./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y --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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:46:33,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:46:33,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:46:33,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:46:33,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:46:33,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:46:33,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:46:33,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:46:33,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:46:33,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:46:33,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:46:33,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:46:33,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:46:33,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:46:33,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:46:33,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:46:33,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:46:33,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:46:33,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:46:33,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:46:33,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:46:33,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:46:33,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:46:33,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:46:33,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:46:33,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:46:33,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:46:33,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:46:33,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:46:33,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:46:33,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:46:33,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:46:33,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:46:33,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:46:33,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:46:33,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:46:33,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:46:33,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:46:33,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:46:33,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:46:33,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:46:33,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:46:33,655 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:46:33,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:46:33,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:46:33,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:46:33,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:46:33,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:46:33,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:46:33,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:46:33,683 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:46:33,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:46:33,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:46:33,685 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:46:33,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:46:33,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:46:33,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:46:33,686 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:46:33,686 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:46:33,686 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:46:33,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:46:33,687 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:46:33,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:46:33,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:46:33,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:46:33,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:46:33,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:46:33,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:46:33,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:46:33,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:46:33,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:46:33,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:46:33,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:46:33,691 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_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2021-11-13 17:46:33,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:46:33,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:46:33,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:46:33,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:46:33,966 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:46:33,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-13 17:46:34,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/data/09e9ae932/ab4c1349d221433e98a9c3ed385b3e28/FLAGbfc86c7eb [2021-11-13 17:46:34,677 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:46:34,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-13 17:46:34,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/data/09e9ae932/ab4c1349d221433e98a9c3ed385b3e28/FLAGbfc86c7eb [2021-11-13 17:46:34,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/data/09e9ae932/ab4c1349d221433e98a9c3ed385b3e28 [2021-11-13 17:46:34,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:46:34,905 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:46:34,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:46:34,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:46:34,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:46:34,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:46:34" (1/1) ... [2021-11-13 17:46:34,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518b77b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:34, skipping insertion in model container [2021-11-13 17:46:34,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:46:34" (1/1) ... [2021-11-13 17:46:34,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:46:34,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:46:35,433 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-13 17:46:35,569 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-13 17:46:35,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:46:35,591 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) [2021-11-13 17:46:35,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d177c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:35, skipping insertion in model container [2021-11-13 17:46:35,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:46:35,592 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 17:46:35,594 INFO L158 Benchmark]: Toolchain (without parser) took 687.62ms. Allocated memory is still 94.4MB. Free memory was 69.6MB in the beginning and 57.7MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:46:35,595 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 67.5MB in the beginning and 67.5MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:46:35,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 685.38ms. Allocated memory is still 94.4MB. Free memory was 69.3MB in the beginning and 57.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:46:35,597 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 67.5MB in the beginning and 67.5MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 685.38ms. Allocated memory is still 94.4MB. Free memory was 69.3MB in the beginning and 57.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y --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 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:46:37,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:46:37,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:46:37,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:46:37,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:46:37,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:46:37,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:46:37,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:46:37,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:46:37,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:46:37,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:46:37,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:46:37,984 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:46:37,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:46:37,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:46:37,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:46:37,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:46:37,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:46:37,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:46:38,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:46:38,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:46:38,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:46:38,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:46:38,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:46:38,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:46:38,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:46:38,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:46:38,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:46:38,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:46:38,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:46:38,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:46:38,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:46:38,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:46:38,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:46:38,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:46:38,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:46:38,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:46:38,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:46:38,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:46:38,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:46:38,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:46:38,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:46:38,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:46:38,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:46:38,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:46:38,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:46:38,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:46:38,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:46:38,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:46:38,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:46:38,096 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:46:38,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:46:38,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:46:38,098 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:46:38,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:46:38,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:46:38,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:46:38,099 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:46:38,100 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:46:38,100 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:46:38,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:46:38,100 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:46:38,101 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:46:38,101 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:46:38,101 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:46:38,101 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:46:38,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:46:38,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:46:38,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:46:38,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:46:38,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:46:38,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:46:38,103 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:46:38,104 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:46:38,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:46:38,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:46:38,105 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_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a814f1cabb0a814aaaa0ad04ef0792a07c6fb7c73876a2da6ae85372115ff6c [2021-11-13 17:46:38,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:46:38,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:46:38,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:46:38,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:46:38,506 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:46:38,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-13 17:46:38,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/data/80713b786/3be4f2de9ea4434b895ba318a261c892/FLAGcd3dd7640 [2021-11-13 17:46:39,308 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:46:39,312 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i [2021-11-13 17:46:39,338 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/data/80713b786/3be4f2de9ea4434b895ba318a261c892/FLAGcd3dd7640 [2021-11-13 17:46:39,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/data/80713b786/3be4f2de9ea4434b895ba318a261c892 [2021-11-13 17:46:39,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:46:39,496 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:46:39,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:46:39,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:46:39,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:46:39,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:46:39" (1/1) ... [2021-11-13 17:46:39,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ed9ebb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:39, skipping insertion in model container [2021-11-13 17:46:39,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:46:39" (1/1) ... [2021-11-13 17:46:39,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:46:39,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:46:40,005 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-13 17:46:40,110 