06:33:10,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 89 states have (on average 1.6404494382022472) internal successors, (146), 139 states have internal predecessors, (146), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 216 transitions. [2021-11-20 06:33:10,761 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 216 transitions. Word has length 5 [2021-11-20 06:33:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:10,761 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 216 transitions. [2021-11-20 06:33:10,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:10,762 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 216 transitions. [2021-11-20 06:33:10,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 06:33:10,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:10,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:10,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:10,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:10,988 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting DUPFFnewErr3REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:10,989 INFO L85 PathProgramCache]: Analyzing trace with hash 282747829, now seen corresponding path program 1 times [2021-11-20 06:33:10,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:10,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882195593] [2021-11-20 06:33:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:10,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:10,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:10,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:10,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:33:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:11,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:33:11,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:11,112 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 [2021-11-20 06:33:11,120 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 [2021-11-20 06:33:11,238 INFO L354 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2021-11-20 06:33:11,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-20 06:33:11,286 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:33:11,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2021-11-20 06:33:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:14,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:15,110 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:15,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882195593] [2021-11-20 06:33:15,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882195593] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:15,110 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:15,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 06:33:15,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053358784] [2021-11-20 06:33:15,111 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:15,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:33:15,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:15,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:33:15,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:33:15,113 INFO L87 Difference]: Start difference. First operand 180 states and 216 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:15,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:15,183 INFO L93 Difference]: Finished difference Result 182 states and 223 transitions. [2021-11-20 06:33:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:33:15,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 06:33:15,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:15,189 INFO L225 Difference]: With dead ends: 182 [2021-11-20 06:33:15,189 INFO L226 Difference]: Without dead ends: 182 [2021-11-20 06:33:15,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:33:15,195 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 11 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:15,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 471 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 90 Unchecked, 0.0s Time] [2021-11-20 06:33:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-20 06:33:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2021-11-20 06:33:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 89 states have (on average 1.6292134831460674) internal successors, (145), 138 states have internal predecessors, (145), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 215 transitions. [2021-11-20 06:33:15,232 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 215 transitions. Word has length 7 [2021-11-20 06:33:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:15,235 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 215 transitions. [2021-11-20 06:33:15,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 215 transitions. [2021-11-20 06:33:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:33:15,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:15,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:15,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-20 06:33:15,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:15,453 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting DUPFFnewErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:15,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:15,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1865414411, now seen corresponding path program 1 times [2021-11-20 06:33:15,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:15,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245159701] [2021-11-20 06:33:15,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:15,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:15,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:15,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:15,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:33:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:15,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:33:15,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:15,607 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 [2021-11-20 06:33:15,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 06:33:15,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-20 06:33:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:15,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:15,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:15,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:15,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245159701] [2021-11-20 06:33:15,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245159701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:15,832 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:15,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:33:15,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536366876] [2021-11-20 06:33:15,833 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:15,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:33:15,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:15,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:33:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:33:15,835 INFO L87 Difference]: Start difference. First operand 179 states and 215 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:16,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:16,969 INFO L93 Difference]: Finished difference Result 190 states and 237 transitions. [2021-11-20 06:33:16,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:33:16,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:33:16,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:16,973 INFO L225 Difference]: With dead ends: 190 [2021-11-20 06:33:16,973 INFO L226 Difference]: Without dead ends: 190 [2021-11-20 06:33:16,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:33:16,975 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 34 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:16,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 811 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 06:33:16,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-20 06:33:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 178. [2021-11-20 06:33:17,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 89 states have (on average 1.6179775280898876) internal successors, (144), 137 states have internal predecessors, (144), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:17,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 214 transitions. [2021-11-20 06:33:17,009 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 214 transitions. Word has length 11 [2021-11-20 06:33:17,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:17,010 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 214 transitions. [2021-11-20 06:33:17,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 214 transitions. [2021-11-20 06:33:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:33:17,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:17,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:17,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:17,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:17,225 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:17,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1993271845, now seen corresponding path program 1 times [2021-11-20 06:33:17,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:17,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836206634] [2021-11-20 06:33:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:17,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:17,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:17,229 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:17,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:33:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:17,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:33:17,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:17,392 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 10 treesize of output 9 [2021-11-20 06:33:17,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-20 