./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:02:38,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:02:38,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:02:38,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:02:38,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:02:38,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:02:38,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:02:38,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:02:38,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:02:38,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:02:38,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:02:38,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:02:38,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:02:38,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:02:38,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:02:38,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:02:38,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:02:38,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:02:38,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:02:38,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:02:38,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:02:38,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:02:38,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:02:38,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:02:38,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:02:38,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:02:38,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:02:38,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:02:38,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:02:38,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:02:38,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:02:38,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:02:38,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:02:38,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:02:38,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:02:38,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:02:38,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:02:38,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:02:38,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:02:38,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:02:38,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:02:38,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:02:38,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:02:38,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:02:38,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:02:38,798 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:02:38,798 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:02:38,798 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:02:38,798 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:02:38,799 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:02:38,799 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:02:38,799 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:02:38,800 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:02:38,800 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:02:38,801 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:02:38,801 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:02:38,801 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:02:38,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:02:38,802 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:02:38,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:02:38,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:02:38,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:02:38,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:02:38,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:02:38,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:02:38,804 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:02:38,805 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:02:38,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:02:38,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:02:38,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:02:38,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:02:38,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:02:38,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:02:38,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:02:38,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:02:38,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:02:38,808 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:02:38,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:02:38,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:02:38,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:02:38,809 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:02:38,809 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 [2021-11-03 05:02:39,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:02:39,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:02:39,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:02:39,200 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:02:39,200 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:02:39,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2021-11-03 05:02:39,266 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/data/e13f4a1ab/fa85b1ee0c57440a9062b144b1cd3974/FLAG8ea243fb9 [2021-11-03 05:02:39,940 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:02:39,942 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2021-11-03 05:02:39,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/data/e13f4a1ab/fa85b1ee0c57440a9062b144b1cd3974/FLAG8ea243fb9 [2021-11-03 05:02:40,121 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/data/e13f4a1ab/fa85b1ee0c57440a9062b144b1cd3974 [2021-11-03 05:02:40,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:02:40,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:02:40,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:02:40,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:02:40,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:02:40,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:02:40" (1/1) ... [2021-11-03 05:02:40,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c79710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:40, skipping insertion in model container [2021-11-03 05:02:40,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:02:40" (1/1) ... [2021-11-03 05:02:40,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:02:40,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:02:40,695 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_179f3239-584e-4acb-ba6a-81c2c263172f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2021-11-03 05:02:40,911 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_179f3239-584e-4acb-ba6a-81c2c263172f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2021-11-03 05:02:40,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:02:40,931 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) [2021-11-03 05:02:40,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@555e4111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:40, skipping insertion in model container [2021-11-03 05:02:40,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:02:40,932 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:02:40,934 INFO L168 Benchmark]: Toolchain (without parser) took 804.62 ms. Allocated memory is still 111.1 MB. Free memory was 70.8 MB in the beginning and 73.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:02:40,935 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 111.1 MB. Free memory is still 89.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:02:40,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 798.88 ms. Allocated memory is still 111.1 MB. Free memory was 70.6 MB in the beginning and 73.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 05:02:40,937 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 111.1 MB. Free memory is still 89.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 798.88 ms. Allocated memory is still 111.1 MB. Free memory was 70.6 MB in the beginning and 73.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: 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_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:02:43,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:02:43,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:02:43,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:02:43,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:02:43,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:02:43,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:02:43,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:02:43,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:02:43,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:02:43,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:02:43,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:02:43,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:02:43,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:02:43,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:02:43,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:02:43,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:02:43,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:02:43,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:02:43,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:02:43,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:02:43,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:02:43,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:02:43,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:02:43,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:02:43,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:02:43,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:02:43,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:02:43,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:02:43,254 