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-13 17:46:40,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:46:40,130 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 17:46:40,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:46:40,177 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-13 17:46:40,271 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-13 17:46:40,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:46:40,298 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:46:40,348 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[33021,33034] [2021-11-13 17:46:40,439 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test3-1.i[44590,44603] [2021-11-13 17:46:40,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:46:40,494 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:46:40,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:40 WrapperNode [2021-11-13 17:46:40,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:46:40,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:46:40,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:46:40,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:46:40,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:40" (1/1) ... [2021-11-13 17:46:40,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:40" (1/1) ... [2021-11-13 17:46:40,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:40" (1/1) ... [2021-11-13 17:46:40,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:40" (1/1) ... [2021-11-13 17:46:40,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:40" (1/1) ... [2021-11-13 17:46:40,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:40" (1/1) ... [2021-11-13 17:46:40,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:40" (1/1) ... [2021-11-13 17:46:40,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:46:40,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:46:40,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:46:40,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:46:40,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:40" (1/1) ... [2021-11-13 17:46:40,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:46:40,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:46:40,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:46:40,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:46:40,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:46:40,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:46:40,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:46:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:46:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:46:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:46:40,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:46:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:46:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:46:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:46:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 17:46:40,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:46:40,902 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:46:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 17:46:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 17:46:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 17:46:40,902 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 17:46:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 17:46:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 17:46:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 17:46:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 17:46:40,903 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 17:46:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 17:46:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 17:46:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 17:46:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 17:46:40,904 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 17:46:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 17:46:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 17:46:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 17:46:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 17:46:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 17:46:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 17:46:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 17:46:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 17:46:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 17:46:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 17:46:40,908 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 17:46:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 17:46:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 17:46:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 17:46:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 17:46:40,909 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 17:46:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 17:46:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 17:46:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 17:46:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 17:46:40,910 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 17:46:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 17:46:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 17:46:40,911 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 17:46:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 17:46:40,912 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 17:46:40,913 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 17:46:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 17:46:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 17:46:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 17:46:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 17:46:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 17:46:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 17:46:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 17:46:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 17:46:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 17:46:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 17:46:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:46:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:46:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:46:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:46:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:46:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:46:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:46:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:46:40,921 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:46:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:46:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:46:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:46:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:46:40,923 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:46:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:46:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:46:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:46:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:46:40,924 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:46:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:46:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:46:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:46:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:46:40,925 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:46:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:46:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:46:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:46:40,926 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:46:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:46:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:46:40,927 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:46:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:46:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:46:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:46:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:46:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:46:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:46:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:46:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:46:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:46:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:46:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:46:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:46:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:46:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:46:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:46:40,930 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:46:40,931 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:46:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:46:40,932 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:46:40,933 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:46:40,933 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:46:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:46:40,938 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:46:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:46:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:46:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:46:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:46:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:46:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:46:40,941 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:46:40,946 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:46:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:46:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:46:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:46:40,947 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:46:40,948 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:46:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:46:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:46:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:46:40,949 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:46:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:46:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:46:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:46:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:46:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:46:40,950 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:46:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:46:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:46:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:46:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:46:40,951 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:46:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:46:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:46:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:46:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:46:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:46:40,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:46:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:46:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:46:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:46:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:46:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:46:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:46:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:46:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:46:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:46:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:46:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:46:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:46:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:46:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:46:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:46:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:46:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:46:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:46:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:46:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:46:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:46:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:46:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:46:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:46:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:46:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 17:46:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:46:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:46:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:46:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:46:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:46:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:46:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:46:40,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:46:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:46:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:46:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:46:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:46:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:46:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:46:41,641 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:46:46,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:46:46,882 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-13 17:46:46,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:46:46 BoogieIcfgContainer [2021-11-13 17:46:46,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:46:46,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:46:46,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:46:46,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:46:46,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:46:39" (1/3) ... [2021-11-13 17:46:46,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538b7c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:46:46, skipping