06:33:17,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:33:17,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-11-20 06:33:17,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-11-20 06:33:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:17,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:18,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:18,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836206634] [2021-11-20 06:33:18,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836206634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:18,314 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:18,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 11 [2021-11-20 06:33:18,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408429425] [2021-11-20 06:33:18,314 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:18,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:33:18,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:33:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:33:18,316 INFO L87 Difference]: Start difference. First operand 178 states and 214 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:23,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:23,172 INFO L93 Difference]: Finished difference Result 216 states and 262 transitions. [2021-11-20 06:33:23,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:33:23,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 06:33:23,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:23,178 INFO L225 Difference]: With dead ends: 216 [2021-11-20 06:33:23,178 INFO L226 Difference]: Without dead ends: 216 [2021-11-20 06:33:23,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:33:23,180 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 116 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:23,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1497 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-20 06:33:23,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-20 06:33:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 193. [2021-11-20 06:33:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 104 states have (on average 1.5480769230769231) internal successors, (161), 151 states have internal predecessors, (161), 35 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 231 transitions. [2021-11-20 06:33:23,199 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 231 transitions. Word has length 12 [2021-11-20 06:33:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:23,199 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 231 transitions. [2021-11-20 06:33:23,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 231 transitions. [2021-11-20 06:33:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 06:33:23,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:23,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:23,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:23,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:23,426 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting DUPFFnewErr9REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:23,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash 656353794, now seen corresponding path program 1 times [2021-11-20 06:33:23,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:23,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560860842] [2021-11-20 06:33:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:23,427 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:23,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:23,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:23,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:33:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:23,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:33:23,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:23,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:23,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:23,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560860842] [2021-11-20 06:33:23,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560860842] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:23,754 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:23,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 06:33:23,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558601677] [2021-11-20 06:33:23,754 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:23,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:33:23,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:23,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:33:23,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:33:23,756 INFO L87 Difference]: Start difference. First operand 193 states and 231 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:24,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:24,243 INFO L93 Difference]: Finished difference Result 230 states and 271 transitions. [2021-11-20 06:33:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:33:24,244 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-20 06:33:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:24,248 INFO L225 Difference]: With dead ends: 230 [2021-11-20 06:33:24,248 INFO L226 Difference]: Without dead ends: 230 [2021-11-20 06:33:24,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:33:24,250 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 130 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:24,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1084 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 06:33:24,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-20 06:33:24,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 214. [2021-11-20 06:33:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 124 states have (on average 1.4919354838709677) internal successors, (185), 171 states have internal predecessors, (185), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 255 transitions. [2021-11-20 06:33:24,267 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 255 transitions. Word has length 15 [2021-11-20 06:33:24,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:24,267 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 255 transitions. [2021-11-20 06:33:24,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 255 transitions. [2021-11-20 06:33:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:33:24,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:24,269 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:24,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:24,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:24,490 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting DUPFFnewErr9REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:24,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash -606169534, now seen corresponding path program 1 times [2021-11-20 06:33:24,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:24,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818051591] [2021-11-20 06:33:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:24,492 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:24,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:24,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:24,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:33:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:24,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:33:24,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:24,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:25,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:25,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818051591] [2021-11-20 06:33:25,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818051591] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:33:25,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:33:25,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-11-20 06:33:25,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693357079] [2021-11-20 06:33:25,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:33:25,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:33:25,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:25,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:33:25,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:33:25,014 INFO L87 Difference]: Start difference. First operand 214 states and 255 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:25,998 INFO L93 Difference]: Finished difference Result 227 states and 264 transitions. [2021-11-20 06:33:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:33:25,999 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 06:33:25,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:26,002 INFO L225 Difference]: With dead ends: 227 [2021-11-20 06:33:26,002 INFO L226 Difference]: Without dead ends: 227 [2021-11-20 06:33:26,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2021-11-20 06:33:26,004 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 92 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:26,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 1820 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 06:33:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-20 06:33:26,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2021-11-20 06:33:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 130 states have (on average 1.4692307692307693) internal successors, (191), 177 states have internal predecessors, (191), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 261 transitions. [2021-11-20 06:33:26,020 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 261 transitions. Word has length 17 [2021-11-20 06:33:26,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:26,020 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 261 transitions. [2021-11-20 06:33:26,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:26,021 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 261 transitions. [2021-11-20 06:33:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-20 06:33:26,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:26,022 