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:02:43,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:02:43,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:02:43,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:02:43,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:02:43,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:02:43,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:02:43,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:02:43,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:02:43,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:02:43,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:02:43,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:02:43,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:02:43,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:02:43,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:02:43,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:02:43,330 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:02:43,330 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:02:43,330 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:02:43,331 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:02:43,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:02:43,331 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:02:43,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:02:43,334 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:02:43,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:02:43,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:02:43,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:02:43,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:02:43,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:02:43,336 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:02:43,336 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:02:43,337 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:02:43,337 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:02:43,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:02:43,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:02:43,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:02:43,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:02:43,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:02:43,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:02:43,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:02:43,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:02:43,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:02:43,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:02:43,340 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:02:43,341 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:02:43,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:02:43,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:02:43,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:02:43,342 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_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a17e1f9edfd37607fb472869452b377d4af1281c9808dec0371b4f943952037 [2021-11-03 05:02:43,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:02:43,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:02:43,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:02:43,756 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:02:43,757 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:02:43,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2021-11-03 05:02:43,835 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/data/207704547/1d09b63f27a142589392be66cb21dd1b/FLAG78824dfab [2021-11-03 05:02:44,475 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:02:44,476 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i [2021-11-03 05:02:44,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/data/207704547/1d09b63f27a142589392be66cb21dd1b/FLAG78824dfab [2021-11-03 05:02:44,667 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/data/207704547/1d09b63f27a142589392be66cb21dd1b [2021-11-03 05:02:44,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:02:44,671 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:02:44,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:02:44,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:02:44,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:02:44,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:02:44" (1/1) ... [2021-11-03 05:02:44,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f90ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:44, skipping insertion in model container [2021-11-03 05:02:44,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:02:44" (1/1) ... [2021-11-03 05:02:44,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:02:44,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:02:45,246 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_179f3239-584e-4acb-ba6a-81c2c263172f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2021-11-03 05:02:45,467 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_179f3239-584e-4acb-ba6a-81c2c263172f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2021-11-03 05:02:45,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:02:45,499 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:02:45,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:02:45,555 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_179f3239-584e-4acb-ba6a-81c2c263172f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2021-11-03 05:02:45,715 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_179f3239-584e-4acb-ba6a-81c2c263172f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2021-11-03 05:02:45,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:02:45,743 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:02:45,776 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_179f3239-584e-4acb-ba6a-81c2c263172f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[33021,33034] [2021-11-03 05:02:45,865 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_179f3239-584e-4acb-ba6a-81c2c263172f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-1.i[49681,49694] [2021-11-03 05:02:45,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:02:45,935 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:02:45,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45 WrapperNode [2021-11-03 05:02:45,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:02:45,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:02:45,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:02:45,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:02:45,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (1/1) ... [2021-11-03 05:02:46,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (1/1) ... [2021-11-03 05:02:46,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:02:46,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:02:46,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:02:46,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:02:46,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (1/1) ... [2021-11-03 05:02:46,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (1/1) ... [2021-11-03 05:02:46,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (1/1) ... [2021-11-03 05:02:46,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (1/1) ... [2021-11-03 05:02:46,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (1/1) ... [2021-11-03 05:02:46,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (1/1) ... [2021-11-03 05:02:46,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (1/1) ... [2021-11-03 05:02:46,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:02:46,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:02:46,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:02:46,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:02:46,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (1/1) ... [2021-11-03 05:02:46,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:02:46,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:02:46,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:02:46,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:02:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:02:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:02:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:02:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:02:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:02:46,345 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:02:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:02:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:02:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:02:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:02:46,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:02:46,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:02:57,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:02:57,244 INFO L299 CfgBuilder]: Removed 111 assume(true) statements. [2021-11-03 05:02:57,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:02:57 BoogieIcfgContainer [2021-11-03 05:02:57,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:02:57,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:02:57,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:02:57,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:02:57,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:02:44" (1/3) ... [2021-11-03 05:02:57,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eacac99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:02:57, skipping