./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.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_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/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_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/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_6f1dfb76-d879-4396-9d8e-11dfc2494f73/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 b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:47:07,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:47:07,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:47:07,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:47:07,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:47:07,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:47:07,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:47:07,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:47:07,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:47:07,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:47:07,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:47:07,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:47:07,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:47:07,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:47:07,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:47:07,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:47:07,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:47:07,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:47:07,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:47:07,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:47:07,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:47:07,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:47:07,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:47:07,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:47:07,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:47:07,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:47:07,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:47:07,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:47:07,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:47:07,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:47:07,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:47:07,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:47:07,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:47:07,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:47:07,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:47:07,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:47:07,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:47:07,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:47:07,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:47:07,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:47:07,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:47:07,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:47:07,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:47:07,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:47:07,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:47:07,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:47:07,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:47:07,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:47:07,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:47:07,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:47:07,718 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:47:07,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:47:07,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:47:07,719 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:47:07,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:47:07,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:47:07,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:47:07,719 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:47:07,720 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:47:07,720 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:47:07,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:47:07,720 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:47:07,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:47:07,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:47:07,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:47:07,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:47:07,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:47:07,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:47:07,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:47:07,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:47:07,722 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:47:07,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:47:07,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:47:07,723 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_6f1dfb76-d879-4396-9d8e-11dfc2494f73/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2021-11-20 05:47:07,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:47:07,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:47:07,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:47:07,962 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:47:07,962 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:47:07,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-11-20 05:47:08,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/data/ff58fc89f/3a57f7a3d5fb4b0e9e640c7031832513/FLAG3f81a7ce1 [2021-11-20 05:47:08,666 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:47:08,667 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-11-20 05:47:08,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/data/ff58fc89f/3a57f7a3d5fb4b0e9e640c7031832513/FLAG3f81a7ce1 [2021-11-20 05:47:08,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/data/ff58fc89f/3a57f7a3d5fb4b0e9e640c7031832513 [2021-11-20 05:47:08,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:47:08,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:47:08,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:47:08,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:47:08,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:47:08,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:08" (1/1) ... [2021-11-20 05:47:08,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35827e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:08, skipping insertion in model container [2021-11-20 05:47:08,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:08" (1/1) ... [2021-11-20 05:47:08,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:47:08,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:47:09,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:47:09,548 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 05:47:09,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@60bdd8ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:09, skipping insertion in model container [2021-11-20 05:47:09,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:47:09,549 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 05:47:09,553 INFO L158 Benchmark]: Toolchain (without parser) took 632.81ms. Allocated memory is still 113.2MB. Free memory was 84.8MB in the beginning and 71.3MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 05:47:09,554 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 86.0MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:47:09,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.33ms. Allocated memory is still 113.2MB. Free memory was 84.6MB in the beginning and 71.3MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 05:47:09,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 86.0MB. Free memory was 53.8MB in the beginning and 53.8MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 630.33ms. Allocated memory is still 113.2MB. Free memory was 84.6MB in the beginning and 71.3MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/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_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/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_6f1dfb76-d879-4396-9d8e-11dfc2494f73/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 b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:47:11,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:47:11,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:47:11,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:47:11,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:47:11,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:47:11,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:47:11,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:47:11,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:47:11,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:47:11,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:47:11,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:47:11,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:47:11,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:47:11,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:47:11,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:47:11,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:47:11,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:47:11,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:47:11,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:47:11,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:47:11,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:47:11,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:47:11,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:47:11,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:47:11,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:47:11,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:47:11,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:47:11,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:47:11,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:47:11,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:47:11,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:47:11,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:47:11,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:47:11,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:47:11,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:47:11,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:47:11,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:47:11,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:47:11,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:47:11,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:47:11,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:47:11,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:47:11,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:47:11,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:47:11,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:47:11,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:47:11,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:47:12,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:47:12,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:47:12,001 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:47:12,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:47:12,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:47:12,003 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:47:12,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:47:12,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:47:12,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:47:12,005 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:47:12,005 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:47:12,005 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:47:12,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:47:12,006 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:47:12,006 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:47:12,006 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:47:12,006 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:47:12,007 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:47:12,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:47:12,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:47:12,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:47:12,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:47:12,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:47:12,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:47:12,009 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:47:12,009 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:47:12,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:47:12,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:47:12,010 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_6f1dfb76-d879-4396-9d8e-11dfc2494f73/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2021-11-20 05:47:12,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:47:12,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:47:12,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:47:12,451 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:47:12,452 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:47:12,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-11-20 05:47:12,512 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/data/3a5d6a2cd/bc82d805a24e47eeb6b69a9f85e0155c/FLAG49ee6ccb4 [2021-11-20 05:47:13,149 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:47:13,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-11-20 05:47:13,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/data/3a5d6a2cd/bc82d805a24e47eeb6b69a9f85e0155c/FLAG49ee6ccb4 [2021-11-20 05:47:13,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/data/3a5d6a2cd/bc82d805a24e47eeb6b69a9f85e0155c [2021-11-20 05:47:13,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:47:13,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:47:13,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:47:13,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:47:13,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:47:13,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:13" (1/1) ... [2021-11-20 05:47:13,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b2beee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:13, skipping insertion in model container [2021-11-20 05:47:13,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:47:13" (1/1) ... [2021-11-20 05:47:13,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:47:13,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:47:13,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:47:13,977 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 05:47:13,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:47:14,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:47:14,060 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:47:14,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:47:14,173 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:47:14,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14 WrapperNode [2021-11-20 05:47:14,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:47:14,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:47:14,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:47:14,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:47:14,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (1/1) ... [2021-11-20 05:47:14,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (1/1) ... [2021-11-20 05:47:14,243 INFO L137 Inliner]: procedures = 167, calls = 78, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 85 [2021-11-20 05:47:14,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:47:14,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:47:14,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:47:14,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:47:14,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (1/1) ... [2021-11-20 05:47:14,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (1/1) ... [2021-11-20 05:47:14,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (1/1) ... [2021-11-20 05:47:14,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (1/1) ... [2021-11-20 05:47:14,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (1/1) ... [2021-11-20 05:47:14,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (1/1) ... [2021-11-20 05:47:14,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (1/1) ... [2021-11-20 05:47:14,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:47:14,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:47:14,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:47:14,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:47:14,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (1/1) ... [2021-11-20 05:47:14,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:47:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:47:14,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:47:14,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:47:14,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 05:47:14,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 05:47:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:47:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:47:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:47:14,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:47:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:47:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:47:14,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:47:14,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:47:14,522 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:47:14,524 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:47:14,901 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:47:14,921 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:47:14,923 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 05:47:14,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:14 BoogieIcfgContainer [2021-11-20 05:47:14,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:47:14,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:47:14,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:47:14,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:47:14,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:47:13" (1/3) ... [2021-11-20 05:47:14,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242d5d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:47:14, skipping insertion in model container [2021-11-20 05:47:14,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:47:14" (2/3) ... [2021-11-20 05:47:14,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242d5d50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:47:14, skipping insertion in model container [2021-11-20 05:47:14,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:47:14" (3/3) ... [2021-11-20 05:47:14,940 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-1.i [2021-11-20 05:47:14,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:47:14,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-20 05:47:15,011 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:47:15,027 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 05:47:15,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-20 05:47:15,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 54 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:15,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:47:15,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:15,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:15,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:15,078 INFO L85 PathProgramCache]: Analyzing trace with hash 67903625, now seen corresponding path program 1 times [2021-11-20 05:47:15,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:15,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638831184] [2021-11-20 05:47:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:15,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:15,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:15,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:15,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:47:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:15,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:47:15,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:15,372 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 05:47:15,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:15,475 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 05:47:15,476 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:15,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638831184] [2021-11-20 05:47:15,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638831184] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:47:15,479 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:47:15,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:47:15,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477918577] [2021-11-20 05:47:15,483 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:47:15,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:47:15,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:47:15,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:47:15,536 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 54 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 05:47:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:15,702 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2021-11-20 05:47:15,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:47:15,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2021-11-20 05:47:15,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:15,715 INFO L225 Difference]: With dead ends: 111 [2021-11-20 05:47:15,716 INFO L226 Difference]: Without dead ends: 107 [2021-11-20 05:47:15,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:47:15,729 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 53 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:15,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 314 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:47:15,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-20 05:47:15,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 60. [2021-11-20 05:47:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 55 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:47:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2021-11-20 05:47:15,769 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 11 [2021-11-20 05:47:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:15,770 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2021-11-20 05:47:15,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 05:47:15,770 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2021-11-20 05:47:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:47:15,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:15,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:15,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:15,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:15,981 