./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c --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_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/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_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/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_ac24f572-1415-46fb-ac41-80f1c2fa1260/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 f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:15:41,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:15:41,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:15:41,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:15:41,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:15:41,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:15:41,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:15:41,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:15:41,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:15:41,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:15:41,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:15:41,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:15:41,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:15:41,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:15:41,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:15:41,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:15:41,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:15:41,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:15:41,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:15:41,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:15:41,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:15:41,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:15:41,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:15:41,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:15:41,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:15:41,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:15:41,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:15:41,716 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:15:41,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:15:41,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:15:41,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:15:41,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:15:41,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:15:41,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:15:41,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:15:41,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:15:41,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:15:41,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:15:41,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:15:41,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:15:41,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:15:41,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:15:41,762 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:15:41,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:15:41,763 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:15:41,763 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:15:41,764 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:15:41,764 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:15:41,764 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:15:41,764 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:15:41,765 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:15:41,765 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:15:41,765 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:15:41,766 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:15:41,766 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:15:41,766 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:15:41,766 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:15:41,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:15:41,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:15:41,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:15:41,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:15:41,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:15:41,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:15:41,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:15:41,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:15:41,770 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:15:41,770 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:15:41,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:15:41,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:15:41,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:15:41,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:15:41,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:15:41,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:41,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:15:41,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:15:41,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:15:41,773 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:15:41,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:15:41,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:15:41,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:15:41,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:15:41,775 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_ac24f572-1415-46fb-ac41-80f1c2fa1260/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c [2021-11-03 04:15:42,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:15:42,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:15:42,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:15:42,128 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:15:42,129 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:15:42,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2021-11-03 04:15:42,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/data/51cd7ae5f/9a9657e6d3674d038d46f07c0eea489f/FLAG48438b085 [2021-11-03 04:15:42,979 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:15:42,980 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2021-11-03 04:15:43,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/data/51cd7ae5f/9a9657e6d3674d038d46f07c0eea489f/FLAG48438b085 [2021-11-03 04:15:43,074 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/data/51cd7ae5f/9a9657e6d3674d038d46f07c0eea489f [2021-11-03 04:15:43,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:15:43,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:15:43,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:43,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:15:43,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:15:43,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:43" (1/1) ... [2021-11-03 04:15:43,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4dd9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:43, skipping insertion in model container [2021-11-03 04:15:43,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:43" (1/1) ... [2021-11-03 04:15:43,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:15:43,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:43,496 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_ac24f572-1415-46fb-ac41-80f1c2fa1260/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2021-11-03 04:15:43,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:43,894 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 04:15:43,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54bf0438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:43, skipping insertion in model container [2021-11-03 04:15:43,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:43,895 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:15:43,898 INFO L168 Benchmark]: Toolchain (without parser) took 815.99 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.1 MB in the beginning and 65.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:15:43,899 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:15:43,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 811.30 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.0 MB in the beginning and 65.6 MB in the end (delta: -18.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:15:43,903 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory is still 66.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 811.30 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 47.0 MB in the beginning and 65.6 MB in the end (delta: -18.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2501]: 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_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/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_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/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_ac24f572-1415-46fb-ac41-80f1c2fa1260/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 f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:15:46,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:15:46,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:15:46,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:15:46,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:15:46,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:15:46,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:15:46,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:15:46,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:15:46,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:15:46,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:15:46,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:15:46,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:15:46,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:15:46,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:15:46,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:15:46,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:15:46,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:15:46,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:15:46,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:15:46,821 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:15:46,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:15:46,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:15:46,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:15:46,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:15:46,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:15:46,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:15:46,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:15:46,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:15:46,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:15:46,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:15:46,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:15:46,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:15:46,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:15:46,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:15:46,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:15:46,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:15:46,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:15:46,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:15:46,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:15:46,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:15:46,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:15:46,917 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:15:46,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:15:46,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:15:46,919 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:15:46,919 