insertion in model container [2021-11-13 17:46:46,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:46:40" (2/3) ... [2021-11-13 17:46:46,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538b7c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:46:46, skipping insertion in model container [2021-11-13 17:46:46,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:46:46" (3/3) ... [2021-11-13 17:46:46,894 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test3-1.i [2021-11-13 17:46:46,899 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:46:46,899 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 534 error locations. [2021-11-13 17:46:46,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:46:46,951 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 [2021-11-13 17:46:46,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 534 error locations. [2021-11-13 17:46:46,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 1080 states, 532 states have (on average 2.2406015037593985) internal successors, (1192), 1068 states have internal predecessors, (1192), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-13 17:46:46,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 17:46:46,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:46,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:46,997 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:46:47,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:47,002 INFO L85 PathProgramCache]: Analyzing trace with hash 976431319, now seen corresponding path program 1 times [2021-11-13 17:46:47,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:46:47,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559857737] [2021-11-13 17:46:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:47,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:46:47,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:46:47,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:46:47,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:46:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:47,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:46:47,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:47,424 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 [2021-11-13 17:46:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:46:47,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:46:47,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:47,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559857737] [2021-11-13 17:46:47,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559857737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:47,498 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:47,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:46:47,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201174992] [2021-11-13 17:46:47,500 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:47,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:46:47,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:46:47,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:46:47,536 INFO L87 Difference]: Start difference. First operand has 1080 states, 532 states have (on average 2.2406015037593985) internal successors, (1192), 1068 states have internal predecessors, (1192), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:46:49,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:49,582 INFO L93 Difference]: Finished difference Result 1075 states and 1140 transitions. [2021-11-13 17:46:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:46:49,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-13 17:46:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:49,612 INFO L225 Difference]: With dead ends: 1075 [2021-11-13 17:46:49,612 INFO L226 Difference]: Without dead ends: 1072 [2021-11-13 17:46:49,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:46:49,618 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 978 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1590.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.15ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1937.78ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:49,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 741 Invalid, 559 Unknown, 0 Unchecked, 19.15ms Time], IncrementalHoareTripleChecker [16 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 1937.78ms Time] [2021-11-13 17:46:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-13 17:46:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1064. [2021-11-13 17:46:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 532 states have (on average 2.0845864661654137) internal successors, (1109), 1053 states have internal predecessors, (1109), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:46:49,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1130 transitions. [2021-11-13 17:46:49,717 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1130 transitions. Word has length 7 [2021-11-13 17:46:49,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:49,718 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1130 transitions. [2021-11-13 17:46:49,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:46:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1130 transitions. [2021-11-13 17:46:49,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-13 17:46:49,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:49,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:49,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:49,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:46:49,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:46:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:49,934 INFO L85 PathProgramCache]: Analyzing trace with hash 976431320, now seen corresponding path program 1 times [2021-11-13 17:46:49,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:46:49,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [177162927] [2021-11-13 17:46:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:49,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:46:49,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:46:49,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:46:49,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:46:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:50,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:46:50,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:50,191 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 [2021-11-13 17:46:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:46:50,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:50,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:46:50,289 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:50,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [177162927] [2021-11-13 17:46:50,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [177162927] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:50,290 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:50,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:46:50,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604049426] [2021-11-13 17:46:50,293 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:50,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:46:50,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:50,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:46:50,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:46:50,298 INFO L87 Difference]: Start difference. First operand 1064 states and 1130 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:46:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:55,753 INFO L93 Difference]: Finished difference Result 1538 states and 1638 transitions. [2021-11-13 17:46:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:46:55,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-13 17:46:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:55,765 INFO L225 Difference]: With dead ends: 1538 [2021-11-13 17:46:55,765 INFO L226 Difference]: Without dead ends: 1538 [2021-11-13 17:46:55,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:46:55,767 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 1143 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4745.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.00ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5357.67ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:55,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1145 Valid, 1637 Invalid, 1090 Unknown, 0 Unchecked, 23.00ms Time], IncrementalHoareTripleChecker [18 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 5357.67ms Time] [2021-11-13 17:46:55,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-11-13 17:46:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1099. [2021-11-13 17:46:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 576 states have (on average 2.0625) internal successors, (1188), 1088 states have internal predecessors, (1188), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:46:55,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1209 transitions. [2021-11-13 17:46:55,817 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1209 transitions. Word has length 7 [2021-11-13 17:46:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:55,817 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1209 transitions. [2021-11-13 17:46:55,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:46:55,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1209 transitions. [2021-11-13 17:46:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:46:55,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:55,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:55,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:56,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:46:56,028 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:46:56,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:56,029 INFO L85 PathProgramCache]: Analyzing trace with hash -499465612, now seen corresponding path program 1 times [2021-11-13 17:46:56,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:46:56,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935685032] [2021-11-13 17:46:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:56,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:46:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:46:56,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:46:56,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:46:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:56,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:46:56,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:56,266 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 [2021-11-13 17:46:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:46:56,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:46:56,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:56,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935685032] [2021-11-13 17:46:56,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935685032] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:56,333 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:56,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:46:56,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831385118] [2021-11-13 17:46:56,334 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:56,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:46:56,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:56,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:46:56,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:46:56,338 INFO L87 Difference]: Start difference. First operand 1099 states and 1209 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:46:58,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:46:58,573 INFO L93 Difference]: Finished difference Result 1427 states and 1562 transitions. [2021-11-13 17:46:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:46:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 17:46:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:46:58,584 INFO L225 Difference]: With dead ends: 1427 [2021-11-13 17:46:58,584 INFO L226 Difference]: Without dead ends: 1427 [2021-11-13 17:46:58,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:46:58,586 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 980 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1840.