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:15,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:15,982 INFO L85 PathProgramCache]: Analyzing trace with hash 67902731, now seen corresponding path program 1 times [2021-11-20 05:47:15,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:15,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262099462] [2021-11-20 05:47:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:15,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:15,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:15,985 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:16,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:47:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:16,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:47:16,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:16,087 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 05:47:16,140 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 05:47:16,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:16,215 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 05:47:16,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:16,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262099462] [2021-11-20 05:47:16,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262099462] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:47:16,216 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:47:16,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:47:16,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717327843] [2021-11-20 05:47:16,217 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:47:16,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:47:16,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:16,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:47:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:47:16,223 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 05:47:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:16,453 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2021-11-20 05:47:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:47:16,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2021-11-20 05:47:16,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:16,456 INFO L225 Difference]: With dead ends: 82 [2021-11-20 05:47:16,456 INFO L226 Difference]: Without dead ends: 82 [2021-11-20 05:47:16,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:47:16,458 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 22 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:16,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 166 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:47:16,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-20 05:47:16,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2021-11-20 05:47:16,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 57 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:47:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2021-11-20 05:47:16,478 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 11 [2021-11-20 05:47:16,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:16,478 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2021-11-20 05:47:16,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 05:47:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2021-11-20 05:47:16,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:47:16,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:16,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:16,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:16,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:16,691 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash 67902732, now seen corresponding path program 1 times [2021-11-20 05:47:16,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:16,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614175915] [2021-11-20 05:47:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:16,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:16,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:16,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:16,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:47:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:16,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:47:16,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:16,796 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 05:47:16,955 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 05:47:16,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:17,803 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 05:47:17,803 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:17,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614175915] [2021-11-20 05:47:17,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614175915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:47:17,804 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:47:17,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-11-20 05:47:17,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468758246] [2021-11-20 05:47:17,805 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:47:17,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:47:17,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:17,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:47:17,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:47:17,809 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:18,857 INFO L93 Difference]: Finished difference Result 111 states and 129 transitions. [2021-11-20 05:47:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:47:18,857 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2021-11-20 05:47:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:18,859 INFO L225 Difference]: With dead ends: 111 [2021-11-20 05:47:18,859 INFO L226 Difference]: Without dead ends: 111 [2021-11-20 05:47:18,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-11-20 05:47:18,861 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 190 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:18,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 458 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 182 Invalid, 0 Unknown, 71 Unchecked, 0.7s Time] [2021-11-20 05:47:18,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-20 05:47:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 67. [2021-11-20 05:47:18,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.565217391304348) internal successors, (72), 62 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:47:18,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2021-11-20 05:47:18,886 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 11 [2021-11-20 05:47:18,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:18,888 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2021-11-20 05:47:18,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:18,889 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2021-11-20 05:47:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:47:18,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:18,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:18,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:19,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:19,101 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash 955407306, now seen corresponding path program 1 times [2021-11-20 05:47:19,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:19,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992421062] [2021-11-20 05:47:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:19,102 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:19,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:19,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:19,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:47:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:19,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:47:19,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:19,207 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 05:47:19,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:19,245 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 05:47:19,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:19,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992421062] [2021-11-20 05:47:19,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992421062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:47:19,246 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:47:19,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:47:19,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134556887] [2021-11-20 05:47:19,246 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:47:19,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:47:19,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:19,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:47:19,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:47:19,253 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 05:47:19,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:19,411 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-11-20 05:47:19,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:47:19,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2021-11-20 05:47:19,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:19,414 INFO L225 Difference]: With dead ends: 107 [2021-11-20 05:47:19,414 INFO L226 Difference]: Without dead ends: 104 [2021-11-20 05:47:19,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:47:19,415 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 42 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:19,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 180 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:47:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-20 05:47:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 83. [2021-11-20 05:47:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 77 states have internal predecessors, (93), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:47:19,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 102 transitions. [2021-11-20 05:47:19,436 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 102 transitions. Word has length 11 [2021-11-20 05:47:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:19,437 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 102 transitions. [2021-11-20 05:47:19,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 05:47:19,437 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 102 transitions. [2021-11-20 05:47:19,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 05:47:19,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:19,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:19,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:19,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:19,653 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:19,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:19,654 INFO L85 PathProgramCache]: Analyzing trace with hash 955406412, now seen corresponding path program 1 times [2021-11-20 05:47:19,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:19,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579653] [2021-11-20 05:47:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:19,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:19,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:19,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:19,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:47:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:19,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:47:19,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:19,782 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 05:47:19,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:47:19,868 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:19,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579653] [2021-11-20 05:47:19,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579653] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:47:19,869 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:47:19,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:47:19,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257320797] [2021-11-20 05:47:19,869 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:47:19,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:47:19,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:19,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:47:19,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:47:19,871 INFO L87 Difference]: Start difference. First operand 83 states and 102 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 05:47:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:19,902 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2021-11-20 05:47:19,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:47:19,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 11 [2021-11-20 05:47:19,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:19,907 INFO L225 Difference]: With dead ends: 64 [2021-11-20 05:47:19,907 INFO L226 Difference]: Without dead ends: 62 [2021-11-20 05:47:19,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:47:19,909 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:19,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:47:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-20 05:47:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-20 05:47:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.5238095238095237) internal successors, (64), 58 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:47:19,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2021-11-20 05:47:19,923 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 11 [2021-11-20 05:47:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:19,923 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2021-11-20 05:47:19,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 05:47:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2021-11-20 05:47:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 05:47:19,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:19,926 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:19,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:20,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:20,138 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:20,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash 567791724, now seen corresponding path program 1 times [2021-11-20 05:47:20,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:20,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382214550] [2021-11-20 05:47:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:20,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:20,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:20,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:20,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:47:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:20,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:47:20,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:20,225 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 05:47:20,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:47:20,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:47:21,778 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:21,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382214550] [2021-11-20 05:47:21,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382214550] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:47:21,778 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:47:21,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-20 05:47:21,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658007089] [2021-11-20 05:47:21,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:47:21,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:47:21,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:21,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:47:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:47:21,796 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:23,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:23,282 INFO L93 Difference]: Finished difference Result 153 states and 174 transitions. [2021-11-20 05:47:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:47:23,283 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-20 05:47:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:23,285 INFO L225 Difference]: With dead ends: 153 [2021-11-20 05:47:23,285 INFO L226 Difference]: Without dead ends: 153 [2021-11-20 05:47:23,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2021-11-20 05:47:23,287 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 479 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:23,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 513 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 299 Invalid, 0 Unknown, 85 Unchecked, 0.9s Time] [2021-11-20 05:47:23,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-20 05:47:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 74. [2021-11-20 05:47:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 70 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:47:23,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2021-11-20 05:47:23,298 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 17 [2021-11-20 05:47:23,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:23,298 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2021-11-20 05:47:23,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2021-11-20 05:47:23,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-20 05:47:23,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:23,300 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:23,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:23,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:23,514 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:23,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:23,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1169088393, now seen corresponding path program 1 times [2021-11-20 05:47:23,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:23,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899509443] [2021-11-20 05:47:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:23,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:23,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:23,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:23,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:47:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:23,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:47:23,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:47:23,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:47:23,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:23,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899509443] [2021-11-20 05:47:23,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899509443] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:47:23,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:47:23,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-20 05:47:23,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105039478] [2021-11-20 05:47:23,925 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:47:23,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:47:23,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:23,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:47:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:47:23,927 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:24,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:24,245 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2021-11-20 05:47:24,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:47:24,248 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2021-11-20 05:47:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:24,249 INFO L225 Difference]: With dead ends: 80 [2021-11-20 05:47:24,250 INFO L226 Difference]: Without dead ends: 80 [2021-11-20 05:47:24,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:47:24,251 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 84 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:24,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 311 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:47:24,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-20 05:47:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-11-20 05:47:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 75 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:47:24,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2021-11-20 05:47:24,259 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 25 [2021-11-20 05:47:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:24,260 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2021-11-20 05:47:24,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:24,260 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2021-11-20 05:47:24,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-20 05:47:24,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:24,262 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:24,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:24,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:24,475 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash 555818796, now seen corresponding path program 2 times [2021-11-20 05:47:24,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:24,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460865106] [2021-11-20 05:47:24,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:47:24,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:24,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:24,477 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:24,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:47:24,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:47:24,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:47:24,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:47:24,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:24,583 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 05:47:25,189 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:47:25,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:47:28,339 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:28,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460865106] [2021-11-20 05:47:28,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460865106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:47:28,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:47:28,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-11-20 05:47:28,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802140645] [2021-11-20 05:47:28,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:47:28,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-20 