insertion in model container [2021-11-03 05:02:57,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:02:45" (2/3) ... [2021-11-03 05:02:57,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eacac99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:02:57, skipping insertion in model container [2021-11-03 05:02:57,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:02:57" (3/3) ... [2021-11-03 05:02:57,265 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-1.i [2021-11-03 05:02:57,272 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:02:57,273 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 05:02:57,344 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:02:57,359 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-11-03 05:02:57,360 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 05:02:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 251 states have (on average 1.7250996015936255) internal successors, (433), 257 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:57,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 05:02:57,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:57,390 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:02:57,390 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:02:57,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash 889803109, now seen corresponding path program 1 times [2021-11-03 05:02:57,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:57,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761734574] [2021-11-03 05:02:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:57,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:57,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:57,410 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:57,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:02:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:57,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:02:57,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:57,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:57,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:57,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:57,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761734574] [2021-11-03 05:02:57,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761734574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:02:57,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:02:57,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:02:57,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928919485] [2021-11-03 05:02:57,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:02:57,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:57,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:02:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:02:57,807 INFO L87 Difference]: Start difference. First operand has 258 states, 251 states have (on average 1.7250996015936255) internal successors, (433), 257 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:57,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:57,860 INFO L93 Difference]: Finished difference Result 514 states and 864 transitions. [2021-11-03 05:02:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:02:57,861 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 05:02:57,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:57,884 INFO L225 Difference]: With dead ends: 514 [2021-11-03 05:02:57,884 INFO L226 Difference]: Without dead ends: 254 [2021-11-03 05:02:57,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:02:57,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-03 05:02:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-11-03 05:02:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 248 states have (on average 1.342741935483871) internal successors, (333), 253 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 333 transitions. [2021-11-03 05:02:57,960 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 333 transitions. Word has length 8 [2021-11-03 05:02:57,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:57,961 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 333 transitions. [2021-11-03 05:02:57,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 333 transitions. [2021-11-03 05:02:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 05:02:57,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:57,964 INFO L513 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] [2021-11-03 05:02:57,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:58,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:58,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:02:58,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:58,168 INFO L85 PathProgramCache]: Analyzing trace with hash -680083191, now seen corresponding path program 1 times [2021-11-03 05:02:58,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:58,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958772735] [2021-11-03 05:02:58,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:58,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:58,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:58,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:58,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:02:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:02:58,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:02:58,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:02:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:58,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:02:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:02:58,871 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:02:58,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958772735] [2021-11-03 05:02:58,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958772735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:02:58,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:02:58,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:02:58,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116916515] [2021-11-03 05:02:58,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:02:58,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:02:58,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:02:58,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:02:58,882 INFO L87 Difference]: Start difference. First operand 254 states and 333 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:59,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:02:59,197 INFO L93 Difference]: Finished difference Result 589 states and 772 transitions. [2021-11-03 05:02:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:02:59,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-03 05:02:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:02:59,206 INFO L225 Difference]: With dead ends: 589 [2021-11-03 05:02:59,211 INFO L226 Difference]: Without dead ends: 507 [2021-11-03 05:02:59,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:02:59,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-03 05:02:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 425. [2021-11-03 05:02:59,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 419 states have (on average 1.331742243436754) internal successors, (558), 424 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 558 transitions. [2021-11-03 05:02:59,281 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 558 transitions. Word has length 42 [2021-11-03 05:02:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:02:59,282 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 558 transitions. [2021-11-03 05:02:59,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:02:59,283 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 558 transitions. [2021-11-03 05:02:59,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 05:02:59,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:02:59,300 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:02:59,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:02:59,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:02:59,514 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:02:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:02:59,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1555923977, now seen corresponding path program 1 times [2021-11-03 05:02:59,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:02:59,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662676665] [2021-11-03 05:02:59,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:02:59,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:02:59,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:02:59,520 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:02:59,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:03:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:00,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:03:00,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-03 05:03:00,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-03 05:03:01,676 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:01,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662676665] [2021-11-03 05:03:01,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662676665] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:01,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:03:01,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:03:01,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131902922] [2021-11-03 05:03:01,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:03:01,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:01,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:03:01,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:03:01,680 INFO L87 Difference]: Start difference. First operand 425 states and 558 