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.46ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2178.91ms IncrementalHoareTripleChecker+Time [2021-11-13 17:46:58,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 1235 Invalid, 770 Unknown, 0 Unchecked, 9.46ms Time], IncrementalHoareTripleChecker [54 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2178.91ms Time] [2021-11-13 17:46:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-11-13 17:46:58,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1050. [2021-11-13 17:46:58,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 576 states have (on average 1.9722222222222223) internal successors, (1136), 1039 states have internal predecessors, (1136), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:46:58,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1157 transitions. [2021-11-13 17:46:58,621 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1157 transitions. Word has length 12 [2021-11-13 17:46:58,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:46:58,622 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1157 transitions. [2021-11-13 17:46:58,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:46:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1157 transitions. [2021-11-13 17:46:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:46:58,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:46:58,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:46:58,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:46:58,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:46:58,828 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:46:58,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:46:58,830 INFO L85 PathProgramCache]: Analyzing trace with hash -499465611, now seen corresponding path program 1 times [2021-11-13 17:46:58,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:46:58,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477454058] [2021-11-13 17:46:58,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:46:58,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:46:58,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:46:58,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:46:58,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:46:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:46:59,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:46:59,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:46:59,044 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 [2021-11-13 17:46:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:46:59,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:46:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:46:59,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:46:59,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477454058] [2021-11-13 17:46:59,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477454058] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:46:59,184 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:46:59,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:46:59,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933924714] [2021-11-13 17:46:59,184 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:46:59,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:46:59,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:46:59,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:46:59,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:46:59,186 INFO L87 Difference]: Start difference. First operand 1050 states and 1157 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:03,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:03,880 INFO L93 Difference]: Finished difference Result 1470 states and 1569 transitions. [2021-11-13 17:47:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:03,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-13 17:47:03,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:03,889 INFO L225 Difference]: With dead ends: 1470 [2021-11-13 17:47:03,890 INFO L226 Difference]: Without dead ends: 1470 [2021-11-13 17:47:03,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:03,891 INFO L933 BasicCegarLoop]: 1135 mSDtfsCounter, 1395 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4059.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.31ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4628.84ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:03,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 1578 Invalid, 787 Unknown, 0 Unchecked, 17.31ms Time], IncrementalHoareTripleChecker [15 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 4628.84ms Time] [2021-11-13 17:47:03,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-11-13 17:47:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1040. [2021-11-13 17:47:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 576 states have (on average 1.9496527777777777) internal successors, (1123), 1029 states have internal predecessors, (1123), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1144 transitions. [2021-11-13 17:47:03,928 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1144 transitions. Word has length 12 [2021-11-13 17:47:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:03,929 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1144 transitions. [2021-11-13 17:47:03,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:03,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1144 transitions. [2021-11-13 17:47:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:47:03,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:03,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:03,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:04,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:04,144 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:04,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:04,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1684895394, now seen corresponding path program 1 times [2021-11-13 17:47:04,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:04,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808960127] [2021-11-13 17:47:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:04,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:04,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:04,146 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:04,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:47:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:04,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:47:04,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:04,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:04,607 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:04,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808960127] [2021-11-13 17:47:04,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808960127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:04,608 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:04,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:47:04,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175284640] [2021-11-13 17:47:04,608 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:04,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:47:04,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:04,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:47:04,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:04,611 INFO L87 Difference]: Start difference. First operand 1040 states and 1144 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:05,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:05,585 INFO L93 Difference]: Finished difference Result 1486 states and 1622 transitions. [2021-11-13 17:47:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:47:05,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-13 17:47:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:05,597 INFO L225 Difference]: With dead ends: 1486 [2021-11-13 17:47:05,597 INFO L226 Difference]: Without dead ends: 1486 [2021-11-13 17:47:05,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:47:05,599 INFO L933 BasicCegarLoop]: 1123 mSDtfsCounter, 547 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 784.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3046 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.89ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 918.27ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:05,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 3046 Invalid, 255 Unknown, 0 Unchecked, 11.89ms Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 918.27ms Time] [2021-11-13 17:47:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-11-13 17:47:05,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1276. [2021-11-13 17:47:05,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 812 states have (on average 1.937192118226601) internal successors, (1573), 1265 states have internal predecessors, (1573), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1594 transitions. [2021-11-13 17:47:05,643 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1594 transitions. Word has length 15 [2021-11-13 17:47:05,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:05,644 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1594 transitions. [2021-11-13 17:47:05,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:05,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1594 transitions. [2021-11-13 17:47:05,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-13 17:47:05,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:05,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:05,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:05,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:05,861 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr532ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash 692149927, now seen corresponding path program 1 times [2021-11-13 17:47:05,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:05,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914242174] [2021-11-13 17:47:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:05,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:05,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:05,868 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:05,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:47:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:06,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:06,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:06,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:47:06,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:47:06,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-13 17:47:06,251 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-13 17:47:06,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-13 17:47:06,347 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-13 17:47:06,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-13 17:47:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:06,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:06,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:06,473 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:06,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914242174] [2021-11-13 17:47:06,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914242174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:06,473 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:06,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:47:06,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326301863] [2021-11-13 17:47:06,474 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:06,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:47:06,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:06,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:47:06,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:06,475 INFO L87 Difference]: Start difference. First operand 1276 states and 1594 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:08,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:08,522 INFO L93 Difference]: Finished difference Result 1639 states and 2018 transitions. [2021-11-13 17:47:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:08,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-13 17:47:08,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:08,531 INFO L225 Difference]: With dead ends: 1639 [2021-11-13 17:47:08,531 INFO L226 Difference]: Without dead ends: 1639 [2021-11-13 17:47:08,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:47:08,532 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 361 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1757.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 3809 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.85ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1987.99ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:08,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 3809 Invalid, 415 Unknown, 0 Unchecked, 6.85ms Time], IncrementalHoareTripleChecker [2 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 1987.99ms Time] [2021-11-13 17:47:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-11-13 17:47:08,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1275. [2021-11-13 17:47:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 811 states have (on average 1.93711467324291) internal successors, (1571), 1264 states have internal predecessors, (1571), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:08,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1592 transitions. [2021-11-13 17:47:08,568 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1592 transitions. Word has length 16 [2021-11-13 17:47:08,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:08,568 INFO L470 AbstractCegarLoop]: Abstraction has 1275 states and 1592 transitions. [2021-11-13 17:47:08,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:08,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1592 transitions. [2021-11-13 17:47:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-13 17:47:08,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:08,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:08,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:08,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:08,781 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:08,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1440200288, now seen corresponding path program 1 times [2021-11-13 17:47:08,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:08,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400925275] [2021-11-13 17:47:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:08,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:08,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:08,783 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:08,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:47:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:09,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:09,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:09,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:09,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:09,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400925275] [2021-11-13 17:47:09,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400925275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:09,129 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:09,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:47:09,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601735179] [2021-11-13 17:47:09,130 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:09,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:47:09,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:09,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:47:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:09,131 INFO L87 Difference]: Start difference. First operand 1275 states and 1592 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:09,170 INFO L93 Difference]: Finished difference Result 1215 states and 1506 transitions. [2021-11-13 