05:47:28,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-20 05:47:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-11-20 05:47:28,342 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 28 states, 25 states have (on average 2.12) internal successors, (53), 26 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:33,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:33,161 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2021-11-20 05:47:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 05:47:33,162 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.12) internal successors, (53), 26 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-11-20 05:47:33,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:33,163 INFO L225 Difference]: With dead ends: 117 [2021-11-20 05:47:33,164 INFO L226 Difference]: Without dead ends: 117 [2021-11-20 05:47:33,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=475, Invalid=1331, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 05:47:33,166 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 522 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:33,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 661 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 469 Invalid, 0 Unknown, 95 Unchecked, 1.6s Time] [2021-11-20 05:47:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-20 05:47:33,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2021-11-20 05:47:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 78 states have (on average 1.3461538461538463) internal successors, (105), 94 states have internal predecessors, (105), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:47:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2021-11-20 05:47:33,174 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 29 [2021-11-20 05:47:33,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:33,174 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2021-11-20 05:47:33,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.12) internal successors, (53), 26 states have internal predecessors, (53), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2021-11-20 05:47:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 05:47:33,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:33,177 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:33,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-20 05:47:33,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:33,389 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:33,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:33,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1690491570, now seen corresponding path program 2 times [2021-11-20 05:47:33,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:33,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148118841] [2021-11-20 05:47:33,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:47:33,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:33,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:33,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:33,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:47:33,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 05:47:33,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:47:33,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:47:33,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-20 05:47:33,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-20 05:47:33,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:33,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148118841] [2021-11-20 05:47:33,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148118841] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:47:33,676 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:47:33,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:47:33,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661908289] [2021-11-20 05:47:33,677 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:47:33,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:47:33,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:33,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:47:33,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:47:33,678 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:33,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:33,771 INFO L93 Difference]: Finished difference Result 155 states and 171 transitions. [2021-11-20 05:47:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:47:33,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2021-11-20 05:47:33,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:33,773 INFO L225 Difference]: With dead ends: 155 [2021-11-20 05:47:33,773 INFO L226 Difference]: Without dead ends: 155 [2021-11-20 05:47:33,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:47:33,774 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 282 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:33,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 140 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:47:33,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-20 05:47:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 105. [2021-11-20 05:47:33,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 100 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:47:33,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 122 transitions. [2021-11-20 05:47:33,781 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 122 transitions. Word has length 40 [2021-11-20 05:47:33,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:33,782 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 122 transitions. [2021-11-20 05:47:33,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:47:33,782 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 122 transitions. [2021-11-20 05:47:33,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 05:47:33,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:33,784 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:33,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:33,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:33,995 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash 691496501, now seen corresponding path program 1 times [2021-11-20 05:47:33,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:33,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249047816] [2021-11-20 05:47:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:33,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:33,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:34,020 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:34,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:47:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:34,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:47:34,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:47:34,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:47:34,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:34,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249047816] [2021-11-20 05:47:34,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249047816] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:47:34,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:47:34,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-11-20 05:47:34,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349432589] [2021-11-20 05:47:34,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:47:34,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 05:47:34,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:34,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 05:47:34,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-11-20 05:47:34,948 INFO L87 Difference]: Start difference. First operand 105 states and 122 transitions. Second operand has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:47:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:35,312 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2021-11-20 05:47:35,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:47:35,313 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 44 [2021-11-20 05:47:35,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:35,314 INFO L225 Difference]: With dead ends: 105 [2021-11-20 05:47:35,314 INFO L226 Difference]: Without dead ends: 105 [2021-11-20 05:47:35,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-11-20 05:47:35,315 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 153 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:35,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 511 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:47:35,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-20 05:47:35,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2021-11-20 05:47:35,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 100 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:47:35,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2021-11-20 05:47:35,322 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 44 [2021-11-20 05:47:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:35,322 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2021-11-20 05:47:35,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.090909090909091) internal successors, (68), 22 states have internal predecessors, (68), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-20 05:47:35,323 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2021-11-20 05:47:35,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 05:47:35,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:35,325 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:35,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:35,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:35,536 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:35,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:35,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1389862613, now seen corresponding path program 2 times [2021-11-20 05:47:35,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:35,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38990672] [2021-11-20 05:47:35,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:47:35,538 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:35,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:35,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:35,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:47:35,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:47:35,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:47:35,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:47:35,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:35,699 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 05:47:35,923 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:47:35,923 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 18 treesize of output 23 [2021-11-20 05:47:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:47:35,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:47:36,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:47:36,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38990672] [2021-11-20 05:47:36,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38990672] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:47:36,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:47:36,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-11-20 05:47:36,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681000848] [2021-11-20 05:47:36,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:47:36,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:47:36,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:47:36,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:47:36,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:47:36,243 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:47:36,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:47:36,593 INFO L93 Difference]: Finished difference Result 156 states and 177 transitions. [2021-11-20 05:47:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:47:36,594 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2021-11-20 05:47:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:47:36,596 INFO L225 Difference]: With dead ends: 156 [2021-11-20 05:47:36,596 INFO L226 Difference]: Without dead ends: 156 [2021-11-20 05:47:36,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:47:36,597 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 70 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:47:36,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 343 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 177 Invalid, 0 Unknown, 43 Unchecked, 0.3s Time] [2021-11-20 05:47:36,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-20 05:47:36,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 103. [2021-11-20 05:47:36,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 84 states have (on average 1.2976190476190477) internal successors, (109), 98 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:47:36,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2021-11-20 05:47:36,603 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 50 [2021-11-20 05:47:36,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:47:36,603 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2021-11-20 05:47:36,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:47:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2021-11-20 05:47:36,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 05:47:36,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:47:36,604 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:47:36,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 05:47:36,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:47:36,825 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:47:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:47:36,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1389862614, now seen corresponding path program 1 times [2021-11-20 05:47:36,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:47:36,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053744033] [2021-11-20 05:47:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:47:36,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:47:36,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:47:36,828 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:47:36,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:47:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:47:36,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 05:47:37,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:47:37,038 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 05:47:37,047 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 05:47:39,608 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:47:39,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2021-11-20 05:47:39,620 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:47:39,621 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 30 treesize of output 30 [2021-11-20 05:47:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:47:39,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:47:58,981 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 30 treesize of output 28 [2021-11-20 05:47:59,507 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 28 treesize of output 26 [2021-11-20 05:48:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:48:01,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:01,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053744033] [2021-11-20 05:48:01,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053744033] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:48:01,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:48:01,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-20 05:48:01,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415703734] [2021-11-20 05:48:01,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:48:01,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:48:01,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:48:01,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=325, Unknown=7, NotChecked=0, Total=380 [2021-11-20 05:48:01,695 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:48:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:07,718 INFO L93 Difference]: Finished difference Result 283 states and 313 transitions. [2021-11-20 05:48:07,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 05:48:07,719 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 50 [2021-11-20 05:48:07,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:07,722 INFO L225 Difference]: With dead ends: 283 [2021-11-20 05:48:07,722 INFO L226 Difference]: Without dead ends: 283 [2021-11-20 05:48:07,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=74, Invalid=469, Unknown=9, NotChecked=0, Total=552 [2021-11-20 05:48:07,723 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 188 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 399 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:07,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 897 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 379 Invalid, 0 Unknown, 399 Unchecked, 1.5s Time] [2021-11-20 05:48:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-20 05:48:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 107. [2021-11-20 05:48:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 101 states have internal predecessors, (112), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-20 05:48:07,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2021-11-20 05:48:07,732 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 50 [2021-11-20 05:48:07,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:07,733 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2021-11-20 05:48:07,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:48:07,734 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2021-11-20 05:48:07,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 05:48:07,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:07,735 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:48:07,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:48:07,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:07,950 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:48:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash -76906781, now seen corresponding path program 1 times [2021-11-20 05:48:07,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:07,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945296656] [2021-11-20 05:48:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:07,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:07,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:07,953 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:07,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 05:48:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:08,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:48:08,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:48:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-20 05:48:08,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:48:08,306 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-20 05:48:08,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:08,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945296656] [2021-11-20 05:48:08,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945296656] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:48:08,307 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:48:08,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:48:08,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541134159] [2021-11-20 05:48:08,307 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:48:08,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:48:08,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:48:08,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:48:08,308 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 05:48:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:08,379 INFO L93 Difference]: Finished difference Result 140 states and 161 transitions. [2021-11-20 05:48:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:48:08,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 52 [2021-11-20 05:48:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:08,381 INFO L225 Difference]: With dead ends: 140 [2021-11-20 05:48:08,381 INFO L226 Difference]: Without dead ends: 140 [2021-11-20 05:48:08,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:48:08,382 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 23 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:08,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 277 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:48:08,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-20 05:48:08,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 111. [2021-11-20 05:48:08,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 91 states have (on average 1.2747252747252746) internal successors, (116), 103 states have internal predecessors, (116), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-20 05:48:08,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2021-11-20 05:48:08,388 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 52 [2021-11-20 05:48:08,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:08,393 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2021-11-20 05:48:08,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 05:48:08,393 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2021-11-20 05:48:08,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 05:48:08,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:08,395 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:48:08,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:48:08,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:08,596 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:48:08,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:08,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1665903554, now seen corresponding path program 1 times [2021-11-20 05:48:08,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:08,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524311496] [2021-11-20 05:48:08,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:08,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:08,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:08,598 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:08,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 05:48:08,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:08,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:48:08,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:48:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-20 05:48:08,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:48:08,990 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-20 