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:01,815 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2021-11-03 05:03:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:03:01,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-03 05:03:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:01,819 INFO L225 Difference]: With dead ends: 850 [2021-11-03 05:03:01,820 INFO L226 Difference]: Without dead ends: 433 [2021-11-03 05:03:01,821 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:03:01,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-03 05:03:01,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 431. [2021-11-03 05:03:01,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.2894117647058823) internal successors, (548), 430 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:01,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 548 transitions. [2021-11-03 05:03:01,846 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 548 transitions. Word has length 238 [2021-11-03 05:03:01,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:01,847 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 548 transitions. [2021-11-03 05:03:01,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:01,847 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 548 transitions. [2021-11-03 05:03:01,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 05:03:01,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:01,854 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:03:01,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:02,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:03:02,079 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:03:02,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:02,080 INFO L85 PathProgramCache]: Analyzing trace with hash 370544607, now seen corresponding path program 1 times [2021-11-03 05:03:02,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:02,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122271100] [2021-11-03 05:03:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:02,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:02,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:02,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:02,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:03:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:02,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 05:03:02,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:03,571 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-03 05:03:03,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-03 05:03:04,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:04,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122271100] [2021-11-03 05:03:04,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1122271100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:04,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:03:04,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 9 [2021-11-03 05:03:04,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680052389] [2021-11-03 05:03:04,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:03:04,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:04,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:03:04,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:04,726 INFO L87 Difference]: Start difference. First operand 431 states and 548 transitions. Second operand has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:04,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:04,882 INFO L93 Difference]: Finished difference Result 819 states and 1049 transitions. [2021-11-03 05:03:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:03:04,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-03 05:03:04,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:04,885 INFO L225 Difference]: With dead ends: 819 [2021-11-03 05:03:04,886 INFO L226 Difference]: Without dead ends: 419 [2021-11-03 05:03:04,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:04,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-03 05:03:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2021-11-03 05:03:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 413 states have (on average 1.278450363196126) internal successors, (528), 418 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 528 transitions. [2021-11-03 05:03:04,913 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 528 transitions. Word has length 238 [2021-11-03 05:03:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:04,915 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 528 transitions. [2021-11-03 05:03:04,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.333333333333332) internal successors, (192), 9 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 528 transitions. [2021-11-03 05:03:04,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-11-03 05:03:04,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:04,922 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:03:04,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:05,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:03:05,146 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:03:05,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:05,146 INFO L85 PathProgramCache]: Analyzing trace with hash -919406365, now seen corresponding path program 1 times [2021-11-03 05:03:05,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:05,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187488461] [2021-11-03 05:03:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:05,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:05,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:05,150 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:05,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:03:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:05,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:03:05,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-03 05:03:06,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-03 05:03:07,604 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:07,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187488461] [2021-11-03 05:03:07,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187488461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:07,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:03:07,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:03:07,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760756193] [2021-11-03 05:03:07,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:03:07,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:07,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:03:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:03:07,607 INFO L87 Difference]: Start difference. First operand 419 states and 528 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:08,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:08,011 INFO L93 Difference]: Finished difference Result 789 states and 1004 transitions. [2021-11-03 05:03:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:03:08,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2021-11-03 05:03:08,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:08,021 INFO L225 Difference]: With dead ends: 789 [2021-11-03 05:03:08,021 INFO L226 Difference]: Without dead ends: 417 [2021-11-03 05:03:08,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:03:08,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-03 05:03:08,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2021-11-03 05:03:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 411 states have (on average 1.2773722627737227) internal successors, (525), 416 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 525 transitions. [2021-11-03 05:03:08,037 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 525 transitions. Word has length 238 [2021-11-03 05:03:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:08,038 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 525 transitions. [2021-11-03 05:03:08,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 525 transitions. [2021-11-03 05:03:08,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-03 05:03:08,042 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:08,043 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:03:08,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:08,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:03:08,257 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:03:08,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:08,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1266706643, now seen corresponding path program 1 times [2021-11-03 05:03:08,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:08,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084724388] [2021-11-03 05:03:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:08,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:08,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:08,265 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:08,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:03:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:09,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:03:09,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 05:03:09,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-11-03 05:03:10,505 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:10,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084724388] [2021-11-03 05:03:10,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084724388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:10,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:03:10,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:03:10,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300747899] [2021-11-03 05:03:10,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:03:10,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:10,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:03:10,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:03:10,508 INFO L87 Difference]: Start difference. First operand 417 states and 525 transitions. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:10,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:10,660 INFO L93 Difference]: Finished difference Result 805 states and 1032 transitions. [2021-11-03 05:03:10,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:03:10,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 245 [2021-11-03 05:03:10,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:10,664 INFO L225 Difference]: With dead ends: 805 [2021-11-03 05:03:10,664 INFO L226 Difference]: Without dead ends: 429 [2021-11-03 05:03:10,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:03:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-03 05:03:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-11-03 05:03:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 423 states have (on average 1.2695035460992907) internal successors, (537), 428 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:10,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 537 transitions. [2021-11-03 05:03:10,681 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 537 transitions. Word has length 245 [2021-11-03 05:03:10,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:10,683 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 537 transitions. [2021-11-03 05:03:10,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:10,684 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 537 transitions. [2021-11-03 05:03:10,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-03 05:03:10,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:10,687 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:03:10,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:10,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:03:10,912 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:03:10,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:10,913 INFO L85 PathProgramCache]: Analyzing trace with hash 660379208, now seen corresponding path program 1 times [2021-11-03 05:03:10,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:10,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140224986] [2021-11-03 05:03:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:10,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:10,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:10,915 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:10,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:03:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:11,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:03:11,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:03:12,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:13,400 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:03:13,401 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:13,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140224986] [2021-11-03 05:03:13,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140224986] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:13,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1302556131] [2021-11-03 05:03:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:13,402 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:13,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:03:13,408 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:03:13,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 05:03:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:14,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:03:14,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 05:03:15,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:16,062 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 05:03:16,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1302556131] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:16,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:03:16,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [5, 5] total 11 [2021-11-03 05:03:16,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859640588] [2021-11-03 05:03:16,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:03:16,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:16,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:03:16,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:03:16,066 INFO L87 Difference]: Start difference. First operand 429 states and 537 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:16,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:16,240 INFO L93 Difference]: Finished difference Result 803 states and 1022 transitions. [2021-11-03 05:03:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:03:16,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2021-11-03 05:03:16,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:16,245 INFO L225 Difference]: With dead ends: 803 [2021-11-03 05:03:16,249 INFO L226 Difference]: Without dead ends: 471 [2021-11-03 05:03:16,250 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:03:16,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-03 05:03:16,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 469. [2021-11-03 05:03:16,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 463 states have (on average 1.2462203023758098) internal successors, (577), 468 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 577 transitions. [2021-11-03 05:03:16,268 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 577 transitions. Word has length 248 [2021-11-03 05:03:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:16,268 INFO L470 AbstractCegarLoop]: Abstraction has 469 states and 577 transitions. [2021-11-03 05:03:16,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 577 transitions. [2021-11-03 05:03:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-03 05:03:16,272 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:16,274 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:03:16,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:16,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:16,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:16,687 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:03:16,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:16,688 INFO L85 PathProgramCache]: Analyzing trace with hash -372700096, now seen corresponding path program 1 times [2021-11-03 05:03:16,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:16,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085431219] [2021-11-03 05:03:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:16,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:16,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:16,691 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:16,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:03:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:17,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:03:17,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:03:18,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:03:19,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:19,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085431219] [2021-11-03 05:03:19,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085431219] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:19,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1399676805] [2021-11-03 05:03:19,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:19,365 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:19,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:03:19,366 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:03:19,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:03:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:20,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:03:20,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-03 05:03:21,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-03 05:03:22,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1399676805] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:22,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:03:22,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:03:22,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974149544] [2021-11-03 05:03:22,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:03:22,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:22,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:03:22,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:22,412 INFO L87 Difference]: Start difference. First operand 469 states and 577 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:23,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:23,122 INFO L93 Difference]: Finished difference Result 1027 states and 1273 transitions. [2021-11-03 05:03:23,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:03:23,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2021-11-03 05:03:23,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:23,127 INFO L225 Difference]: With dead ends: 1027 [2021-11-03 05:03:23,127 INFO L226 Difference]: Without dead ends: 752 [2021-11-03 05:03:23,128 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 981 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:23,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2021-11-03 05:03:23,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 740. [2021-11-03 05:03:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 734 states have (on average 1.2574931880108993) internal successors, (923), 739 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 