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:26,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-20 06:33:26,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:26,237 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting DUPFFnewErr9REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:26,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1859961150, now seen corresponding path program 2 times [2021-11-20 06:33:26,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:26,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704664497] [2021-11-20 06:33:26,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:33:26,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:26,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:26,242 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:26,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:33:26,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 06:33:26,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:33:26,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:33:26,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 06:33:26,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:26,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-20 06:33:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 06:33:26,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:26,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704664497] [2021-11-20 06:33:26,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704664497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:26,928 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:26,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 06:33:26,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827484196] [2021-11-20 06:33:26,928 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:26,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:33:26,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:26,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:33:26,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:33:26,930 INFO L87 Difference]: Start difference. First operand 220 states and 261 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:27,753 INFO L93 Difference]: Finished difference Result 218 states and 255 transitions. [2021-11-20 06:33:27,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:33:27,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-20 06:33:27,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:27,761 INFO L225 Difference]: With dead ends: 218 [2021-11-20 06:33:27,761 INFO L226 Difference]: Without dead ends: 218 [2021-11-20 06:33:27,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:33:27,762 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 15 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:27,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 869 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:33:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-20 06:33:27,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2021-11-20 06:33:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 126 states have (on average 1.4365079365079365) internal successors, (181), 171 states have internal predecessors, (181), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 251 transitions. [2021-11-20 06:33:27,790 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 251 transitions. Word has length 21 [2021-11-20 06:33:27,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:27,792 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 251 transitions. [2021-11-20 06:33:27,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:33:27,792 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 251 transitions. [2021-11-20 06:33:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 06:33:27,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:27,796 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:27,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-20 06:33:28,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:28,011 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:28,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:28,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1807098443, now seen corresponding path program 1 times [2021-11-20 06:33:28,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:28,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015487185] [2021-11-20 06:33:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:28,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:28,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:28,013 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:28,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 06:33:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:28,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:33:28,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:28,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:33:29,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:29,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015487185] [2021-11-20 06:33:29,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015487185] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:33:29,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:33:29,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-11-20 06:33:29,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25983794] [2021-11-20 06:33:29,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:33:29,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 06:33:29,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 06:33:29,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-11-20 06:33:29,447 INFO L87 Difference]: Start difference. First operand 214 states and 251 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:33:32,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:32,136 INFO L93 Difference]: Finished difference Result 322 states and 394 transitions. [2021-11-20 06:33:32,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 06:33:32,138 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-11-20 06:33:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:32,142 INFO L225 Difference]: With dead ends: 322 [2021-11-20 06:33:32,142 INFO L226 Difference]: Without dead ends: 286 [2021-11-20 06:33:32,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=545, Invalid=1617, Unknown=0, NotChecked=0, Total=2162 [2021-11-20 06:33:32,144 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 242 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:32,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 2307 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 06:33:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-20 06:33:32,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 220. [2021-11-20 06:33:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 132 states have (on average 1.4166666666666667) internal successors, (187), 177 states have internal predecessors, (187), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 257 transitions. [2021-11-20 06:33:32,165 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 257 transitions. Word has length 27 [2021-11-20 06:33:32,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:32,166 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 257 transitions. [2021-11-20 06:33:32,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:33:32,167 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 257 transitions. [2021-11-20 06:33:32,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:33:32,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:32,168 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:32,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-20 06:33:32,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:32,382 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:32,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:32,383 INFO L85 PathProgramCache]: Analyzing trace with hash 168356341, now seen corresponding path program 2 times [2021-11-20 06:33:32,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:32,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115880819] [2021-11-20 06:33:32,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:33:32,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:32,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:32,386 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:32,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 06:33:32,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 06:33:32,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:33:32,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:33:32,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:32,608 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-20 06:33:32,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-20 06:33:32,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:32,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115880819] [2021-11-20 06:33:32,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115880819] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:32,742 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:32,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:33:32,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269963094] [2021-11-20 06:33:32,743 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:32,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:33:32,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:32,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:33:32,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:33:32,746 INFO L87 Difference]: Start difference. First operand 220 states and 257 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:33:33,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:33,469 INFO L93 Difference]: Finished difference Result 218 states and 255 transitions. [2021-11-20 06:33:33,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:33:33,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-20 06:33:33,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:33,486 INFO L225 Difference]: With dead ends: 218 [2021-11-20 06:33:33,486 INFO