05:48:08,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:08,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524311496] [2021-11-20 05:48:08,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524311496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:48:08,990 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:48:08,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:48:08,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286185772] [2021-11-20 05:48:08,991 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:48:08,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:48:08,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:08,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:48:08,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:48:08,992 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:48:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:09,125 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2021-11-20 05:48:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:48:09,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2021-11-20 05:48:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:09,127 INFO L225 Difference]: With dead ends: 146 [2021-11-20 05:48:09,127 INFO L226 Difference]: Without dead ends: 146 [2021-11-20 05:48:09,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:48:09,128 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 74 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:09,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 255 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:48:09,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-20 05:48:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 113. [2021-11-20 05:48:09,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 105 states have internal predecessors, (118), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-20 05:48:09,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2021-11-20 05:48:09,136 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 52 [2021-11-20 05:48:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:09,138 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2021-11-20 05:48:09,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:48:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2021-11-20 05:48:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-20 05:48:09,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:09,140 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:48:09,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:48:09,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:09,341 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:48:09,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash 421747884, now seen corresponding path program 3 times [2021-11-20 05:48:09,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:09,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087849348] [2021-11-20 05:48:09,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:48:09,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:09,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:09,343 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:09,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 05:48:09,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-20 05:48:09,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:48:09,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 05:48:09,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:48:09,702 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 05:48:11,187 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:48:11,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:48:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:48:23,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:23,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087849348] [2021-11-20 05:48:23,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087849348] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:48:23,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:48:23,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2021-11-20 05:48:23,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219787285] [2021-11-20 05:48:23,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:48:23,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-20 05:48:23,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:23,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-20 05:48:23,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1404, Unknown=0, NotChecked=0, Total=1806 [2021-11-20 05:48:23,355 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 43 states, 41 states have (on average 2.4634146341463414) internal successors, (101), 41 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:48:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:32,091 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2021-11-20 05:48:32,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 05:48:32,092 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.4634146341463414) internal successors, (101), 41 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2021-11-20 05:48:32,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:32,093 INFO L225 Difference]: With dead ends: 116 [2021-11-20 05:48:32,093 INFO L226 Difference]: Without dead ends: 116 [2021-11-20 05:48:32,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=444, Invalid=1536, Unknown=0, NotChecked=0, Total=1980 [2021-11-20 05:48:32,095 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 786 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:32,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 958 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 850 Invalid, 0 Unknown, 111 Unchecked, 4.4s Time] [2021-11-20 05:48:32,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-20 05:48:32,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2021-11-20 05:48:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.2375) internal successors, (99), 91 states have internal predecessors, (99), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-20 05:48:32,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2021-11-20 05:48:32,100 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 53 [2021-11-20 05:48:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:32,100 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2021-11-20 05:48:32,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.4634146341463414) internal successors, (101), 41 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:48:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2021-11-20 05:48:32,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 05:48:32,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:32,102 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:48:32,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 05:48:32,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:32,302 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:48:32,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:32,303 INFO L85 PathProgramCache]: Analyzing trace with hash 584357413, now seen corresponding path program 1 times [2021-11-20 05:48:32,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:32,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561773134] [2021-11-20 05:48:32,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:32,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:32,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:32,304 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:32,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 05:48:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:32,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:48:32,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:48:32,408 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 05:48:32,614 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:48:32,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:48:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:48:32,859 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:32,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561773134] [2021-11-20 05:48:32,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561773134] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:48:32,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:48:32,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-20 05:48:32,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619193130] [2021-11-20 05:48:32,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:48:32,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:48:32,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:32,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:48:32,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:48:32,861 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:48:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:33,141 INFO L93 Difference]: Finished difference Result 143 states and 162 transitions. [2021-11-20 05:48:33,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:48:33,142 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2021-11-20 05:48:33,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:33,143 INFO L225 Difference]: With dead ends: 143 [2021-11-20 05:48:33,144 INFO L226 Difference]: Without dead ends: 141 [2021-11-20 05:48:33,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:48:33,145 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 43 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:33,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 242 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2021-11-20 05:48:33,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-20 05:48:33,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 121. [2021-11-20 05:48:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 100 states have (on average 1.26) internal successors, (126), 110 states have internal predecessors, (126), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:48:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 143 transitions. [2021-11-20 05:48:33,153 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 143 transitions. Word has length 55 [2021-11-20 05:48:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:33,154 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 143 transitions. [2021-11-20 05:48:33,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:48:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 143 transitions. [2021-11-20 05:48:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 05:48:33,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:33,155 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:48:33,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:48:33,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:33,378 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:48:33,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:33,378 INFO L85 PathProgramCache]: Analyzing trace with hash 584357414, now seen corresponding path program 1 times [2021-11-20 05:48:33,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:33,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671202353] [2021-11-20 05:48:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:33,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:33,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:33,379 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:33,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 05:48:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:33,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 05:48:33,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:48:33,501 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 05:48:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:48:33,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:48:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:48:35,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:48:35,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671202353] [2021-11-20 05:48:35,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671202353] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:48:35,453 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:48:35,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-20 05:48:35,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442885799] [2021-11-20 05:48:35,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:48:35,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 05:48:35,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:48:35,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 05:48:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:48:35,455 INFO L87 Difference]: Start difference. First operand 121 states and 143 transitions. Second operand has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:48:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:48:36,641 INFO L93 Difference]: Finished difference Result 173 states and 194 transitions. [2021-11-20 05:48:36,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:48:36,643 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2021-11-20 05:48:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:48:36,644 INFO L225 Difference]: With dead ends: 173 [2021-11-20 05:48:36,644 INFO L226 Difference]: Without dead ends: 173 [2021-11-20 05:48:36,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-11-20 05:48:36,646 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 193 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:48:36,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 372 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 188 Invalid, 0 Unknown, 98 Unchecked, 0.7s Time] [2021-11-20 05:48:36,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-20 05:48:36,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2021-11-20 05:48:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 117 states have (on average 1.3333333333333333) internal successors, (156), 127 states have internal predecessors, (156), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:48:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 173 transitions. [2021-11-20 05:48:36,654 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 173 transitions. Word has length 55 [2021-11-20 05:48:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:48:36,654 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 173 transitions. [2021-11-20 05:48:36,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:48:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 173 transitions. [2021-11-20 05:48:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-20 05:48:36,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:48:36,656 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 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 05:48:36,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:48:36,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:48:36,865 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:48:36,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:48:36,865 INFO L85 PathProgramCache]: Analyzing trace with hash 935210686, now seen corresponding path program 1 times [2021-11-20 05:48:36,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:48:36,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38971482] [2021-11-20 05:48:36,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:48:36,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:48:36,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:48:36,867 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:48:36,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 05:48:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:48:36,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 05:48:36,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:48:37,013 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 15 treesize of output 11 [2021-11-20 05:48:37,073 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:48:37,074 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 23 treesize of output 22 [2021-11-20 05:48:37,173 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-20 05:48:37,173 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 32 treesize of output 34 [2021-11-20 05:48:37,340 INFO L354 Elim1Store]: treesize reduction 116, result has 18.3 percent of original size [2021-11-20 05:48:37,341 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 6 case distinctions, treesize of input 41 treesize of output 46 [2021-11-20 05:48:37,656 INFO L354 Elim1Store]: treesize reduction 180, result has 16.3 percent of original size [2021-11-20 05:48:37,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 58 [2021-11-20 05:48:38,133 INFO L354 Elim1Store]: treesize reduction 277, result has 14.5 percent of original size [2021-11-20 05:48:38,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 73 [2021-11-20 05:48:38,633 INFO L354 Elim1Store]: treesize reduction 392, result has 13.1 percent of original size [2021-11-20 05:48:38,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 88 [2021-11-20 05:48:39,217 INFO L354 Elim1Store]: treesize reduction 525, result has 11.9 percent of original size [2021-11-20 05:48:39,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 86 treesize of output 103 [2021-11-20 05:48:40,019 INFO L354 Elim1Store]: treesize reduction 556, result has 11.3 percent of original size [2021-11-20 05:48:40,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2021-11-20 05:48:40,898 INFO L354 Elim1Store]: treesize reduction 644, result has 11.0 percent of original size [2021-11-20 05:48:40,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 93 treesize of output 116 [2021-11-20 05:49:09,610 INFO L354 Elim1Store]: treesize reduction 522, result has 0.2 percent of original size [2021-11-20 05:49:09,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 96 treesize of output 34 [2021-11-20 05:49:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:49:09,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:49:52,221 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 86 treesize of output 84 [2021-11-20 05:49:52,225 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 193 treesize of output 191 [2021-11-20 05:49:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 126 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:49:52,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:49:52,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38971482] [2021-11-20 05:49:52,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38971482] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:49:52,766 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:49:52,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2021-11-20 05:49:52,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311423478] [2021-11-20 05:49:52,767 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:49:52,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 05:49:52,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:49:52,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 05:49:52,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1441, Unknown=30, NotChecked=0, Total=2070 [2021-11-20 05:49:52,769 INFO L87 Difference]: Start difference. First operand 138 states and 173 transitions. Second operand has 46 states, 45 states have (on average 2.111111111111111) internal successors, (95), 46 states have internal predecessors, (95), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:49:58,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:49:59,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:49:59,195 INFO L93 Difference]: Finished difference Result 175 states and 211 transitions. [2021-11-20 05:49:59,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 05:49:59,197 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.111111111111111) internal successors, (95), 46 states have internal predecessors, (95), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2021-11-20 05:49:59,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:49:59,199 INFO L225 Difference]: With dead ends: 175 [2021-11-20 05:49:59,199 INFO L226 Difference]: Without dead ends: 175 [2021-11-20 05:49:59,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 72.3s TimeCoverageRelationStatistics Valid=700, Invalid=1720, Unknown=30, NotChecked=0, Total=2450 [2021-11-20 05:49:59,202 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 204 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 66 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:49:59,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 642 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 723 Invalid, 1 Unknown, 37 Unchecked, 5.4s Time] [2021-11-20 05:49:59,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-20 05:49:59,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 149. [2021-11-20 05:49:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 126 states have (on average 1.3253968253968254) internal successors, (167), 137 states have internal predecessors, (167), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:49:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 184 transitions. [2021-11-20 05:49:59,211 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 184 transitions. Word has length 56 [2021-11-20 05:49:59,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:49:59,211 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 184 transitions. [2021-11-20 05:49:59,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.111111111111111) internal successors, (95), 46 states have internal predecessors, (95), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:49:59,212 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 184 transitions. [2021-11-20 05:49:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 05:49:59,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:49:59,213 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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 05:49:59,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-20 05:49:59,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:49:59,428 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:49:59,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:49:59,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1073285418, now seen corresponding path program 1 times [2021-11-20 05:49:59,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:49:59,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260058130] [2021-11-20 05:49:59,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:49:59,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:49:59,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:49:59,430 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:49:59,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 05:49:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:49:59,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:49:59,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:49:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-20 