17:47:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:47:09,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-13 17:47:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:09,179 INFO L225 Difference]: With dead ends: 1215 [2021-11-13 17:47:09,179 INFO L226 Difference]: Without dead ends: 1215 [2021-11-13 17:47:09,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:09,180 INFO L933 BasicCegarLoop]: 1014 mSDtfsCounter, 964 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.59ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:09,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 1126 Invalid, 12 Unknown, 0 Unchecked, 2.52ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 19.59ms Time] [2021-11-13 17:47:09,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-11-13 17:47:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2021-11-13 17:47:09,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 775 states have (on average 1.9161290322580644) internal successors, (1485), 1204 states have internal predecessors, (1485), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1506 transitions. [2021-11-13 17:47:09,217 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1506 transitions. Word has length 22 [2021-11-13 17:47:09,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:09,218 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 1506 transitions. [2021-11-13 17:47:09,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:09,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1506 transitions. [2021-11-13 17:47:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-13 17:47:09,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:09,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:09,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:09,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:09,434 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1053008550, now seen corresponding path program 1 times [2021-11-13 17:47:09,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:09,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848104458] [2021-11-13 17:47:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:09,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:09,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:09,437 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:09,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:47:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:09,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:09,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:09,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:09,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:09,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848104458] [2021-11-13 17:47:09,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848104458] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:09,813 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:09,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:47:09,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418802002] [2021-11-13 17:47:09,813 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:09,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:47:09,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:09,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:47:09,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:47:09,814 INFO L87 Difference]: Start difference. First operand 1215 states and 1506 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:09,926 INFO L93 Difference]: Finished difference Result 1187 states and 1450 transitions. [2021-11-13 17:47:09,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:09,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-13 17:47:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:09,934 INFO L225 Difference]: With dead ends: 1187 [2021-11-13 17:47:09,935 INFO L226 Difference]: Without dead ends: 1187 [2021-11-13 17:47:09,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:09,936 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 1860 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.40ms SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.86ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:09,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 1988 Invalid, 78 Unknown, 0 Unchecked, 8.40ms Time], IncrementalHoareTripleChecker [46 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 63.86ms Time] [2021-11-13 17:47:09,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-13 17:47:09,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1185. [2021-11-13 17:47:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 759 states have (on average 1.8801054018445322) internal successors, (1427), 1174 states have internal predecessors, (1427), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:09,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1448 transitions. [2021-11-13 17:47:09,966 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1448 transitions. Word has length 24 [2021-11-13 17:47:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:09,966 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1448 transitions. [2021-11-13 17:47:09,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1448 transitions. [2021-11-13 17:47:09,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 17:47:09,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:09,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:09,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:10,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:10,181 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash 646849896, now seen corresponding path program 1 times [2021-11-13 17:47:10,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:10,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535554312] [2021-11-13 17:47:10,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:10,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:10,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:10,183 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:10,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:47:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:10,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:10,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:10,385 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 [2021-11-13 17:47:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:10,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:10,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:10,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:10,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535554312] [2021-11-13 17:47:10,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535554312] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:10,642 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:10,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:47:10,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667853980] [2021-11-13 17:47:10,642 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:10,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:47:10,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:47:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:10,644 INFO L87 Difference]: Start difference. First operand 1185 states and 1448 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:12,976 INFO L93 Difference]: Finished difference Result 1656 states and 2041 transitions. [2021-11-13 17:47:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:47:12,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-13 17:47:12,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:12,988 INFO L225 Difference]: With dead ends: 1656 [2021-11-13 17:47:12,988 INFO L226 Difference]: Without dead ends: 1656 [2021-11-13 17:47:12,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:47:12,989 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 1702 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1930.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.16ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2280.98ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:12,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1703 Valid, 1108 Invalid, 955 Unknown, 0 Unchecked, 9.16ms Time], IncrementalHoareTripleChecker [23 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 2280.98ms Time] [2021-11-13 17:47:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-13 17:47:13,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1181. [2021-11-13 17:47:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 759 states have (on average 1.8695652173913044) internal successors, (1419), 1170 states have internal predecessors, (1419), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1440 transitions. [2021-11-13 17:47:13,029 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1440 transitions. Word has length 38 [2021-11-13 17:47:13,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:13,030 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1440 transitions. [2021-11-13 17:47:13,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:13,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1440 transitions. [2021-11-13 17:47:13,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-13 17:47:13,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:13,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:13,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:13,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:13,246 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:13,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash 646849897, now seen corresponding path program 1 times [2021-11-13 17:47:13,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:13,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948888392] [2021-11-13 17:47:13,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:13,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:13,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:13,248 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:13,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:47:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:13,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:47:13,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:13,505 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 [2021-11-13 17:47:13,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:13,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:14,380 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:14,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948888392] [2021-11-13 17:47:14,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948888392] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:14,380 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:14,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:47:14,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698613000] [2021-11-13 17:47:14,381 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:14,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:47:14,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:47:14,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:14,383 INFO L87 Difference]: Start difference. First operand 1181 states and 1440 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:22,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:22,450 INFO L93 Difference]: Finished difference Result 1787 states and 2194 transitions. [2021-11-13 17:47:22,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:47:22,452 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-13 17:47:22,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:22,463 INFO L225 Difference]: With dead ends: 1787 [2021-11-13 17:47:22,464 INFO L226 Difference]: Without dead ends: 1787 [2021-11-13 17:47:22,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:47:22,465 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 1255 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6950.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.27ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7875.01ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:22,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 2963 Invalid, 2019 Unknown, 0 Unchecked, 18.27ms Time], IncrementalHoareTripleChecker [13 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 7875.01ms Time] [2021-11-13 17:47:22,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-11-13 17:47:22,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1177. [2021-11-13 17:47:22,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 759 states have (on average 1.8590250329380764) internal successors, (1411), 1166 states have internal predecessors, (1411), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1432 transitions. [2021-11-13 17:47:22,509 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1432 transitions. Word has length 38 [2021-11-13 17:47:22,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:22,510 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1432 transitions. [2021-11-13 17:47:22,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1432 transitions. [2021-11-13 17:47:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 17:47:22,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:22,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:22,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:22,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:22,737 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:22,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:22,738 INFO L85 PathProgramCache]: Analyzing trace with hash -927296089, now seen corresponding path program 1 times [2021-11-13 17:47:22,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:22,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730782707] [2021-11-13 17:47:22,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:22,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:22,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:22,741 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:22,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:47:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:23,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:23,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:23,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:23,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:23,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730782707] [2021-11-13 