L226 Difference]: Without dead ends: 218 [2021-11-20 06:33:33,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:33:33,488 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 21 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:33,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 753 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 06:33:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-20 06:33:33,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-11-20 06:33:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 132 states have (on average 1.4015151515151516) internal successors, (185), 175 states have internal predecessors, (185), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:33,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 255 transitions. [2021-11-20 06:33:33,500 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 255 transitions. Word has length 29 [2021-11-20 06:33:33,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:33,501 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 255 transitions. [2021-11-20 06:33:33,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:33:33,501 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 255 transitions. [2021-11-20 06:33:33,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 06:33:33,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:33,503 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:33,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:33,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:33,718 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:33,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash 168356342, now seen corresponding path program 1 times [2021-11-20 06:33:33,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:33,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794463859] [2021-11-20 06:33:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:33,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:33,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:33,722 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:33,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 06:33:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:33,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:33:33,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-20 06:33:34,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:33:34,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 06:33:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-20 06:33:34,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:33:34,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794463859] [2021-11-20 06:33:34,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794463859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:33:34,967 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:33:34,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-20 06:33:34,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501706937] [2021-11-20 06:33:34,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:33:34,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:33:34,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:33:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:33:34,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:33:34,969 INFO L87 Difference]: Start difference. First operand 218 states and 255 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:33:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:33:36,161 INFO L93 Difference]: Finished difference Result 216 states and 253 transitions. [2021-11-20 06:33:36,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:33:36,163 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2021-11-20 06:33:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:33:36,166 INFO L225 Difference]: With dead ends: 216 [2021-11-20 06:33:36,166 INFO L226 Difference]: Without dead ends: 216 [2021-11-20 06:33:36,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:33:36,167 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 48 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:33:36,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 955 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 06:33:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-20 06:33:36,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-11-20 06:33:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 173 states have internal predecessors, (183), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:33:36,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 253 transitions. [2021-11-20 06:33:36,179 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 253 transitions. Word has length 29 [2021-11-20 06:33:36,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:33:36,180 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 253 transitions. [2021-11-20 06:33:36,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:33:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 253 transitions. [2021-11-20 06:33:36,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 06:33:36,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:33:36,182 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:33:36,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:33:36,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:33:36,396 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:33:36,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:33:36,397 INFO L85 PathProgramCache]: Analyzing trace with hash 924079462, now seen corresponding path program 1 times [2021-11-20 06:33:36,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:33:36,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21510737] [2021-11-20 06:33:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:33:36,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:33:36,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:33:36,409 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:33:36,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 06:33:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:33:36,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 06:33:36,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:33:36,681 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 [2021-11-20 06:33:36,715 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:33:36,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-20 06:33:36,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-20 06:33:37,125 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-20 06:33:37,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 37 [2021-11-20 06:33:37,333 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:33:37,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-20 06:33:37,514 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:33:37,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-20 06:33:37,683 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:33:37,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-20 06:33:37,877 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:33:37,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-20 06:33:38,694 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:33:38,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 49 [2021-11-20 06:33:39,439 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:33:39,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 50 [2021-11-20 06:33:39,589 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:33:39,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 49 [2021-11-20 06:33:40,112 INFO L354 Elim1Store]: treesize reduction 793, result has 3.4 percent of original size [2021-11-20 06:33:40,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 106 treesize of output 52 [2021-11-20 06:33:40,367 INFO L354 Elim1Store]: treesize reduction 829, result has 3.3 percent of original size [2021-11-20 06:33:40,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 113 treesize of output 55 [2021-11-20 06:33:40,971 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-20 06:33:40,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 59 [2021-11-20 06:33:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 06:33:41,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:34:38,991 WARN L227 SmtUtils]: Spent 57.80s on a formula simplification that was a NOOP. DAG size: 130 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:34:45,130 WARN L227 SmtUtils]: Spent 6.13s on a formula simplification that was a NOOP. DAG size: 91 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:34:54,188 WARN L227 SmtUtils]: Spent 9.06s on a formula simplification that was a NOOP. DAG size: 95 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:34:59,700 WARN L227 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 95 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:35:06,749 WARN L838 $PredicateComparison]: unable to prove that (forall ((|DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1| (_ BitVec 32)) (|v_DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1_109| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.base|) (bvadd |DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1_109| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_DUPFFnew_~ans~0#1.base|) (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|)))))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 06:35:46,757 WARN L838 $PredicateComparison]: unable to prove that (forall ((|DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1| (_ BitVec 32)) (|v_DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1_119| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.base|) (bvadd |DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1_119| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_DUPFFnew_~ans~0#1.base|) (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|)))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 06:36:05,603 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 8 times theorem prover too weak. 4 trivial. 