05:49:59,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:49:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-20 05:49:59,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:49:59,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260058130] [2021-11-20 05:49:59,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260058130] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:49:59,939 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:49:59,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:49:59,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861914377] [2021-11-20 05:49:59,940 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:49:59,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:49:59,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:49:59,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:49:59,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:49:59,941 INFO L87 Difference]: Start difference. First operand 149 states and 184 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:50:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:50:00,014 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2021-11-20 05:50:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:50:00,015 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2021-11-20 05:50:00,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:50:00,018 INFO L225 Difference]: With dead ends: 161 [2021-11-20 05:50:00,018 INFO L226 Difference]: Without dead ends: 161 [2021-11-20 05:50:00,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:50:00,020 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 114 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:50:00,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 108 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:50:00,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-20 05:50:00,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2021-11-20 05:50:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 133 states have (on average 1.3157894736842106) internal successors, (175), 144 states have internal predecessors, (175), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:50:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 192 transitions. [2021-11-20 05:50:00,032 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 192 transitions. Word has length 57 [2021-11-20 05:50:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:50:00,033 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 192 transitions. [2021-11-20 05:50:00,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-20 05:50:00,033 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 192 transitions. [2021-11-20 05:50:00,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 05:50:00,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:50:00,034 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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 05:50:00,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:50:00,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:50:00,246 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:50:00,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:50:00,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1073239675, now seen corresponding path program 1 times [2021-11-20 05:50:00,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:50:00,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425779899] [2021-11-20 05:50:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:50:00,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:50:00,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:50:00,248 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:50:00,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 05:50:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:50:00,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 05:50:00,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:50:00,492 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:50:00,493 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 24 treesize of output 24 [2021-11-20 05:50:00,669 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 15 treesize of output 11 [2021-11-20 05:50:00,917 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:50:00,917 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 23 treesize of output 22 [2021-11-20 05:50:01,196 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-20 05:50:01,196 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 32 treesize of output 34 [2021-11-20 05:50:01,619 INFO L354 Elim1Store]: treesize reduction 131, result has 18.1 percent of original size [2021-11-20 05:50:01,619 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 6 case distinctions, treesize of input 44 treesize of output 49 [2021-11-20 05:50:02,087 INFO L354 Elim1Store]: treesize reduction 180, result has 16.3 percent of original size [2021-11-20 05:50:02,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 58 [2021-11-20 05:50:02,635 INFO L354 Elim1Store]: treesize reduction 277, result has 14.5 percent of original size [2021-11-20 05:50:02,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 73 [2021-11-20 05:50:03,194 INFO L354 Elim1Store]: treesize reduction 344, result has 13.4 percent of original size [2021-11-20 05:50:03,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 82 [2021-11-20 05:50:04,037 INFO L354 Elim1Store]: treesize reduction 444, result has 12.3 percent of original size [2021-11-20 05:50:04,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 94 [2021-11-20 05:50:04,969 INFO L354 Elim1Store]: treesize reduction 586, result has 11.2 percent of original size [2021-11-20 05:50:04,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 89 treesize of output 109 [2021-11-20 05:50:06,112 INFO L354 Elim1Store]: treesize reduction 644, result has 11.0 percent of original size [2021-11-20 05:50:06,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 93 treesize of output 116 [2021-11-20 05:50:36,835 INFO L354 Elim1Store]: treesize reduction 522, result has 0.2 percent of original size [2021-11-20 05:50:36,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 96 treesize of output 34 [2021-11-20 05:50:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:50:37,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:51:04,491 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 86 treesize of output 84 [2021-11-20 05:51:04,496 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 23470 treesize of output 23468 [2021-11-20 05:51:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 126 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:51:06,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:51:06,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425779899] [2021-11-20 05:51:06,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425779899] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:51:06,471 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:51:06,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24] total 51 [2021-11-20 05:51:06,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52106448] [2021-11-20 05:51:06,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:51:06,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-20 05:51:06,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:51:06,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-20 05:51:06,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=684, Invalid=1961, Unknown=7, NotChecked=0, Total=2652 [2021-11-20 05:51:06,474 INFO L87 Difference]: Start difference. First operand 156 states and 192 transitions. Second operand has 52 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 52 states have internal predecessors, (105), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:51:07,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:51:07,554 INFO L93 Difference]: Finished difference Result 159 states and 194 transitions. [2021-11-20 05:51:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 05:51:07,555 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 52 states have internal predecessors, (105), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 57 [2021-11-20 05:51:07,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:51:07,556 INFO L225 Difference]: With dead ends: 159 [2021-11-20 05:51:07,556 INFO L226 Difference]: Without dead ends: 159 [2021-11-20 05:51:07,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 58.8s TimeCoverageRelationStatistics Valid=694, Invalid=2161, Unknown=7, NotChecked=0, Total=2862 [2021-11-20 05:51:07,558 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 97 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:51:07,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 613 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 122 Unchecked, 0.8s Time] [2021-11-20 05:51:07,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-20 05:51:07,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2021-11-20 05:51:07,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 135 states have (on average 1.3111111111111111) internal successors, (177), 147 states have internal predecessors, (177), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:51:07,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 194 transitions. [2021-11-20 05:51:07,565 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 194 transitions. Word has length 57 [2021-11-20 05:51:07,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:51:07,566 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 194 transitions. [2021-11-20 05:51:07,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.0588235294117645) internal successors, (105), 52 states have internal predecessors, (105), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:51:07,566 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 194 transitions. [2021-11-20 05:51:07,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-20 05:51:07,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:51:07,567 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:51:07,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 05:51:07,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:51:07,780 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:51:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:51:07,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1089308576, now seen corresponding path program 1 times [2021-11-20 05:51:07,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:51:07,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373792711] [2021-11-20 05:51:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:51:07,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:51:07,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:51:07,782 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:51:07,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 05:51:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:51:07,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 05:51:07,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:51:07,977 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 15 treesize of output 11 [2021-11-20 05:51:08,040 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:51:08,040 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 23 treesize of output 22 [2021-11-20 05:51:08,162 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-20 05:51:08,163 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 32 treesize of output 34 [2021-11-20 05:51:08,341 INFO L354 Elim1Store]: treesize reduction 131, result has 18.1 percent of original size [2021-11-20 05:51:08,342 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 6 case distinctions, treesize of input 44 treesize of output 49 [2021-11-20 05:51:08,588 INFO L354 Elim1Store]: treesize reduction 180, result has 16.3 percent of original size [2021-11-20 05:51:08,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 58 [2021-11-20 05:51:08,910 INFO L354 Elim1Store]: treesize reduction 256, result has 14.7 percent of original size [2021-11-20 05:51:08,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 59 treesize of output 70 [2021-11-20 05:51:09,320 INFO L354 Elim1Store]: treesize reduction 344, result has 13.4 percent of original size [2021-11-20 05:51:09,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 68 treesize of output 82 [2021-11-20 05:51:09,878 INFO L354 Elim1Store]: treesize reduction 444, result has 12.3 percent of original size [2021-11-20 05:51:09,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 94 [2021-11-20 05:51:10,518 INFO L354 Elim1Store]: treesize reduction 556, result has 11.3 percent of original size [2021-11-20 05:51:10,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2021-11-20 05:51:11,263 INFO L354 Elim1Store]: treesize reduction 644, result has 11.0 percent of original size [2021-11-20 05:51:11,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 93 treesize of output 116 [2021-11-20 05:51:38,056 INFO L354 Elim1Store]: treesize reduction 522, result has 0.2 percent of original size [2021-11-20 05:51:38,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 96 treesize of output 34 [2021-11-20 05:51:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:51:38,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:32,490 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 86 treesize of output 84 [2021-11-20 05:52:32,495 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 193 treesize of output 191 [2021-11-20 05:52:32,995 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 126 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:52:32,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:52:32,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373792711] [2021-11-20 05:52:32,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373792711] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:32,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:52:32,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2021-11-20 05:52:32,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447363917] [2021-11-20 05:52:32,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:32,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 05:52:32,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:52:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 05:52:32,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1443, Unknown=28, NotChecked=0, Total=2070 [2021-11-20 05:52:32,998 INFO L87 Difference]: Start difference. First operand 159 states and 194 transitions. Second operand has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:52:37,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:37,080 INFO L93 Difference]: Finished difference Result 178 states and 214 transitions. [2021-11-20 05:52:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 05:52:37,081 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-11-20 05:52:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:37,083 INFO L225 Difference]: With dead ends: 178 [2021-11-20 05:52:37,083 INFO L226 Difference]: Without dead ends: 178 [2021-11-20 05:52:37,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 81.9s TimeCoverageRelationStatistics Valid=701, Invalid=1721, Unknown=28, NotChecked=0, Total=2450 [2021-11-20 05:52:37,085 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 126 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:37,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 759 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 714 Invalid, 0 Unknown, 39 Unchecked, 3.2s Time] [2021-11-20 05:52:37,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-20 05:52:37,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 160. [2021-11-20 05:52:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 136 states have (on average 1.3088235294117647) internal successors, (178), 148 states have internal predecessors, (178), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:52:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 195 transitions. [2021-11-20 05:52:37,092 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 195 transitions. Word has length 58 [2021-11-20 05:52:37,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:37,093 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 195 transitions. [2021-11-20 05:52:37,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 46 states have internal predecessors, (97), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:52:37,093 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 195 transitions. [2021-11-20 05:52:37,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 05:52:37,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:37,094 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:37,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:37,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:52:37,305 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:52:37,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:37,305 INFO L85 PathProgramCache]: Analyzing trace with hash 382788138, now seen corresponding path program 1 times [2021-11-20 05:52:37,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:52:37,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440525526] [2021-11-20 05:52:37,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:37,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:52:37,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:52:37,306 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:52:37,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 05:52:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:37,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 05:52:37,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:37,467 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 05:52:37,481 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 05:52:40,217 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:52:40,217 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 34 treesize of output 36 [2021-11-20 05:52:40,228 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:52:40,228 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 28 treesize of output 28 [2021-11-20 05:52:40,446 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:52:40,446 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 34 treesize of output 36 [2021-11-20 05:52:40,457 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:52:40,458 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 28 treesize of output 28 [2021-11-20 05:52:40,533 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-20 05:52:40,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:56,574 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 05:52:56,574 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 53 treesize of output 52 [2021-11-20 05:53:12,256 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|v_ldv_malloc_#res.base_119| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (or (exists ((|v_ldv_malloc_#res.base_123| (_ BitVec 32)) (|v_ldv_malloc_#res.base_119| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_123|)))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| |v_ldv_malloc_#res.base_119|)) (or (not (let ((.cse0 (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| .cse0) (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) .cse0)))) (exists ((v_ldv_malloc_~size_112 (_ BitVec 32)) (v_ldv_malloc_~size_116 (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32))) (select (store (store |c_old(#length)| |v_ldv_malloc_#res.base_123| v_ldv_malloc_~size_116) |v_ldv_malloc_#res.base_119| v_ldv_malloc_~size_112) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8|))))))) (and (forall ((v_ldv_malloc_~size_112 (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32))) (select (store |c_#length| |v_ldv_malloc_#res.base_119| v_ldv_malloc_~size_112) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8|))) (let ((.cse1 (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| .cse1) (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) .cse1)))) (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| |v_ldv_malloc_#res.base_119|))) is different from false [2021-11-20 05:53:29,338 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ BitVec 32)) (|v_ldv_malloc_#res.base_124| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|v_ldv_malloc_#res.base_119| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_124|)))) (exists ((|v_ldv_malloc_#res.base_123| (_ BitVec 32)) (|v_ldv_malloc_#res.base_119| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_123|)))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| |v_ldv_malloc_#res.base_119|)) (or (not (let ((.cse0 (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| .cse0) (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) .cse0)))) (exists ((v_ldv_malloc_~size_112 (_ BitVec 32)) (v_ldv_malloc_~size_116 (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32))) (select (store (store |c_old(#length)| |v_ldv_malloc_#res.base_123| v_ldv_malloc_~size_116) |v_ldv_malloc_#res.base_119| v_ldv_malloc_~size_112) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8|))))))) (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| |v_ldv_malloc_#res.base_119|) (and (let ((.cse1 (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| .cse1) (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) .cse1))) (forall ((v_ldv_malloc_~size_112 (_ BitVec 32)) (ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32))) (select (store (store |c_#length| |v_ldv_malloc_#res.base_124| ldv_malloc_~size) |v_ldv_malloc_#res.base_119| v_ldv_malloc_~size_112) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8|)))))) is different from false [2021-11-20 05:53:46,219 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 57 treesize of output 55 [2021-11-20 05:53:47,313 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 57 treesize of output 55 [2021-11-20 05:53:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 145 trivial. 