923 transitions. [2021-11-03 05:03:23,154 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 923 transitions. Word has length 248 [2021-11-03 05:03:23,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:23,154 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 923 transitions. [2021-11-03 05:03:23,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:23,155 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 923 transitions. [2021-11-03 05:03:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-03 05:03:23,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:23,160 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:03:23,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:23,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:23,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:23,584 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:03:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:23,585 INFO L85 PathProgramCache]: Analyzing trace with hash -292299512, now seen corresponding path program 1 times [2021-11-03 05:03:23,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:23,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433721162] [2021-11-03 05:03:23,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:23,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:23,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:23,587 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:23,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:03:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:25,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:03:25,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:03:25,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:26,439 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-03 05:03:26,439 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:26,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433721162] [2021-11-03 05:03:26,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433721162] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:26,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [843570104] [2021-11-03 05:03:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:26,440 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:26,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:03:26,440 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:03:26,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 05:03:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:28,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:03:28,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:30,151 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-03 05:03:30,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-03 05:03:31,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [843570104] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:31,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:03:31,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:03:31,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311499279] [2021-11-03 05:03:31,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:03:31,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:31,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:03:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:31,918 INFO L87 Difference]: Start difference. First operand 740 states and 923 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:32,362 INFO L93 Difference]: Finished difference Result 1052 states and 1305 transitions. [2021-11-03 05:03:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:03:32,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2021-11-03 05:03:32,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:32,366 INFO L225 Difference]: With dead ends: 1052 [2021-11-03 05:03:32,366 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 05:03:32,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 1009 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 05:03:32,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 737. [2021-11-03 05:03:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 731 states have (on average 1.2571819425444597) internal successors, (919), 736 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:32,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 919 transitions. [2021-11-03 05:03:32,406 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 919 transitions. Word has length 255 [2021-11-03 05:03:32,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:32,406 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 919 transitions. [2021-11-03 05:03:32,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:32,407 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 919 transitions. [2021-11-03 05:03:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:03:32,409 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:32,409 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:03:32,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:32,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 05:03:32,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:03:32,817 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:03:32,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash 24612397, now seen corresponding path program 1 times [2021-11-03 05:03:32,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:32,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439129663] [2021-11-03 05:03:32,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:32,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:32,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:32,820 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:32,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:03:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:34,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:03:34,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:03:35,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:03:35,852 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:35,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439129663] [2021-11-03 05:03:35,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439129663] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:35,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1518649090] [2021-11-03 05:03:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:35,853 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:35,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:03:35,881 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:03:35,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:03:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:38,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:03:38,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:03:38,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:03:39,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1518649090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:39,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:03:39,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:03:39,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295288135] [2021-11-03 05:03:39,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:03:39,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:03:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:39,069 INFO L87 Difference]: Start difference. First operand 737 states and 919 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:39,168 INFO L93 Difference]: Finished difference Result 959 states and 1227 transitions. [2021-11-03 05:03:39,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:03:39,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-03 05:03:39,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:39,181 INFO L225 Difference]: With dead ends: 959 [2021-11-03 05:03:39,181 INFO L226 Difference]: Without dead ends: 800 [2021-11-03 05:03:39,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1056 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:03:39,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-11-03 05:03:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 797. [2021-11-03 05:03:39,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 791 states have (on average 1.2376738305941846) internal successors, (979), 796 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 979 transitions. [2021-11-03 05:03:39,216 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 979 transitions. Word has length 265 [2021-11-03 05:03:39,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:39,217 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 979 transitions. [2021-11-03 05:03:39,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:39,217 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 979 transitions. [2021-11-03 05:03:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:03:39,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:39,220 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:03:39,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:39,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-03 05:03:39,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:39,637 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:03:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:39,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1170519209, now seen corresponding path program 1 times [2021-11-03 05:03:39,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:39,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665603786] [2021-11-03 05:03:39,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:39,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:39,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:39,640 