15 not checked. [2021-11-20 06:36:05,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:36:05,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21510737] [2021-11-20 06:36:05,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21510737] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:36:05,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:36:05,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 26 [2021-11-20 06:36:05,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010886313] [2021-11-20 06:36:05,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:36:05,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 06:36:05,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:36:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 06:36:05,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=496, Unknown=14, NotChecked=94, Total=702 [2021-11-20 06:36:05,606 INFO L87 Difference]: Start difference. First operand 216 states and 253 transitions. Second operand has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:36:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:36:10,335 INFO L93 Difference]: Finished difference Result 232 states and 276 transitions. [2021-11-20 06:36:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:36:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2021-11-20 06:36:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:36:10,339 INFO L225 Difference]: With dead ends: 232 [2021-11-20 06:36:10,340 INFO L226 Difference]: Without dead ends: 232 [2021-11-20 06:36:10,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 14 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 70.2s TimeCoverageRelationStatistics Valid=98, Invalid=496, Unknown=14, NotChecked=94, Total=702 [2021-11-20 06:36:10,353 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 11 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 522 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:36:10,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2790 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 522 Unchecked, 0.5s Time] [2021-11-20 06:36:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-20 06:36:10,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 215. [2021-11-20 06:36:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 132 states have (on average 1.378787878787879) internal successors, (182), 172 states have internal predecessors, (182), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:36:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 252 transitions. [2021-11-20 06:36:10,367 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 252 transitions. Word has length 30 [2021-11-20 06:36:10,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:36:10,367 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 252 transitions. [2021-11-20 06:36:10,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 25 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:36:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 252 transitions. [2021-11-20 06:36:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-20 06:36:10,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:36:10,369 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:36:10,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:36:10,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:36:10,585 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:36:10,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:36:10,586 INFO L85 PathProgramCache]: Analyzing trace with hash 924079463, now seen corresponding path program 1 times [2021-11-20 06:36:10,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:36:10,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [431335993] [2021-11-20 06:36:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:36:10,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:36:10,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:36:10,589 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:36:10,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 06:36:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:36:10,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-20 06:36:10,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:36:10,848 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 [2021-11-20 06:36:10,890 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 10 treesize of output 9 [2021-11-20 06:36:10,919 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:36:10,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-20 06:36:10,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:36:10,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-20 06:36:11,352 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-20 06:36:11,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 71 [2021-11-20 06:36:11,388 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-20 06:36:11,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 55 [2021-11-20 06:36:11,659 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-20 06:36:11,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-20 06:36:14,546 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:36:14,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-20 06:36:17,154 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-20 06:36:17,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-20 06:36:17,204 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:36:17,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-20 06:36:19,760 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-20 06:36:19,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-20 06:36:21,274 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:36:21,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-20 06:36:21,445 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-20 06:36:21,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-20 06:36:21,486 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:36:21,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-20 06:36:22,994 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-20 06:36:22,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-20 06:36:24,871 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:36:24,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-20 06:36:25,036 INFO L354 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2021-11-20 06:36:25,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 69 [2021-11-20 06:36:29,856 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:36:29,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 65 [2021-11-20 06:36:30,949 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:36:30,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 82 [2021-11-20 06:36:34,325 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-20 06:36:34,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 105 [2021-11-20 06:36:37,276 INFO L354 Elim1Store]: treesize reduction 793, result has 3.4 percent of original size [2021-11-20 06:36:37,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 195 treesize of output 129 [2021-11-20 06:36:37,504 INFO L354 Elim1Store]: treesize reduction 1021, result has 3.8 percent of original size [2021-11-20 06:36:37,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 147 treesize of output 108 [2021-11-20 06:36:37,980 INFO L354 Elim1Store]: treesize reduction 829, result has 3.3 percent of original size [2021-11-20 06:36:37,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 203 treesize of output 133 [2021-11-20 06:36:38,227 INFO L354 Elim1Store]: treesize reduction 1057, result has 3.6 percent of original size [2021-11-20 06:36:38,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 151 treesize of output 108 [2021-11-20 06:36:39,274 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-20 06:36:39,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 62 [2021-11-20 06:36:39,286 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-20 06:36:39,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2021-11-20 06:36:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 06:36:39,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:38:48,653 WARN L227 SmtUtils]: Spent 2.15m on a formula simplification that was a NOOP. DAG size: 212 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:39:28,195 WARN L227 SmtUtils]: Spent 39.54s on a formula simplification that was a NOOP. DAG size: 138 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:40:20,480 WARN L227 SmtUtils]: Spent 52.28s on a formula simplification that was a NOOP. DAG size: 143 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:41:12,752 WARN L227 SmtUtils]: Spent 52.27s on a formula simplification that was a NOOP. DAG size: 143 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:42:05,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2021-11-20 06:42:05,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-11-20 06:42:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 7 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 06:42:05,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:05,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [431335993] [2021-11-20 06:42:05,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [431335993] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:05,477 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:42:05,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-11-20 06:42:05,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427993137] [2021-11-20 06:42:05,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:05,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 06:42:05,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:05,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 06:42:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=470, Unknown=6, NotChecked=0, Total=552 [2021-11-20 06:42:05,480 INFO L87 Difference]: Start difference. First operand 215 states and 252 transitions. Second operand has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:10,221 INFO L93 Difference]: Finished difference Result 233 states and 278 transitions. [2021-11-20 06:42:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:42:10,223 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2021-11-20 06:42:10,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:10,225 