7 not checked. [2021-11-20 05:53:47,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:47,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440525526] [2021-11-20 05:53:47,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440525526] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:47,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:47,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 26 [2021-11-20 05:53:47,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013851634] [2021-11-20 05:53:47,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:47,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 05:53:47,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 05:53:47,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=524, Unknown=9, NotChecked=94, Total=702 [2021-11-20 05:53:47,527 INFO L87 Difference]: Start difference. First operand 160 states and 195 transitions. Second operand has 27 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:53:50,115 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ BitVec 32)) (|v_ldv_malloc_#res.base_124| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|v_ldv_malloc_#res.base_119| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_124|)))) (exists ((|v_ldv_malloc_#res.base_123| (_ BitVec 32)) (|v_ldv_malloc_#res.base_119| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_123|)))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| |v_ldv_malloc_#res.base_119|)) (or (not (let ((.cse0 (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| .cse0) (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) .cse0)))) (exists ((v_ldv_malloc_~size_112 (_ BitVec 32)) (v_ldv_malloc_~size_116 (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32))) (select (store (store |c_old(#length)| |v_ldv_malloc_#res.base_123| v_ldv_malloc_~size_116) |v_ldv_malloc_#res.base_119| v_ldv_malloc_~size_112) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8|))))))) (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| |v_ldv_malloc_#res.base_119|) (and (let ((.cse1 (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| .cse1) (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) .cse1))) (forall ((v_ldv_malloc_~size_112 (_ BitVec 32)) (ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32))) (select (store (store |c_#length| |v_ldv_malloc_#res.base_124| ldv_malloc_~size) |v_ldv_malloc_#res.base_119| v_ldv_malloc_~size_112) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8|)))))) (= |c_old(#valid)| |c_#valid|) (= |c_#length| |c_old(#length)|)) is different from false [2021-11-20 05:53:52,136 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ BitVec 32)) (|v_ldv_malloc_#res.base_124| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|v_ldv_malloc_#res.base_119| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ldv_malloc_#res.base_124|)))) (exists ((|v_ldv_malloc_#res.base_123| (_ BitVec 32)) (|v_ldv_malloc_#res.base_119| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_123|)))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| |v_ldv_malloc_#res.base_119|)) (or (not (let ((.cse0 (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| .cse0) (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) .cse0)))) (exists ((v_ldv_malloc_~size_112 (_ BitVec 32)) (v_ldv_malloc_~size_116 (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32))) (select (store (store |c_old(#length)| |v_ldv_malloc_#res.base_123| v_ldv_malloc_~size_116) |v_ldv_malloc_#res.base_119| v_ldv_malloc_~size_112) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8|))))))) (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| |v_ldv_malloc_#res.base_119|) (and (let ((.cse1 (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| .cse1) (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) .cse1))) (forall ((v_ldv_malloc_~size_112 (_ BitVec 32)) (ldv_malloc_~size (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32))) (select (store (store |c_#length| |v_ldv_malloc_#res.base_124| ldv_malloc_~size) |v_ldv_malloc_#res.base_119| v_ldv_malloc_~size_112) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8|)))))) (= |c_old(#valid)| |c_#valid|) (= c_ldv_malloc_~size |c_ldv_malloc_#in~size|) (= |c_#length| |c_old(#length)|)) is different from false [2021-11-20 05:53:54,156 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ldv_malloc_~size (_ BitVec 32)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| ldv_malloc_~size) |c_#length|) (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_old(#valid)| |ldv_malloc_#res.base|)))))))) (forall ((|v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| (_ BitVec 32)) (|v_ldv_malloc_#res.base_119| (_ BitVec 32)) (|v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ BitVec 32))) (or (exists ((|v_ldv_malloc_#res.base_123| (_ BitVec 32)) (|v_ldv_malloc_#res.base_119| (_ BitVec 32))) (and (= (_ bv0 1) (bvneg (bvneg (select |c_old(#valid)| |v_ldv_malloc_#res.base_123|)))) (not (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| |v_ldv_malloc_#res.base_119|)) (or (not (let ((.cse0 (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| .cse0) (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) .cse0)))) (exists ((v_ldv_malloc_~size_112 (_ BitVec 32)) (v_ldv_malloc_~size_116 (_ BitVec 32))) (not (bvule (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32))) (select (store (store |c_old(#length)| |v_ldv_malloc_#res.base_123| v_ldv_malloc_~size_116) |v_ldv_malloc_#res.base_119| v_ldv_malloc_~size_112) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8|))))))) (and (forall ((v_ldv_malloc_~size_112 (_ BitVec 32))) (bvule (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32))) (select (store |c_#length| |v_ldv_malloc_#res.base_119| v_ldv_malloc_~size_112) |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8|))) (let ((.cse1 (bvmul |v_ULTIMATE.start_alloc_17_~i~0#1_BEFORE_CALL_8| (_ bv4 32)))) (bvule (bvadd (_ bv4 32) |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| .cse1) (bvadd |v_ULTIMATE.start_alloc_17_~array#1.offset_BEFORE_CALL_6| (_ bv8 32) .cse1)))) (= |v_ULTIMATE.start_alloc_17_~array#1.base_BEFORE_CALL_8| |v_ldv_malloc_#res.base_119|))) (= (select |c_#length| |c_ldv_malloc_#res.base|) |c_ldv_malloc_#in~size|) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ldv_malloc_#res.base|))) (= |c_ldv_malloc_#res.offset| (_ bv0 32))) is different from false [2021-11-20 05:53:57,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:57,676 INFO L93 Difference]: Finished difference Result 175 states and 212 transitions. [2021-11-20 05:53:57,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:53:57,677 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 60 [2021-11-20 05:53:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:57,679 INFO L225 Difference]: With dead ends: 175 [2021-11-20 05:53:57,679 INFO L226 Difference]: Without dead ends: 175 [2021-11-20 05:53:57,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=135, Invalid=865, Unknown=12, NotChecked=320, Total=1332 [2021-11-20 05:53:57,687 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 37 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 420 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:57,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 667 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 140 Invalid, 0 Unknown, 420 Unchecked, 0.5s Time] [2021-11-20 05:53:57,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-20 05:53:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-11-20 05:53:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 147 states have (on average 1.2993197278911566) internal successors, (191), 159 states have internal predecessors, (191), 7 states have call successors, (7), 4 states have call predecessors, (7), 7 states have return successors, (13), 10 states have call predecessors, (13), 7 states have call successors, (13) [2021-11-20 05:53:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 211 transitions. [2021-11-20 05:53:57,698 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 211 transitions. Word has length 60 [2021-11-20 05:53:57,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:57,699 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 211 transitions. [2021-11-20 05:53:57,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 25 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:53:57,699 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 211 transitions. [2021-11-20 05:53:57,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 05:53:57,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:57,700 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:57,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:57,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:57,912 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:53:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash -127746039, now seen corresponding path program 1 times [2021-11-20 05:53:57,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:57,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716930072] [2021-11-20 05:53:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:57,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:57,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:57,914 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:57,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 05:53:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:58,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:53:58,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-20 05:53:58,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:58,325 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-20 05:53:58,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:58,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716930072] [2021-11-20 05:53:58,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716930072] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:58,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:58,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-20 05:53:58,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847064822] [2021-11-20 05:53:58,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:58,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:53:58,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:58,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:53:58,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:58,328 INFO L87 Difference]: Start difference. First operand 174 states and 211 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:53:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:58,358 INFO L93 Difference]: Finished difference Result 163 states and 182 transitions. [2021-11-20 05:53:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:53:58,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2021-11-20 05:53:58,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:58,361 INFO L225 Difference]: With dead ends: 163 [2021-11-20 05:53:58,361 INFO L226 Difference]: Without dead ends: 163 [2021-11-20 05:53:58,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:58,362 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 33 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:58,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 210 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:53:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-20 05:53:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 138. [2021-11-20 05:53:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 113 states have (on average 1.2212389380530972) internal successors, (138), 126 states have internal predecessors, (138), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:53:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 152 transitions. [2021-11-20 05:53:58,369 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 152 transitions. Word has length 60 [2021-11-20 05:53:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:58,369 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 152 transitions. [2021-11-20 05:53:58,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:53:58,370 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 152 transitions. [2021-11-20 05:53:58,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 05:53:58,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:58,371 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:58,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-20 05:53:58,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:58,585 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:53:58,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:58,585 INFO L85 PathProgramCache]: Analyzing trace with hash 234973718, now seen corresponding path program 1 times [2021-11-20 05:53:58,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:58,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741012831] [2021-11-20 05:53:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:58,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:58,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:58,588 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:58,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 05:53:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:58,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 05:53:58,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-20 05:53:59,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:00,399 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 11 treesize of output 9 [2021-11-20 05:54:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-20 05:54:01,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:54:01,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741012831] [2021-11-20 05:54:01,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741012831] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:01,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:01,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-11-20 05:54:01,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405102772] [2021-11-20 05:54:01,399 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:01,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:54:01,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:54:01,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:54:01,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:54:01,400 INFO L87 Difference]: Start difference. First operand 138 states and 152 transitions. Second operand has 18 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:54:04,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:54:04,413 INFO L93 Difference]: Finished difference Result 228 states and 254 transitions. [2021-11-20 05:54:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 05:54:04,414 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 62 [2021-11-20 05:54:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:54:04,416 INFO L225 Difference]: With dead ends: 228 [2021-11-20 05:54:04,416 INFO L226 Difference]: Without dead ends: 228 [2021-11-20 05:54:04,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2021-11-20 05:54:04,417 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 324 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:54:04,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 703 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 272 Invalid, 0 Unknown, 43 Unchecked, 1.9s Time] [2021-11-20 05:54:04,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-20 05:54:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 143. [2021-11-20 05:54:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 130 states have internal predecessors, (144), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:54:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 158 transitions. [2021-11-20 05:54:04,424 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 158 transitions. Word has length 62 [2021-11-20 05:54:04,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:54:04,425 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 158 transitions. [2021-11-20 05:54:04,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:54:04,425 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 158 transitions. [2021-11-20 05:54:04,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-20 05:54:04,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:54:04,426 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1] [2021-11-20 05:54:04,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-20 05:54:04,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:54:04,639 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:54:04,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:54:04,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1180967254, now seen corresponding path program 1 times [2021-11-20 05:54:04,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:54:04,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362182172] [2021-11-20 05:54:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:54:04,640 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:54:04,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:54:04,641 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:54:04,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 05:54:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:54:04,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 05:54:04,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:04,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-20 05:54:05,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-20 05:54:05,208 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 05:54:05,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 05:54:05,442 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-20 05:54:05,443 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 3 case distinctions, treesize of input 32 treesize of output 34 [2021-11-20 05:54:05,737 INFO L354 Elim1Store]: treesize reduction 116, result has 18.3 percent of original size [2021-11-20 05:54:05,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 46 [2021-11-20 05:54:06,135 INFO L354 Elim1Store]: treesize reduction 198, result has 16.1 percent of original size [2021-11-20 05:54:06,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 61 [2021-11-20 05:54:06,681 INFO L354 Elim1Store]: treesize reduction 298, result has 14.4 percent of original size [2021-11-20 05:54:06,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 76 [2021-11-20 05:54:07,310 INFO L354 Elim1Store]: treesize reduction 416, result has 13.0 percent of original size [2021-11-20 05:54:07,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 91 [2021-11-20 05:54:08,079 INFO L354 Elim1Store]: treesize reduction 444, result has 12.3 percent of original size [2021-11-20 05:54:08,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 77 treesize of output 94 [2021-11-20 05:54:08,958 INFO L354 Elim1Store]: treesize reduction 556, result has 11.3 percent of original size [2021-11-20 05:54:08,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2021-11-20 05:54:10,138 INFO L354 Elim1Store]: treesize reduction 644, result has 11.0 percent of original size [2021-11-20 05:54:10,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 93 treesize of output 116 [2021-11-20 05:54:11,030 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 102 treesize of output 100 [2021-11-20 05:54:13,670 INFO L354 Elim1Store]: treesize reduction 522, result has 0.2 percent of original size [2021-11-20 05:54:13,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 96 treesize of output 34 [2021-11-20 05:54:13,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-11-20 05:54:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:14,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:38,749 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 113 treesize of output 111 [2021-11-20 05:54:38,757 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 51054 treesize of output 51052 [2021-11-20 05:54:41,711 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:41,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:54:41,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362182172] [2021-11-20 05:54:41,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362182172] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:41,711 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:41,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 52 [2021-11-20 05:54:41,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812353811] [2021-11-20 05:54:41,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:41,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-20 05:54:41,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:54:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-20 05:54:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=2243, Unknown=5, NotChecked=0, Total=2756 [2021-11-20 05:54:41,714 INFO L87 Difference]: Start difference. First operand 143 states and 158 transitions. Second operand has 53 states, 52 states have (on average 2.076923076923077) internal successors, (108), 52 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:54:45,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:47,710 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:48,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:52,556 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:01,483 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:04,006 INFO L93 Difference]: Finished difference Result 149 states and 163 transitions. [2021-11-20 05:55:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 05:55:04,007 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 2.076923076923077) internal successors, (108), 52 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 61 [2021-11-20 05:55:04,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:04,008 INFO L225 Difference]: With dead ends: 149 [2021-11-20 05:55:04,008 INFO L226 Difference]: Without dead ends: 149 [2021-11-20 05:55:04,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=693, Invalid=2842, Unknown=5, NotChecked=0, Total=3540 [2021-11-20 05:55:04,010 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 291 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 152 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 89 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:04,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 1180 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1322 Invalid, 4 Unknown, 89 Unchecked, 19.4s Time] [2021-11-20 05:55:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-20 05:55:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2021-11-20 05:55:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 130 states have internal predecessors, (143), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:55:04,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 157 transitions. [2021-11-20 05:55:04,017 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 157 transitions. Word has length 61 [2021-11-20 05:55:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:04,017 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 157 transitions. [2021-11-20 05:55:04,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 2.076923076923077) internal successors, (108), 52 states have internal predecessors, (108), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:55:04,018 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 157 transitions. [2021-11-20 05:55:04,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-20 05:55:04,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:04,019 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:55:04,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-20 05:55:04,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:55:04,254 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:55:04,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:04,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1305749326, now seen corresponding path program 1 times [2021-11-20 05:55:04,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:55:04,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154791760] [2021-11-20 