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:39,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:03:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:41,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:03:41,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:03:42,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:03:42,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:42,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665603786] [2021-11-03 05:03:42,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665603786] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:42,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [667469588] [2021-11-03 05:03:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:42,852 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:42,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:03:42,853 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:03:42,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:03:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:45,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:03:45,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 05:03:45,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:46,493 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-03 05:03:46,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [667469588] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:46,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:03:46,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 05:03:46,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462833251] [2021-11-03 05:03:46,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:03:46,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:46,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:03:46,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:03:46,495 INFO L87 Difference]: Start difference. First operand 797 states and 979 transitions. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:46,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:46,635 INFO L93 Difference]: Finished difference Result 1457 states and 1807 transitions. [2021-11-03 05:03:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:03:46,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-03 05:03:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:46,640 INFO L225 Difference]: With dead ends: 1457 [2021-11-03 05:03:46,640 INFO L226 Difference]: Without dead ends: 749 [2021-11-03 05:03:46,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:03:46,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-11-03 05:03:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 746. [2021-11-03 05:03:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 740 states have (on average 1.2094594594594594) internal successors, (895), 745 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 895 transitions. [2021-11-03 05:03:46,666 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 895 transitions. Word has length 265 [2021-11-03 05:03:46,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:46,667 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 895 transitions. [2021-11-03 05:03:46,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 895 transitions. [2021-11-03 05:03:46,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:03:46,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:46,670 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:03:46,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:46,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:47,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:03:47,079 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:03:47,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1760654349, now seen corresponding path program 1 times [2021-11-03 05:03:47,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:47,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349405712] [2021-11-03 05:03:47,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:47,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:47,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:47,082 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:47,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 05:03:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:49,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:03:49,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:03:49,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:50,456 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:03:50,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:50,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349405712] [2021-11-03 05:03:50,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349405712] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:50,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1018722446] [2021-11-03 05:03:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:50,457 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:50,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:03:50,458 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:03:50,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-03 05:03:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:53,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:03:53,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:03:53,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:54,141 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-03 05:03:54,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1018722446] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:03:54,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:03:54,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-03 05:03:54,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340678518] [2021-11-03 05:03:54,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:03:54,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:03:54,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:03:54,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-03 05:03:54,150 INFO L87 Difference]: Start difference. First operand 746 states and 895 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:54,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:03:54,300 INFO L93 Difference]: Finished difference Result 929 states and 1137 transitions. [2021-11-03 05:03:54,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:03:54,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-03 05:03:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:03:54,305 INFO L225 Difference]: With dead ends: 929 [2021-11-03 05:03:54,305 INFO L226 Difference]: Without dead ends: 702 [2021-11-03 05:03:54,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 1047 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:03:54,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-03 05:03:54,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 695. [2021-11-03 05:03:54,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 689 states have (on average 1.1770682148040639) internal successors, (811), 694 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 811 transitions. [2021-11-03 05:03:54,337 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 811 transitions. Word has length 265 [2021-11-03 05:03:54,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:03:54,337 INFO L470 AbstractCegarLoop]: Abstraction has 695 states and 811 transitions. [2021-11-03 05:03:54,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 5 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:03:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 811 transitions. [2021-11-03 05:03:54,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-03 05:03:54,341 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:03:54,341 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:03:54,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:54,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 05:03:54,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:03:54,760 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:03:54,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:03:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash -625509349, now seen corresponding path program 1 times [2021-11-03 05:03:54,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:03:54,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364576773] [2021-11-03 05:03:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:54,763 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:03:54,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:03:54,764 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:03:54,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 05:03:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:03:57,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:03:57,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:03:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:03:58,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:03:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:03:58,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:03:58,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364576773] [2021-11-03 05:03:58,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364576773] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:03:58,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [875275418] [2021-11-03 05:03:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:03:58,619 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:03:58,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:03:58,620 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:03:58,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-03 05:04:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:02,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:04:02,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:04:02,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-03 