17:47:23,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730782707] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:23,368 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:23,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:47:23,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374467391] [2021-11-13 17:47:23,368 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:23,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:47:23,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:47:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:23,370 INFO L87 Difference]: Start difference. First operand 1177 states and 1432 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:23,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:23,455 INFO L93 Difference]: Finished difference Result 1165 states and 1412 transitions. [2021-11-13 17:47:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:23,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-11-13 17:47:23,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:23,464 INFO L225 Difference]: With dead ends: 1165 [2021-11-13 17:47:23,464 INFO L226 Difference]: Without dead ends: 1165 [2021-11-13 17:47:23,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:47:23,465 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 911 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.09ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:23,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 1966 Invalid, 41 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 59.09ms Time] [2021-11-13 17:47:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-13 17:47:23,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2021-11-13 17:47:23,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 747 states have (on average 1.8621151271753682) internal successors, (1391), 1154 states have internal predecessors, (1391), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1412 transitions. [2021-11-13 17:47:23,503 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1412 transitions. Word has length 56 [2021-11-13 17:47:23,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:23,504 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1412 transitions. [2021-11-13 17:47:23,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:23,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1412 transitions. [2021-11-13 17:47:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 17:47:23,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:23,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:23,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:23,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:23,722 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:23,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:23,723 INFO L85 PathProgramCache]: Analyzing trace with hash 548320627, now seen corresponding path program 1 times [2021-11-13 17:47:23,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:23,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104896785] [2021-11-13 17:47:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:23,724 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:23,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:23,725 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:23,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:47:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:24,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:47:24,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:24,166 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 [2021-11-13 17:47:24,174 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 [2021-11-13 17:47:25,018 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:47:25,018 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 25 treesize of output 27 [2021-11-13 17:47:25,038 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:47:25,038 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 20 [2021-11-13 17:47:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:25,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:29,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:29,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:29,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104896785] [2021-11-13 17:47:29,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104896785] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:29,855 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:29,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:47:29,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29160038] [2021-11-13 17:47:29,856 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:29,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:47:29,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:29,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:47:29,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 17:47:29,858 INFO L87 Difference]: Start difference. First operand 1165 states and 1412 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:36,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:36,074 INFO L93 Difference]: Finished difference Result 1776 states and 2121 transitions. [2021-11-13 17:47:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:47:36,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-13 17:47:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:36,086 INFO L225 Difference]: With dead ends: 1776 [2021-11-13 17:47:36,086 INFO L226 Difference]: Without dead ends: 1776 [2021-11-13 17:47:36,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-13 17:47:36,088 INFO L933 BasicCegarLoop]: 656 mSDtfsCounter, 1481 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5257.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.44ms SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1477 IncrementalHoareTripleChecker+Unchecked, 6119.32ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:36,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1485 Valid, 1882 Invalid, 2932 Unknown, 0 Unchecked, 16.44ms Time], IncrementalHoareTripleChecker [55 Valid, 1400 Invalid, 0 Unknown, 1477 Unchecked, 6119.32ms Time] [2021-11-13 17:47:36,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-11-13 17:47:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1143. [2021-11-13 17:47:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1143 states, 757 states have (on average 1.8190224570673712) internal successors, (1377), 1132 states have internal predecessors, (1377), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1398 transitions. [2021-11-13 17:47:36,130 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1398 transitions. Word has length 64 [2021-11-13 17:47:36,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:36,131 INFO L470 AbstractCegarLoop]: Abstraction has 1143 states and 1398 transitions. [2021-11-13 17:47:36,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:36,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1398 transitions. [2021-11-13 17:47:36,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 17:47:36,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:36,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:36,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:36,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:36,350 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:36,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1344844684, now seen corresponding path program 1 times [2021-11-13 17:47:36,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:36,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435842377] [2021-11-13 17:47:36,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:36,352 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:36,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:36,353 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:36,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 17:47:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:36,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:36,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:36,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:36,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-13 17:47:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:37,328 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:37,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435842377] [2021-11-13 17:47:37,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435842377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:37,329 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:37,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:47:37,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001349490] [2021-11-13 17:47:37,329 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:37,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:47:37,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:37,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:47:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:37,331 INFO L87 Difference]: Start difference. First operand 1143 states and 1398 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:39,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:39,343 INFO L93 Difference]: Finished difference Result 1141 states and 1396 transitions. [2021-11-13 17:47:39,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:39,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 66 [2021-11-13 17:47:39,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:39,349 INFO L225 Difference]: With dead ends: 1141 [2021-11-13 17:47:39,350 INFO L226 Difference]: Without dead ends: 1141 [2021-11-13 17:47:39,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:39,350 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 882 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1706.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.67ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1984.65ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:39,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 622 Invalid, 474 Unknown, 0 Unchecked, 4.67ms Time], IncrementalHoareTripleChecker [12 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 1984.65ms Time] [2021-11-13 17:47:39,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2021-11-13 17:47:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 1141. [2021-11-13 17:47:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 757 states have (on average 1.8163804491413473) internal successors, (1375), 1130 states have internal predecessors, (1375), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:39,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1396 transitions. [2021-11-13 17:47:39,382 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1396 transitions. Word has length 66 [2021-11-13 17:47:39,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:39,382 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1396 transitions. [2021-11-13 17:47:39,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:39,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1396 transitions. [2021-11-13 17:47:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 17:47:39,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:39,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:39,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-13 17:47:39,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:39,597 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:39,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash -812720204, now seen corresponding path program 1 times [2021-11-13 17:47:39,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:39,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336594530] [2021-11-13 17:47:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:39,599 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:39,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:39,600 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:39,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 17:47:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:39,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:39,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:40,017 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 [2021-11-13 17:47:40,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-13 17:47:40,061 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 24 treesize of output 12 [2021-11-13 17:47:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:40,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:40,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:40,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:40,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336594530] [2021-11-13 17:47:40,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336594530] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:40,189 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:40,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:47:40,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29503256] [2021-11-13 17:47:40,189 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:40,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:47:40,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:40,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:47:40,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:47:40,190 INFO L87 Difference]: Start difference. First operand 1141 states and 1396 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:43,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:43,199 INFO L93 Difference]: Finished difference Result 1140 states and 1395 transitions. [2021-11-13 17:47:43,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:47:43,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-13 17:47:43,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:43,206 INFO L225 Difference]: With dead ends: 1140 [2021-11-13 17:47:43,206 INFO L226 Difference]: Without dead ends: 1140 [2021-11-13 17:47:43,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:47:43,207 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 4 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2553.