05:55:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:04,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:55:04,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:55:04,257 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:55:04,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 05:55:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:04,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 05:55:04,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:55:04,787 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 15 treesize of output 11 [2021-11-20 05:55:05,113 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 15 treesize of output 7 [2021-11-20 05:55:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-20 05:55:05,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:55:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-20 05:55:05,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:55:05,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154791760] [2021-11-20 05:55:05,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154791760] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:55:05,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:55:05,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2021-11-20 05:55:05,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948892960] [2021-11-20 05:55:05,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:55:05,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:55:05,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:55:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:55:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:55:05,569 INFO L87 Difference]: Start difference. First operand 143 states and 157 transitions. Second operand has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:55:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:07,436 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2021-11-20 05:55:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 05:55:07,437 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 63 [2021-11-20 05:55:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:07,439 INFO L225 Difference]: With dead ends: 234 [2021-11-20 05:55:07,440 INFO L226 Difference]: Without dead ends: 234 [2021-11-20 05:55:07,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 05:55:07,441 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 318 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:07,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 1071 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 425 Invalid, 0 Unknown, 44 Unchecked, 0.9s Time] [2021-11-20 05:55:07,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-20 05:55:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 144. [2021-11-20 05:55:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 120 states have (on average 1.2) internal successors, (144), 131 states have internal predecessors, (144), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:55:07,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 158 transitions. [2021-11-20 05:55:07,449 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 158 transitions. Word has length 63 [2021-11-20 05:55:07,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:07,450 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 158 transitions. [2021-11-20 05:55:07,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.823529411764706) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:55:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 158 transitions. [2021-11-20 05:55:07,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 05:55:07,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:07,452 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1] [2021-11-20 05:55:07,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-11-20 05:55:07,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:55:07,684 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:55:07,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:07,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2044720857, now seen corresponding path program 1 times [2021-11-20 05:55:07,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:55:07,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326684152] [2021-11-20 05:55:07,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:55:07,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:55:07,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:55:07,687 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:55:07,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-20 05:55:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:55:07,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 05:55:07,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:55:07,893 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 15 treesize of output 11 [2021-11-20 05:55:07,990 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-20 05:55:07,991 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 25 treesize of output 24 [2021-11-20 05:55:08,168 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-11-20 05:55:08,168 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 34 treesize of output 36 [2021-11-20 05:55:08,433 INFO L354 Elim1Store]: treesize reduction 141, result has 18.0 percent of original size [2021-11-20 05:55:08,433 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 6 case distinctions, treesize of input 46 treesize of output 51 [2021-11-20 05:55:08,782 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-11-20 05:55:08,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 60 [2021-11-20 05:55:09,226 INFO L354 Elim1Store]: treesize reduction 270, result has 14.6 percent of original size [2021-11-20 05:55:09,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 72 [2021-11-20 05:55:09,794 INFO L354 Elim1Store]: treesize reduction 360, result has 13.3 percent of original size [2021-11-20 05:55:09,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 84 [2021-11-20 05:55:10,526 INFO L354 Elim1Store]: treesize reduction 489, result has 12.1 percent of original size [2021-11-20 05:55:10,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 82 treesize of output 99 [2021-11-20 05:55:11,562 INFO L354 Elim1Store]: treesize reduction 544, result has 11.8 percent of original size [2021-11-20 05:55:11,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2021-11-20 05:55:35,860 INFO L354 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2021-11-20 05:55:35,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 91 treesize of output 31 [2021-11-20 05:55:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 4 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:55:35,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:13,958 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 80 treesize of output 78 [2021-11-20 05:56:13,964 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 212 treesize of output 208 [2021-11-20 05:56:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 100 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:56:15,086 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:15,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326684152] [2021-11-20 05:56:15,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326684152] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:15,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:15,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2021-11-20 05:56:15,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795643113] [2021-11-20 05:56:15,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:15,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 05:56:15,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 05:56:15,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=1529, Unknown=22, NotChecked=0, Total=2070 [2021-11-20 05:56:15,089 INFO L87 Difference]: Start difference. First operand 144 states and 158 transitions. Second operand has 46 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 46 states have internal predecessors, (107), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:56:22,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:25,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:26,513 INFO L93 Difference]: Finished difference Result 179 states and 193 transitions. [2021-11-20 05:56:26,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-20 05:56:26,514 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 46 states have internal predecessors, (107), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2021-11-20 05:56:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:26,515 INFO L225 Difference]: With dead ends: 179 [2021-11-20 05:56:26,515 INFO L226 Difference]: Without dead ends: 179 [2021-11-20 05:56:26,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 64.7s TimeCoverageRelationStatistics Valid=713, Invalid=2127, Unknown=22, NotChecked=0, Total=2862 [2021-11-20 05:56:26,517 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 394 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 75 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:26,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 891 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1040 Invalid, 1 Unknown, 40 Unchecked, 9.2s Time] [2021-11-20 05:56:26,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-20 05:56:26,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 151. [2021-11-20 05:56:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 127 states have (on average 1.2283464566929134) internal successors, (156), 138 states have internal predecessors, (156), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:56:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 170 transitions. [2021-11-20 05:56:26,522 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 170 transitions. Word has length 62 [2021-11-20 05:56:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:26,522 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 170 transitions. [2021-11-20 05:56:26,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.3777777777777778) internal successors, (107), 46 states have internal predecessors, (107), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:56:26,523 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 170 transitions. [2021-11-20 05:56:26,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 05:56:26,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:26,524 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:26,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:26,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:26,729 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:56:26,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:26,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1823523339, now seen corresponding path program 1 times [2021-11-20 05:56:26,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:26,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039363063] [2021-11-20 05:56:26,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:26,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:26,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:26,730 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:26,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-20 05:56:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:26,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:56:26,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:27,982 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 19 treesize of output 15 [2021-11-20 05:56:28,826 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 15 treesize of output 7 [2021-11-20 05:56:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:56:28,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-20 05:56:29,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:29,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039363063] [2021-11-20 05:56:29,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039363063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:29,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:29,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 22 [2021-11-20 05:56:29,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616813218] [2021-11-20 05:56:29,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:29,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 05:56:29,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 05:56:29,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2021-11-20 05:56:29,633 INFO L87 Difference]: Start difference. First operand 151 states and 170 transitions. Second operand has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:56:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:30,929 INFO L93 Difference]: Finished difference Result 206 states and 231 transitions. [2021-11-20 05:56:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 05:56:30,931 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 64 [2021-11-20 05:56:30,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:30,932 INFO L225 Difference]: With dead ends: 206 [2021-11-20 05:56:30,933 INFO L226 Difference]: Without dead ends: 206 [2021-11-20 05:56:30,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-11-20 05:56:30,934 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 93 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:30,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 850 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 157 Invalid, 0 Unknown, 223 Unchecked, 0.7s Time] [2021-11-20 05:56:30,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-20 05:56:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 152. [2021-11-20 05:56:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 128 states have (on average 1.2265625) internal successors, (157), 139 states have internal predecessors, (157), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2021-11-20 05:56:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 171 transitions. [2021-11-20 05:56:30,941 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 171 transitions. Word has length 64 [2021-11-20 05:56:30,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:30,942 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 171 transitions. [2021-11-20 05:56:30,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:56:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 171 transitions. [2021-11-20 05:56:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-20 05:56:30,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:30,943 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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 05:56:30,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:31,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:31,160 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:56:31,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:31,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1038162742, now seen corresponding path program 1 times [2021-11-20 05:56:31,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:31,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970962993] [2021-11-20 05:56:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:31,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:31,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:31,162 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:31,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-20 05:56:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:31,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-20 05:56:31,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:31,531 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 05:56:31,532 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 24 treesize of output 24 [2021-11-20 05:56:31,801 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 15 treesize of output 11 [2021-11-20 05:56:32,035 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-20 05:56:32,035 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 25 treesize of output 24 [2021-11-20 05:56:32,360 INFO L354 Elim1Store]: treesize reduction 84, result has 20.8 percent of original size [2021-11-20 05:56:32,360 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 37 treesize of output 39 [2021-11-20 05:56:32,829 INFO L354 Elim1Store]: treesize reduction 126, result has 18.2 percent of original size [2021-11-20 05:56:32,830 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 6 case distinctions, treesize of input 43 treesize of output 48 [2021-11-20 05:56:33,386 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-11-20 05:56:33,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 60 [2021-11-20 05:56:34,087 INFO L354 Elim1Store]: treesize reduction 291, result has 14.4 percent of original size [2021-11-20 05:56:34,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 75 [2021-11-20 05:56:34,933 INFO L354 Elim1Store]: treesize reduction 360, result has 13.3 percent of original size [2021-11-20 05:56:34,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 84 [2021-11-20 05:56:35,896 INFO L354 Elim1Store]: treesize reduction 462, result has 12.2 percent of original size [2021-11-20 05:56:35,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 79 treesize of output 96 [2021-11-20 05:56:37,094 INFO L354 Elim1Store]: treesize reduction 544, result has 11.8 percent of original size [2021-11-20 05:56:37,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2021-11-20 05:57:01,092 INFO L354 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2021-11-20 05:57:01,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 91 treesize of output 31 [2021-11-20 05:57:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:57:01,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:27,473 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 80 treesize of output 78 [2021-11-20 05:57:27,479 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 13676 treesize of output 13672 [2021-11-20 05:57:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 100 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 05:57:29,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:29,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970962993] [2021-11-20 05:57:29,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970962993] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:57:29,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:57:29,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24] total 51 [2021-11-20 05:57:29,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067164602] [2021-11-20 05:57:29,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:29,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-20 05:57:29,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:29,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-20 05:57:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=2040, Unknown=8, NotChecked=0, Total=2652 [2021-11-20 05:57:29,880 INFO L87 Difference]: Start difference. First operand 152 states and 171 transitions. Second operand has 52 states, 51 states have (on average 2.2941176470588234) internal successors, (117), 52 states have internal predecessors, (117), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:57:32,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:32,182 INFO L93 Difference]: Finished difference Result 183 states and 200 transitions. [2021-11-20 05:57:32,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 05:57:32,183 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.2941176470588234) internal successors, (117), 52 states have internal predecessors, (117), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 63 [2021-11-20 05:57:32,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:32,184 INFO L225 Difference]: With dead ends: 183 [2021-11-20 05:57:32,184 INFO L226 Difference]: Without dead ends: 183 [2021-11-20 05:57:32,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 51.3s TimeCoverageRelationStatistics Valid=621, Invalid=2341, Unknown=8, NotChecked=0, Total=2970 [2021-11-20 05:57:32,186 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 93 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:32,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 855 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 205 Invalid, 0 Unknown, 205 Unchecked, 1.6s Time] [2021-11-20 05:57:32,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-20 05:57:32,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 165. [2021-11-20 05:57:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 138 states have (on average 1.2246376811594204) internal successors, (169), 150 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 9 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:57:32,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 186 transitions. [2021-11-20 05:57:32,193 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 186 transitions. Word has length 63 [2021-11-20 05:57:32,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:32,194 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 186 transitions. [2021-11-20 05:57:32,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.2941176470588234) internal successors, (117), 52 states have internal predecessors, (117), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:57:32,194 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 186 transitions. [2021-11-20 05:57:32,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 05:57:32,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:32,196 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:32,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:32,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:32,409 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:57:32,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash -694648556, now seen corresponding path program 1 times [2021-11-20 05:57:32,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:32,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071987328] [2021-11-20 05:57:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:32,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:32,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:32,411 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:32,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-20 05:57:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:32,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 05:57:32,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:32,764 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 05:57:32,919 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 05:57:33,092 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 16 treesize of output 10 [2021-11-20 05:57:33,362 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 23 treesize of output 15 [2021-11-20 05:57:33,426 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-20 05:57:33,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-20 