INFO L225 Difference]: With dead ends: 233 [2021-11-20 06:42:10,225 INFO L226 Difference]: Without dead ends: 233 [2021-11-20 06:42:10,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 14 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=103, Invalid=593, Unknown=6, NotChecked=0, Total=702 [2021-11-20 06:42:10,227 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 32 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:10,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 1707 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 343 Invalid, 0 Unknown, 311 Unchecked, 2.4s Time] [2021-11-20 06:42:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-20 06:42:10,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 214. [2021-11-20 06:42:10,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 132 states have (on average 1.371212121212121) internal successors, (181), 171 states have internal predecessors, (181), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:42:10,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 251 transitions. [2021-11-20 06:42:10,239 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 251 transitions. Word has length 30 [2021-11-20 06:42:10,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:10,240 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 251 transitions. [2021-11-20 06:42:10,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 22 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:10,241 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 251 transitions. [2021-11-20 06:42:10,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 06:42:10,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:10,242 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:10,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:10,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:10,453 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:42:10,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:10,454 INFO L85 PathProgramCache]: Analyzing trace with hash -234543286, now seen corresponding path program 1 times [2021-11-20 06:42:10,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:10,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041871201] [2021-11-20 06:42:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:10,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:10,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:10,456 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:10,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 06:42:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:10,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:42:10,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-20 06:42:10,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:10,947 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-20 06:42:10,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:10,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041871201] [2021-11-20 06:42:10,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041871201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:10,948 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:10,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 06:42:10,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143060549] [2021-11-20 06:42:10,948 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:10,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:42:10,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:10,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:42:10,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:42:10,950 INFO L87 Difference]: Start difference. First operand 214 states and 251 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:42:11,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:11,201 INFO L93 Difference]: Finished difference Result 224 states and 263 transitions. [2021-11-20 06:42:11,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:42:11,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-11-20 06:42:11,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:11,204 INFO L225 Difference]: With dead ends: 224 [2021-11-20 06:42:11,204 INFO L226 Difference]: Without dead ends: 219 [2021-11-20 06:42:11,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:42:11,206 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 41 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:11,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 741 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:42:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-11-20 06:42:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 214. [2021-11-20 06:42:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 132 states have (on average 1.3636363636363635) internal successors, (180), 171 states have internal predecessors, (180), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:42:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2021-11-20 06:42:11,217 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 250 transitions. Word has length 43 [2021-11-20 06:42:11,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:11,218 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 250 transitions. [2021-11-20 06:42:11,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:42:11,218 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 250 transitions. [2021-11-20 06:42:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 06:42:11,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:11,221 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:11,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:11,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:11,437 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:42:11,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:11,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1962448218, now seen corresponding path program 1 times [2021-11-20 06:42:11,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:11,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865944170] [2021-11-20 06:42:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:11,439 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:11,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:11,440 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:11,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 06:42:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:11,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:42:11,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:12,407 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 86 proven. 28 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-20 06:42:12,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 86 proven. 28 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-20 06:42:13,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:13,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865944170] [2021-11-20 06:42:13,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865944170] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:13,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:42:13,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-11-20 06:42:13,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650224051] [2021-11-20 06:42:13,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:13,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 06:42:13,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:13,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 06:42:13,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-11-20 06:42:13,819 INFO L87 Difference]: Start difference. First operand 214 states and 250 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:42:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:20,191 INFO L93 Difference]: Finished difference Result 302 states and 383 transitions. [2021-11-20 06:42:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 06:42:20,193 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-11-20 06:42:20,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:20,196 INFO L225 Difference]: With dead ends: 302 [2021-11-20 06:42:20,197 INFO L226 Difference]: Without dead ends: 290 [2021-11-20 06:42:20,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=781, Invalid=2189, Unknown=0, NotChecked=0, Total=2970 [2021-11-20 06:42:20,199 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 301 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:20,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 3041 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-20 06:42:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-20 06:42:20,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 219. [2021-11-20 06:42:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 137 states have (on average 1.3503649635036497) internal successors, (185), 176 states have internal predecessors, (185), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:42:20,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 255 transitions. [2021-11-20 06:42:20,220 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 255 transitions. Word has length 58 [2021-11-20 06:42:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:20,222 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 255 transitions. [2021-11-20 06:42:20,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 24 states have internal predecessors, (69), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:42:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 255 transitions. [2021-11-20 06:42:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-20 06:42:20,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:20,230 INFO L514 BasicCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:20,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:20,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:20,447 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:42:20,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:20,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2097093162, now seen corresponding path program 2 times [2021-11-20 