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2951.45ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:43,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2405 Invalid, 1309 Unknown, 0 Unchecked, 8.00ms Time], IncrementalHoareTripleChecker [1 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 2951.45ms Time] [2021-11-13 17:47:43,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2021-11-13 17:47:43,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1140. [2021-11-13 17:47:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 757 states have (on average 1.8150594451783355) internal successors, (1374), 1129 states have internal predecessors, (1374), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1395 transitions. [2021-11-13 17:47:43,229 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1395 transitions. Word has length 69 [2021-11-13 17:47:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:43,230 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 1395 transitions. [2021-11-13 17:47:43,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:43,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1395 transitions. [2021-11-13 17:47:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 17:47:43,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:43,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:43,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:43,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:43,450 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:43,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:43,450 INFO L85 PathProgramCache]: Analyzing trace with hash -812720203, now seen corresponding path program 1 times [2021-11-13 17:47:43,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:43,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311608063] [2021-11-13 17:47:43,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:43,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:43,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:43,451 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:43,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 17:47:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:43,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:47:43,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:43,772 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 [2021-11-13 17:47:43,804 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 [2021-11-13 17:47:43,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-13 17:47:43,863 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 39 treesize of output 27 [2021-11-13 17:47:43,866 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 24 treesize of output 12 [2021-11-13 17:47:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:43,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:44,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:44,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:44,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311608063] [2021-11-13 17:47:44,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311608063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:44,149 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:44,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:47:44,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735695113] [2021-11-13 17:47:44,149 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:44,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:47:44,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:44,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:47:44,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:47:44,151 INFO L87 Difference]: Start difference. First operand 1140 states and 1395 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:53,199 INFO L93 Difference]: Finished difference Result 1139 states and 1394 transitions. [2021-11-13 17:47:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:47:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-13 17:47:53,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:53,206 INFO L225 Difference]: With dead ends: 1139 [2021-11-13 17:47:53,206 INFO L226 Difference]: Without dead ends: 1139 [2021-11-13 17:47:53,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:47:53,207 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 3 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8046.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.43ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8932.74ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:53,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3436 Invalid, 2132 Unknown, 0 Unchecked, 13.43ms Time], IncrementalHoareTripleChecker [1 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 8932.74ms Time] [2021-11-13 17:47:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-13 17:47:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2021-11-13 17:47:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 756 states have (on average 1.816137566137566) internal successors, (1373), 1128 states have internal predecessors, (1373), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-13 17:47:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1394 transitions. [2021-11-13 17:47:53,233 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1394 transitions. Word has length 69 [2021-11-13 17:47:53,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:53,234 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1394 transitions. [2021-11-13 17:47:53,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1394 transitions. [2021-11-13 17:47:53,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-13 17:47:53,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:53,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:53,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:53,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:53,451 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:53,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:53,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1139648005, now seen corresponding path program 1 times [2021-11-13 17:47:53,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:53,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052123634] [2021-11-13 17:47:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:53,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:53,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:53,454 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:53,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 17:47:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:53,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:53,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:53,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:54,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:54,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052123634] [2021-11-13 17:47:54,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052123634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:54,104 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:54,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:47:54,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931333403] [2021-11-13 17:47:54,104 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:54,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:47:54,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:54,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:47:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:54,105 INFO L87 Difference]: Start difference. First operand 1139 states and 1394 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:47:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:54,241 INFO L93 Difference]: Finished difference Result 1149 states and 1407 transitions. [2021-11-13 17:47:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:47:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-13 17:47:54,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:54,251 INFO L225 Difference]: With dead ends: 1149 [2021-11-13 17:47:54,251 INFO L226 Difference]: Without dead ends: 1149 [2021-11-13 17:47:54,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:47:54,253 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 11 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2775 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.40ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.69ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:54,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2775 Invalid, 37 Unknown, 0 Unchecked, 3.40ms Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 92.69ms Time] [2021-11-13 17:47:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2021-11-13 17:47:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2021-11-13 17:47:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 764 states have (on average 1.8128272251308901) internal successors, (1385), 1137 states have internal predecessors, (1385), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-13 17:47:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1407 transitions. [2021-11-13 17:47:54,281 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1407 transitions. Word has length 77 [2021-11-13 17:47:54,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:54,282 INFO L470 AbstractCegarLoop]: Abstraction has 1149 states and 1407 transitions. [2021-11-13 17:47:54,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:47:54,282 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1407 transitions. [2021-11-13 17:47:54,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-13 17:47:54,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:54,284 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:54,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:54,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:54,500 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:54,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:54,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2077664763, now seen corresponding path program 1 times [2021-11-13 17:47:54,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:54,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060926150] [2021-11-13 17:47:54,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:54,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:54,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:54,503 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:54,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 17:47:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:54,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:47:54,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:54,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:55,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:55,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060926150] [2021-11-13 17:47:55,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060926150] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:47:55,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:47:55,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 17:47:55,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853315093] [2021-11-13 17:47:55,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:47:55,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:47:55,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:55,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:47:55,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:47:55,204 INFO L87 Difference]: Start difference. First operand 1149 states and 1407 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:47:55,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:55,667 INFO L93 Difference]: Finished difference Result 1163 states and 1425 transitions. [2021-11-13 17:47:55,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:47:55,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-13 17:47:55,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:55,675 INFO L225 Difference]: With dead ends: 1163 [2021-11-13 17:47:55,675 INFO L226 Difference]: Without dead ends: 1159 [2021-11-13 17:47:55,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:47:55,676 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 21 mSDsluCounter, 5543 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6472 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 253.21ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:55,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 6472 Invalid, 117 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [17 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 253.21ms Time] [2021-11-13 17:47:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-11-13 17:47:55,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1155. [2021-11-13 17:47:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 770 states have (on average 1.809090909090909) internal successors, (1393), 1143 states have internal predecessors, (1393), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-13 17:47:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1415 transitions. [2021-11-13 17:47:55,707 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1415 transitions. Word has length 79 [2021-11-13 17:47:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:55,707 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1415 transitions. [2021-11-13 17:47:55,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:47:55,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1415 transitions. [2021-11-13 17:47:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-13 17:47:55,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:55,709 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:55,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:55,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:55,924 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash -931774981, now seen corresponding path program 2 times [2021-11-13 17:47:55,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:55,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683346801] [2021-11-13 