05:57:34,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:34,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071987328] [2021-11-20 05:57:34,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071987328] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:57:34,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:57:34,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2021-11-20 05:57:34,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143578879] [2021-11-20 05:57:34,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:34,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:57:34,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:34,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:57:34,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-11-20 05:57:34,243 INFO L87 Difference]: Start difference. First operand 165 states and 186 transitions. Second operand has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:57:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:36,746 INFO L93 Difference]: Finished difference Result 208 states and 229 transitions. [2021-11-20 05:57:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 05:57:36,747 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 65 [2021-11-20 05:57:36,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:36,749 INFO L225 Difference]: With dead ends: 208 [2021-11-20 05:57:36,749 INFO L226 Difference]: Without dead ends: 208 [2021-11-20 05:57:36,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=165, Invalid=1167, Unknown=0, NotChecked=0, Total=1332 [2021-11-20 05:57:36,751 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 173 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:36,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 741 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 647 Invalid, 0 Unknown, 54 Unchecked, 1.5s Time] [2021-11-20 05:57:36,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-20 05:57:36,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 166. [2021-11-20 05:57:36,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 139 states have (on average 1.223021582733813) internal successors, (170), 151 states have internal predecessors, (170), 6 states have call successors, (6), 5 states have call predecessors, (6), 9 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:57:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 187 transitions. [2021-11-20 05:57:36,760 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 187 transitions. Word has length 65 [2021-11-20 05:57:36,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:36,761 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 187 transitions. [2021-11-20 05:57:36,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 17 states have internal predecessors, (54), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:57:36,761 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 187 transitions. [2021-11-20 05:57:36,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-20 05:57:36,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:36,762 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-11-20 05:57:36,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:36,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:36,977 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:57:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:36,978 INFO L85 PathProgramCache]: Analyzing trace with hash -2118273797, now seen corresponding path program 1 times [2021-11-20 05:57:36,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:36,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894638373] [2021-11-20 05:57:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:36,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:36,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:36,981 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:37,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-20 05:57:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:37,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 05:57:37,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:37,272 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 15 treesize of output 11 [2021-11-20 05:57:37,378 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-20 05:57:37,379 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 25 treesize of output 24 [2021-11-20 05:57:37,587 INFO L354 Elim1Store]: treesize reduction 84, result has 20.8 percent of original size [2021-11-20 05:57:37,587 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 37 treesize of output 39 [2021-11-20 05:57:37,877 INFO L354 Elim1Store]: treesize reduction 156, result has 17.9 percent of original size [2021-11-20 05:57:37,877 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 6 case distinctions, treesize of input 49 treesize of output 54 [2021-11-20 05:57:38,280 INFO L354 Elim1Store]: treesize reduction 246, result has 15.8 percent of original size [2021-11-20 05:57:38,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 69 [2021-11-20 05:57:38,768 INFO L354 Elim1Store]: treesize reduction 270, result has 14.6 percent of original size [2021-11-20 05:57:38,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 72 [2021-11-20 05:57:39,384 INFO L354 Elim1Store]: treesize reduction 360, result has 13.3 percent of original size [2021-11-20 05:57:39,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 84 [2021-11-20 05:57:40,170 INFO L354 Elim1Store]: treesize reduction 489, result has 12.1 percent of original size [2021-11-20 05:57:40,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 82 treesize of output 99 [2021-11-20 05:57:41,111 INFO L354 Elim1Store]: treesize reduction 544, result has 11.8 percent of original size [2021-11-20 05:57:41,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2021-11-20 05:58:06,363 INFO L354 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2021-11-20 05:58:06,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 91 treesize of output 31 [2021-11-20 05:58:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 4 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:58:06,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:58:59,582 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 80 treesize of output 78 [2021-11-20 05:58:59,594 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 212 treesize of output 208 [2021-11-20 05:59:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 100 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:59:00,740 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:59:00,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894638373] [2021-11-20 05:59:00,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894638373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:59:00,741 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:59:00,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 45 [2021-11-20 05:59:00,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132762734] [2021-11-20 05:59:00,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:59:00,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-20 05:59:00,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:59:00,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-20 05:59:00,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=1527, Unknown=24, NotChecked=0, Total=2070 [2021-11-20 05:59:00,743 INFO L87 Difference]: Start difference. First operand 166 states and 187 transitions. Second operand has 46 states, 45 states have (on average 2.422222222222222) internal successors, (109), 46 states have internal predecessors, (109), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:59:06,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:59:09,930 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 05:59:11,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:59:11,053 INFO L93 Difference]: Finished difference Result 189 states and 206 transitions. [2021-11-20 05:59:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 05:59:11,054 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.422222222222222) internal successors, (109), 46 states have internal predecessors, (109), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 64 [2021-11-20 05:59:11,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:59:11,057 INFO L225 Difference]: With dead ends: 189 [2021-11-20 05:59:11,057 INFO L226 Difference]: Without dead ends: 189 [2021-11-20 05:59:11,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 79.9s TimeCoverageRelationStatistics Valid=663, Invalid=1965, Unknown=24, NotChecked=0, Total=2652 [2021-11-20 05:59:11,059 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 204 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 72 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:59:11,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 776 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 859 Invalid, 1 Unknown, 37 Unchecked, 8.5s Time] [2021-11-20 05:59:11,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-20 05:59:11,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 167. [2021-11-20 05:59:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 140 states have (on average 1.2142857142857142) internal successors, (170), 152 states have internal predecessors, (170), 6 states have call successors, (6), 5 states have call predecessors, (6), 9 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) [2021-11-20 05:59:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2021-11-20 05:59:11,071 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 64 [2021-11-20 05:59:11,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:59:11,072 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2021-11-20 05:59:11,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.422222222222222) internal successors, (109), 46 states have internal predecessors, (109), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 05:59:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2021-11-20 05:59:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 05:59:11,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:59:11,074 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:59:11,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-20 05:59:11,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:59:11,290 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:59:11,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:59:11,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1710824198, now seen corresponding path program 1 times [2021-11-20 05:59:11,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:59:11,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427554278] [2021-11-20 05:59:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:11,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:59:11,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:59:11,293 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:59:11,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-20 05:59:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:11,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:59:11,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:59:11,861 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-20 05:59:11,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:59:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-20 05:59:12,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:59:12,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427554278] [2021-11-20 05:59:12,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427554278] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:59:12,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:59:12,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-20 05:59:12,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861685792] [2021-11-20 05:59:12,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:59:12,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:59:12,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:59:12,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:59:12,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:59:12,294 INFO L87 Difference]: Start difference. First operand 167 states and 187 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:59:12,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:59:12,803 INFO L93 Difference]: Finished difference Result 393 states and 448 transitions. [2021-11-20 05:59:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:59:12,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 66 [2021-11-20 05:59:12,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:59:12,806 INFO L225 Difference]: With dead ends: 393 [2021-11-20 05:59:12,807 INFO L226 Difference]: Without dead ends: 393 [2021-11-20 05:59:12,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:59:12,808 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 577 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:59:12,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 467 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:59:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-20 05:59:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 181. [2021-11-20 05:59:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 164 states have internal predecessors, (183), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2021-11-20 05:59:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 206 transitions. [2021-11-20 05:59:12,818 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 206 transitions. Word has length 66 [2021-11-20 05:59:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:59:12,819 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 206 transitions. [2021-11-20 05:59:12,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:59:12,819 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 206 transitions. [2021-11-20 05:59:12,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 05:59:12,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:59:12,820 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 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] [2021-11-20 05:59:12,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-20 05:59:13,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:59:13,036 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 05:59:13,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:59:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash -59268648, now seen corresponding path program 1 times [2021-11-20 05:59:13,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:59:13,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805146950] [2021-11-20 05:59:13,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:59:13,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:59:13,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:59:13,039 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:59:13,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-20 05:59:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:59:13,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 05:59:13,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:59:13,275 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 05:59:13,855 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 05:59:13,856 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 28 treesize of output 35 [2021-11-20 05:59:14,051 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 31 treesize of output 27 [2021-11-20 05:59:14,279 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 05:59:14,279 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 40 treesize of output 32 [2021-11-20 05:59:18,618 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 34 treesize of output 22 [2021-11-20 05:59:18,734 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-20 05:59:18,735 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 36 treesize of output 39 [2021-11-20 05:59:18,812 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:59:18,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:59:30,595 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-11-20 05:59:30,595 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:59:30,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805146950] [2021-11-20 05:59:30,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805146950] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:59:30,596 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:59:30,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2021-11-20 05:59:30,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922634543] [2021-11-20 05:59:30,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:59:30,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-20 05:59:30,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:59:30,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-20 05:59:30,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=718, Unknown=5, NotChecked=0, Total=812 [2021-11-20 05:59:30,598 INFO L87 Difference]: Start difference. First operand 181 states and 206 transitions. Second operand has 29 states, 28 states have (on average 2.25) internal successors, (63), 25 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 06:00:04,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:00:04,720 INFO L93 Difference]: Finished difference Result 227 states and 252 transitions. [2021-11-20 06:00:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 06:00:04,721 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.25) internal successors, (63), 25 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 66 [2021-11-20 06:00:04,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:00:04,722 INFO L225 Difference]: With dead ends: 227 [2021-11-20 06:00:04,722 INFO L226 Difference]: Without dead ends: 227 [2021-11-20 06:00:04,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 48.0s TimeCoverageRelationStatistics Valid=260, Invalid=1978, Unknown=18, NotChecked=0, Total=2256 [2021-11-20 06:00:04,724 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 168 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:00:04,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 929 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 793 Invalid, 0 Unknown, 311 Unchecked, 1.8s Time] [2021-11-20 06:00:04,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-20 06:00:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 182. [2021-11-20 06:00:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 153 states have (on average 1.2026143790849673) internal successors, (184), 165 states have internal predecessors, (184), 8 states have call successors, (8), 5 states have call predecessors, (8), 9 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2021-11-20 06:00:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2021-11-20 06:00:04,730 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 66 [2021-11-20 06:00:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:00:04,730 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2021-11-20 06:00:04,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.25) internal successors, (63), 25 states have internal predecessors, (63), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 06:00:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2021-11-20 06:00:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 06:00:04,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:00:04,731 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 2, 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] [2021-11-20 06:00:04,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-20 06:00:04,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:00:04,937 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-11-20 06:00:04,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:00:04,937 INFO L85 PathProgramCache]: Analyzing trace with hash 459927407, now seen corresponding path program 2 times [2021-11-20 06:00:04,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:00:04,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940557752] [2021-11-20 06:00:04,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:00:04,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:00:04,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:00:04,938 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:00:04,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f1dfb76-d879-4396-9d8e-11dfc2494f73/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-20 06:00:05,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:00:05,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:00:05,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 06:00:05,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:00:05,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-20 06:00:05,322 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-11-20 06:00:05,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-11-20 06:00:05,508 INFO L354 Elim1Store]: treesize reduction 72, result has 20.9 percent of original size [2021-11-20 06:00:05,508 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 3 case distinctions, treesize of input 34 treesize of output 36 [2021-11-20 06:00:05,768 INFO L354 Elim1Store]: treesize reduction 141, result has 18.0 percent of original size [2021-11-20 06:00:05,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 51 [2021-11-20 06:00:06,104 INFO L354 Elim1Store]: treesize reduction 192, result has 16.2 percent of original size [2021-11-20 06:00:06,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 60 [2021-11-20 06:00:06,544 INFO L354 Elim1Store]: treesize reduction 291, result has 14.4 percent of original size [2021-11-20 06:00:06,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 64 treesize of output 75 [2021-11-20 06:00:07,087 INFO L354 Elim1Store]: treesize reduction 360, result has 13.3 percent of original size [2021-11-20 06:00:07,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 84 [2021-11-20 06:00:07,751 INFO L354 Elim1Store]: treesize reduction 462, result has 12.2 percent of original size [2021-11-20 06:00:07,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 79 treesize of output 96 [2021-11-20 06:00:08,554 INFO L354 Elim1Store]: treesize reduction 544, result has 11.8 percent of original size [2021-11-20 06:00:08,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 86 treesize of output 106 [2021-11-20 06:00:34,181 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 06:00:35,049 INFO L354 Elim1Store]: treesize reduction 432, result has 0.2 percent of original size [2021-11-20 06:00:35,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 91 treesize of output 31 [2021-11-20 06:00:35,220 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-20 06:00:35,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 25 treesize of output 33 [2021-11-20 06:00:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 2 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:00:35,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:00:39,966 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 45 treesize of output 41