05:04:03,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [875275418] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:04:03,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957386487] [2021-11-03 05:04:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:04:03,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:04:03,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:04:03,166 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:04:03,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-03 05:04:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:04:06,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:04:06,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-03 05:04:06,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-03 05:04:07,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957386487] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:04:07,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:04:07,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 05:04:07,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021964537] [2021-11-03 05:04:07,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:04:07,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:04:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:04:07,223 INFO L87 Difference]: Start difference. First operand 695 states and 811 transitions. Second operand has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:07,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:07,868 INFO L93 Difference]: Finished difference Result 1387 states and 1658 transitions. [2021-11-03 05:04:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 05:04:07,869 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-03 05:04:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:07,873 INFO L225 Difference]: With dead ends: 1387 [2021-11-03 05:04:07,873 INFO L226 Difference]: Without dead ends: 735 [2021-11-03 05:04:07,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1588 GetRequests, 1578 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:04:07,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-03 05:04:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2021-11-03 05:04:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 729 states have (on average 1.1673525377229081) internal successors, (851), 734 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 851 transitions. [2021-11-03 05:04:07,902 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 851 transitions. Word has length 265 [2021-11-03 05:04:07,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:07,903 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 851 transitions. [2021-11-03 05:04:07,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.1) internal successors, (221), 10 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:07,903 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 851 transitions. [2021-11-03 05:04:07,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-03 05:04:07,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:07,906 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:04:07,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:08,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-03 05:04:08,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:08,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:04:08,519 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:04:08,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1379426587, now seen corresponding path program 2 times [2021-11-03 05:04:08,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:08,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764316220] [2021-11-03 05:04:08,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:04:08,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:08,522 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:08,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-03 05:04:11,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:04:11,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:04:11,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:04:11,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:04:12,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:04:13,136 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:04:13,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764316220] [2021-11-03 05:04:13,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764316220] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:04:13,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [348125605] [2021-11-03 05:04:13,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:04:13,137 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:04:13,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:04:13,138 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:04:13,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-03 05:04:18,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:04:18,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:04:18,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:04:18,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:04:18,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-03 05:04:19,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [348125605] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:04:19,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930792299] [2021-11-03 05:04:19,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:04:19,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:04:19,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:04:19,428 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:04:19,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-03 05:04:22,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:04:22,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:04:22,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:04:22,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:04:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:04:23,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:04:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-03 05:04:24,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930792299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:04:24,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:04:24,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 5, 5] total 22 [2021-11-03 05:04:24,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894974615] [2021-11-03 05:04:24,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 05:04:24,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:04:24,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 05:04:24,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:04:24,734 INFO L87 Difference]: Start difference. First operand 735 states and 851 transitions. Second operand has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:04:47,834 INFO L93 Difference]: Finished difference Result 3281 states and 3971 transitions. [2021-11-03 05:04:47,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-03 05:04:47,836 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2021-11-03 05:04:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:04:47,849 INFO L225 Difference]: With dead ends: 3281 [2021-11-03 05:04:47,849 INFO L226 Difference]: Without dead ends: 2593 [2021-11-03 05:04:47,854 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1768 GetRequests, 1662 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3767 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2593, Invalid=8963, Unknown=0, NotChecked=0, Total=11556 [2021-11-03 05:04:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2021-11-03 05:04:47,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2211. [2021-11-03 05:04:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2205 states have (on average 1.1551020408163266) internal successors, (2547), 2210 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2547 transitions. [2021-11-03 05:04:47,976 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2547 transitions. Word has length 281 [2021-11-03 05:04:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:04:47,977 INFO L470 AbstractCegarLoop]: Abstraction has 2211 states and 2547 transitions. [2021-11-03 05:04:47,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 29.59090909090909) internal successors, (651), 22 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:04:47,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2547 transitions. [2021-11-03 05:04:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2021-11-03 05:04:47,986 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:04:47,986 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:04:48,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:48,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:48,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-03 05:04:48,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:04:48,601 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 05:04:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:04:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash -308654593, now seen corresponding path program 3 times [2021-11-03 05:04:48,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:04:48,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410396686] [2021-11-03 05:04:48,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 05:04:48,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:04:48,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:04:48,605 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:04:48,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_179f3239-584e-4acb-ba6a-81c2c263172f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process