17:47:55,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:47:55,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:55,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:55,927 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:55,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 17:47:56,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:47:56,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:47:56,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:47:56,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:56,848 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:56,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:57,418 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:57,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:57,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683346801] [2021-11-13 17:47:57,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683346801] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:47:57,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:47:57,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 17:47:57,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413160782] [2021-11-13 17:47:57,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:47:57,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 17:47:57,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:57,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 17:47:57,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:47:57,422 INFO L87 Difference]: Start difference. First operand 1155 states and 1415 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:47:59,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:59,025 INFO L93 Difference]: Finished difference Result 1183 states and 1453 transitions. [2021-11-13 17:47:59,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 17:47:59,026 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-13 17:47:59,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:59,034 INFO L225 Difference]: With dead ends: 1183 [2021-11-13 17:47:59,034 INFO L226 Difference]: Without dead ends: 1179 [2021-11-13 17:47:59,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 17:47:59,036 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 89 mSDsluCounter, 6507 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 562.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 7440 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.71ms SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 643.57ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:59,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 7440 Invalid, 373 Unknown, 0 Unchecked, 7.71ms Time], IncrementalHoareTripleChecker [65 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 643.57ms Time] [2021-11-13 17:47:59,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2021-11-13 17:47:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1167. [2021-11-13 17:47:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 782 states have (on average 1.8017902813299234) internal successors, (1409), 1155 states have internal predecessors, (1409), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-13 17:47:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1431 transitions. [2021-11-13 17:47:59,068 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1431 transitions. Word has length 83 [2021-11-13 17:47:59,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:59,069 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1431 transitions. [2021-11-13 17:47:59,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:47:59,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1431 transitions. [2021-11-13 17:47:59,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-13 17:47:59,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:59,071 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:59,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:59,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:59,286 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:47:59,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:59,286 INFO L85 PathProgramCache]: Analyzing trace with hash -351179269, now seen corresponding path program 3 times [2021-11-13 17:47:59,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:59,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794411036] [2021-11-13 17:47:59,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:47:59,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:59,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:59,288 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:59,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 17:48:00,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 17:48:00,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:48:00,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 17:48:00,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:48:00,732 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:48:00,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:48:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:48:02,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:48:02,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794411036] [2021-11-13 17:48:02,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794411036] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:48:02,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:48:02,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 17:48:02,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26401138] [2021-11-13 17:48:02,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:48:02,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 17:48:02,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:48:02,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 17:48:02,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 17:48:02,629 INFO L87 Difference]: Start difference. First operand 1167 states and 1431 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:48:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:48:11,567 INFO L93 Difference]: Finished difference Result 1223 states and 1515 transitions. [2021-11-13 17:48:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 17:48:11,568 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-13 17:48:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:48:11,577 INFO L225 Difference]: With dead ends: 1223 [2021-11-13 17:48:11,577 INFO L226 Difference]: Without dead ends: 1217 [2021-11-13 17:48:11,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 17:48:11,580 INFO L933 BasicCegarLoop]: 940 mSDtfsCounter, 216 mSDsluCounter, 14963 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2314.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 15903 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.89ms SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2625.90ms IncrementalHoareTripleChecker+Time [2021-11-13 17:48:11,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 15903 Invalid, 1436 Unknown, 0 Unchecked, 18.89ms Time], IncrementalHoareTripleChecker [183 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 2625.90ms Time] [2021-11-13 17:48:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-13 17:48:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1191. [2021-11-13 17:48:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 806 states have (on average 1.7866004962779156) internal successors, (1440), 1179 states have internal predecessors, (1440), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-13 17:48:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1462 transitions. [2021-11-13 17:48:11,614 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1462 transitions. Word has length 91 [2021-11-13 17:48:11,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:48:11,615 INFO L470 AbstractCegarLoop]: Abstraction has 1191 states and 1462 transitions. [2021-11-13 17:48:11,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:48:11,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1462 transitions. [2021-11-13 17:48:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-13 17:48:11,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:48:11,618 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:48:11,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 17:48:11,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:48:11,832 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:48:11,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:48:11,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2109197819, now seen corresponding path program 4 times [2021-11-13 17:48:11,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:48:11,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858719182] [2021-11-13 17:48:11,834 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:48:11,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:48:11,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:48:11,835 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:48:11,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 17:48:12,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:48:12,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:48:12,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 17:48:12,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:48:13,416 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:48:13,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:48:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:48:17,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:48:17,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858719182] [2021-11-13 17:48:17,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858719182] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:48:17,858 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:48:17,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 17:48:17,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628049338] [2021-11-13 17:48:17,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:48:17,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 17:48:17,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:48:17,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 17:48:17,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 17:48:17,861 INFO L87 Difference]: Start difference. First operand 1191 states and 1462 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:48:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:48:31,850 INFO L93 Difference]: Finished difference Result 1283 states and 1582 transitions. [2021-11-13 17:48:31,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 17:48:31,852 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-13 17:48:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:48:31,858 INFO L225 Difference]: With dead ends: 1283 [2021-11-13 17:48:31,859 INFO L226 Difference]: Without dead ends: 1279 [2021-11-13 17:48:31,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 17:48:31,868 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 276 mSDsluCounter, 30438 mSDsCounter, 0 mSdLazyCounter, 4087 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6717.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 31394 SdHoareTripleChecker+Invalid, 4616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.97ms SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 4087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7650.01ms IncrementalHoareTripleChecker+Time [2021-11-13 17:48:31,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 31394 Invalid, 4616 Unknown, 0 Unchecked, 43.97ms Time], IncrementalHoareTripleChecker [529 Valid, 4087 Invalid, 0 Unknown, 0 Unchecked, 7650.01ms Time] [2021-11-13 17:48:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-11-13 17:48:31,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1221. [2021-11-13 17:48:31,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 836 states have (on average 1.777511961722488) internal successors, (1486), 1209 states have internal predecessors, (1486), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-13 17:48:31,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1508 transitions. [2021-11-13 17:48:31,906 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1508 transitions. Word has length 107 [2021-11-13 17:48:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:48:31,906 INFO L470 AbstractCegarLoop]: Abstraction has 1221 states and 1508 transitions. [2021-11-13 17:48:31,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 17:48:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1508 transitions. [2021-11-13 17:48:31,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-13 17:48:31,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:48:31,909 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:48:31,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-13 17:48:32,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:48:32,129 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-13 17:48:32,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:48:32,129 INFO L85 PathProgramCache]: Analyzing trace with hash -736370181, now seen corresponding path program 5 times [2021-11-13 17:48:32,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:48:32,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953718943] [2021-11-13 17:48:32,130 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:48:32,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:48:32,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:48:32,131 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:48:32,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36ee3052-afc4-407b-ad41-be70d588b398/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-13 17:48:33,528 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 17:48:33,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:48:33,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 17:48:33,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:48:33,591 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 [2021-11-13 17:48:33,861 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 17:48:33,862 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 20 treesize of output 27 [2021-11-13 17:48:33,913 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 [2021-11-13 17:48:34,137 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 36 treesize of output 24