06:42:20,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:20,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033603979] [2021-11-20 06:42:20,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:42:20,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:20,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:20,452 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:20,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 06:42:20,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 06:42:20,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:42:20,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:42:20,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-20 06:42:20,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-20 06:42:21,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:21,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033603979] [2021-11-20 06:42:21,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033603979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:21,165 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:21,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 06:42:21,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463995918] [2021-11-20 06:42:21,165 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:21,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:42:21,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:21,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:42:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:42:21,166 INFO L87 Difference]: Start difference. First operand 219 states and 255 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:22,233 INFO L93 Difference]: Finished difference Result 217 states and 253 transitions. [2021-11-20 06:42:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:42:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2021-11-20 06:42:22,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:22,235 INFO L225 Difference]: With dead ends: 217 [2021-11-20 06:42:22,235 INFO L226 Difference]: Without dead ends: 217 [2021-11-20 06:42:22,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:42:22,237 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 12 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:22,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 734 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 06:42:22,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-20 06:42:22,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2021-11-20 06:42:22,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 137 states have (on average 1.3357664233576643) internal successors, (183), 174 states have internal predecessors, (183), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:42:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 253 transitions. [2021-11-20 06:42:22,248 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 253 transitions. Word has length 63 [2021-11-20 06:42:22,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:22,249 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 253 transitions. [2021-11-20 06:42:22,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 06:42:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 253 transitions. [2021-11-20 06:42:22,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-20 06:42:22,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:22,251 INFO L514 BasicCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:22,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:22,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:22,465 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:42:22,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:22,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2097093161, now seen corresponding path program 1 times [2021-11-20 06:42:22,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:22,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [147652283] [2021-11-20 06:42:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:22,467 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:22,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:22,468 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:22,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 06:42:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:22,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:42:22,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:23,398 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-20 06:42:23,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:24,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 06:42:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-20 06:42:24,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:42:24,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [147652283] [2021-11-20 06:42:24,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [147652283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:24,507 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:24,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-20 06:42:24,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656377720] [2021-11-20 06:42:24,507 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:24,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 06:42:24,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:42:24,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 06:42:24,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:42:24,509 INFO L87 Difference]: Start difference. First operand 217 states and 253 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:42:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:26,502 INFO L93 Difference]: Finished difference Result 215 states and 251 transitions. [2021-11-20 06:42:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:42:26,504 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 63 [2021-11-20 06:42:26,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:42:26,505 INFO L225 Difference]: With dead ends: 215 [2021-11-20 06:42:26,505 INFO L226 Difference]: Without dead ends: 215 [2021-11-20 06:42:26,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:42:26,506 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 27 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:42:26,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1235 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 06:42:26,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-20 06:42:26,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2021-11-20 06:42:26,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 137 states have (on average 1.3211678832116789) internal successors, (181), 172 states have internal predecessors, (181), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:42:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 251 transitions. [2021-11-20 06:42:26,517 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 251 transitions. Word has length 63 [2021-11-20 06:42:26,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:42:26,517 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 251 transitions. [2021-11-20 06:42:26,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:42:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 251 transitions. [2021-11-20 06:42:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 06:42:26,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:42:26,519 INFO L514 BasicCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:26,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:26,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:42:26,732 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:42:26,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:26,733 INFO L85 PathProgramCache]: Analyzing trace with hash -585378383, now seen corresponding path program 1 times [2021-11-20 06:42:26,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:42:26,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228829105] [2021-11-20 06:42:26,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:26,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:42:26,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:42:26,735 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:42:26,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 06:42:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:27,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 06:42:27,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:27,352 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 [2021-11-20 06:42:27,473 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 06:42:27,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-20 06:42:27,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-20 06:42:28,121 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-20 06:42:28,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2021-11-20 06:42:32,337 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:42:32,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 06:42:33,309 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:42:33,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 06:42:33,468 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:42:33,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 06:42:33,618 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:42:33,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 06:42:33,765 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:42:33,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 06:42:33,966 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:42:33,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 06:42:34,179 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:42:34,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 06:42:34,392 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:42:34,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 06:42:35,944 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-20 06:42:35,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 06:42:42,894 WARN L227 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 18 DAG size of output: 13 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 06:42:42,894 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-11-20 06:42:42,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 38 [2021-11-20 06:42:43,787 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:42:43,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 52 [2021-11-20 06:42:44,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,302 INFO L354 Elim1Store]: treesize reduction 478, result has 3.8 percent of original size [2021-11-20 06:42:44,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 110 treesize of output 56 [2021-11-20 06:42:44,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:42:44,622 INFO L354 Elim1Store]: treesize reduction 490, result has 3.7 percent of original size [2021-11-20 06:42:44,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 113 treesize of output 55 [2021-11-20 06:42:45,283 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-11-20 06:42:45,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 74 [2021-11-20 06:42:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 142 proven. 12 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-20 06:42:45,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:44:21,720 WARN L227 SmtUtils]: Spent 1.60m on a formula simplification that was a NOOP. DAG size: 159 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:44:36,949 WARN L227 SmtUtils]: Spent 15.23s on a formula simplification that was a NOOP. DAG size: 103 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:45:01,269 WARN L227 SmtUtils]: Spent 24.32s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:45:18,280 WARN L227 SmtUtils]: Spent 17.01s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-20 06:45:20,696 WARN L838 $PredicateComparison]: unable to prove that (forall ((|DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1| (_ BitVec 32))) (= (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_$Pointer$.base| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.base|) (bvadd |DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_DUPFFnew_~ans~0#1.base|) (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|))))))))))))) (_ bv1 1)) (_ bv0 1))) is different from false [2021-11-20 06:45:22,719 WARN L838 $PredicateComparison]: unable to prove that (forall ((|DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1| (_ BitVec 32)) (|v_DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1_345| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.base|) (bvadd |DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_DUPFFnew_#Ultimate.C_memset_#t~loopctr71#1_345| |c_DUPFFnew_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |c_DUPFFnew_~ans~0#1.base|) (bvadd (_ bv8 32) |c_DUPFFnew_~ans~0#1.offset|)))))))))))))) (_ bv1 1)))) is different from false [2021-11-20 06:46:36,715 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 135 proven. 10 refuted. 23 times theorem prover too weak. 55 trivial. 23 not checked. [2021-11-20 06:46:36,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:46:36,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228829105] [2021-11-20 06:46:36,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228829105] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:46:36,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:46:36,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 26 [2021-11-20 06:46:36,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300715466] [2021-11-20 06:46:36,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:46:36,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 06:46:36,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:46:36,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 06:46:36,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=496, Unknown=14, NotChecked=94, Total=702 [2021-11-20 06:46:36,719 INFO L87 Difference]: Start difference. First operand 215 states and 251 transitions. Second operand has 27 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:46:41,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:46:41,600 INFO L93 Difference]: Finished difference Result 226 states and 269 transitions. [2021-11-20 06:46:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:46:41,601 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 64 [2021-11-20 06:46:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:46:41,603 INFO L225 Difference]: With dead ends: 226 [2021-11-20 06:46:41,603 INFO L226 Difference]: Without dead ends: 226 [2021-11-20 06:46:41,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 81 SyntacticMatches, 22 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 82.6s TimeCoverageRelationStatistics Valid=98, Invalid=496, Unknown=14, NotChecked=94, Total=702 [2021-11-20 06:46:41,605 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 10 mSDsluCounter, 1822 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 322 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:46:41,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2012 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 322 Unchecked, 0.7s Time] [2021-11-20 06:46:41,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-20 06:46:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 214. [2021-11-20 06:46:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 137 states have (on average 1.313868613138686) internal successors, (180), 171 states have internal predecessors, (180), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-11-20 06:46:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2021-11-20 06:46:41,616 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 250 transitions. Word has length 64 [2021-11-20 06:46:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:46:41,616 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 250 transitions. [2021-11-20 06:46:41,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.6923076923076925) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 06:46:41,617 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 250 transitions. [2021-11-20 06:46:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 06:46:41,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:46:41,618 INFO L514 BasicCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:46:41,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:46:41,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:46:41,833 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [DUPFFnewErr0REQUIRES_VIOLATION, DUPFFnewErr1REQUIRES_VIOLATION, DUPFFnewErr2REQUIRES_VIOLATION, DUPFFnewErr3REQUIRES_VIOLATION (and 51 more)] === [2021-11-20 06:46:41,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:46:41,834 INFO L85 PathProgramCache]: Analyzing trace with hash -585378382, now seen corresponding path program 1 times [2021-11-20 06:46:41,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:46:41,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312176675] [2021-11-20 06:46:41,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:46:41,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:46:41,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:46:41,836 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:46:41,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ee8acd7-a96d-4c07-a672-0496f726596d/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 06:46:42,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:46:42,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-20 06:46:42,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:46:42,415 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 [2021-11-20 06:46:42,483 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 10 treesize of output 9 [2021-11-20 06:46:42,514 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 06:46:42,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-20 06:46:42,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-20 06:46:42,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-20 06:46:43,025 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-20 06:46:43,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 71 [2021-11-20 06:46:43,068 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-20 06:46:43,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 55 [2021-11-20 06:46:45,974 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-20 06:46:45,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 94 [2021-11-20 06:46:46,075 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:46:46,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 78 [2021-11-20 06:46:48,910 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-20 06:46:48,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 94 [2021-11-20 06:46:49,557 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:46:49,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 78 [2021-11-20 06:46:49,783 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-20 06:46:49,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 94 [2021-11-20 06:46:50,742 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:46:50,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 78 [2021-11-20 06:46:51,002 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-20 06:46:51,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 94 [2021-11-20 06:46:51,092 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:46:51,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 78 [2021-11-20 06:46:52,306 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-20 06:46:52,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 94 [2021-11-20 06:46:54,224 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:46:54,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 78 [2021-11-20 06:46:58,149 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-20 06:46:58,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 94 [2021-11-20 06:46:58,239 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:46:58,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 78 [2021-11-20 06:47:00,732 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-20 06:47:00,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 94 [2021-11-20 06:47:03,041 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-20 06:47:03,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 78