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:15:46,920 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:15:46,920 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:15:46,920 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:15:46,920 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:15:46,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:15:46,923 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:15:46,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:15:46,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:15:46,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:15:46,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:15:46,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:15:46,924 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:15:46,925 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:15:46,925 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:15:46,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:15:46,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:15:46,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:15:46,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:15:46,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:15:46,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:15:46,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:15:46,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:46,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:15:46,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:15:46,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:15:46,928 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:15:46,928 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:15:46,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:15:46,929 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:15:46,929 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:15:46,929 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_ac24f572-1415-46fb-ac41-80f1c2fa1260/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91feaa60fbddcfc87f4cdb3911bff4dfabb88b0b67a46a205760e052b15032c [2021-11-03 04:15:47,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:15:47,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:15:47,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:15:47,393 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:15:47,394 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:15:47,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2021-11-03 04:15:47,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/data/07358ecaf/5db599244b3d48b382c90c466f1e2cb5/FLAG754013fc2 [2021-11-03 04:15:48,386 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:15:48,387 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c [2021-11-03 04:15:48,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/data/07358ecaf/5db599244b3d48b382c90c466f1e2cb5/FLAG754013fc2 [2021-11-03 04:15:48,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/data/07358ecaf/5db599244b3d48b382c90c466f1e2cb5 [2021-11-03 04:15:48,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:15:48,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:15:48,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:48,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:15:48,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:15:48,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f53a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:48, skipping insertion in model container [2021-11-03 04:15:48,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:15:48" (1/1) ... [2021-11-03 04:15:48,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:15:48,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:48,963 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_ac24f572-1415-46fb-ac41-80f1c2fa1260/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2021-11-03 04:15:49,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:49,490 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:15:49,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:15:49,546 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_ac24f572-1415-46fb-ac41-80f1c2fa1260/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2021-11-03 04:15:49,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:49,695 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:15:49,715 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_ac24f572-1415-46fb-ac41-80f1c2fa1260/sv-benchmarks/c/product-lines/elevator_spec3_product23.cil.c[5798,5811] [2021-11-03 04:15:49,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:15:49,838 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:15:49,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49 WrapperNode [2021-11-03 04:15:49,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:15:49,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:15:49,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:15:49,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:15:49,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (1/1) ... [2021-11-03 04:15:49,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (1/1) ... [2021-11-03 04:15:50,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:15:50,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:15:50,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:15:50,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:15:50,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (1/1) ... [2021-11-03 04:15:50,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (1/1) ... [2021-11-03 04:15:50,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (1/1) ... [2021-11-03 04:15:50,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (1/1) ... [2021-11-03 04:15:51,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (1/1) ... [2021-11-03 04:15:51,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (1/1) ... [2021-11-03 04:15:51,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (1/1) ... [2021-11-03 04:15:51,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:15:51,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:15:51,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:15:51,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:15:51,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (1/1) ... [2021-11-03 04:15:51,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:15:51,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:15:51,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:15:51,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:15:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:15:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:15:51,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:15:51,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:16:16,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:16:16,418 INFO L299 CfgBuilder]: Removed 2077 assume(true) statements. [2021-11-03 04:16:16,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:16:16 BoogieIcfgContainer [2021-11-03 04:16:16,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:16:16,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:16:16,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:16:16,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:16:16,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:15:48" (1/3) ... [2021-11-03 04:16:16,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71058cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:16:16, skipping insertion in model container [2021-11-03 04:16:16,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:15:49" (2/3) ... [2021-11-03 04:16:16,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71058cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:16:16, skipping insertion in model container [2021-11-03 04:16:16,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:16:16" (3/3) ... [2021-11-03 04:16:16,437 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product23.cil.c [2021-11-03 04:16:16,442 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:16:16,443 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:16:16,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:16:16,536 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 04:16:16,537 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:16:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 8983 states, 8972 states have (on average 1.8875390102541239) internal successors, (16935), 8982 states have internal predecessors, (16935), 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 04:16:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-03 04:16:16,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:16,746 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, 1, 1, 1, 1, 1] [2021-11-03 04:16:16,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:16:16,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:16,759 INFO L85 PathProgramCache]: Analyzing trace with hash -610179148, now seen corresponding path program 1 times [2021-11-03 04:16:16,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:16,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930637626] [2021-11-03 04:16:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:16,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:16,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:16,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:16,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:16:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:17,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:16:17,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:17,491 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 04:16:17,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:17,669 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 04:16:17,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:17,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930637626] [2021-11-03 04:16:17,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930637626] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:17,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:17,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:16:17,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402545680] [2021-11-03 04:16:17,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:16:17,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:17,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:16:17,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:16:17,727 INFO L87 Difference]: Start difference. First operand has 8983 states, 8972 states have (on average 1.8875390102541239) internal successors, (16935), 8982 states have internal predecessors, (16935), 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 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 04:16:21,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:21,673 INFO L93 Difference]: Finished difference Result 62503 states and 117826 transitions. [2021-11-03 04:16:21,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:16:21,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 47 [2021-11-03 04:16:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:22,047 INFO L225 Difference]: With dead ends: 62503 [2021-11-03 04:16:22,047 INFO L226 Difference]: Without dead ends: 53521 [2021-11-03 04:16:22,096 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:16:22,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53521 states. [2021-11-03 04:16:23,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53521 to 8995. [2021-11-03 04:16:23,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8995 states, 8985 states have (on average 1.8844741235392322) internal successors, (16932), 8994 states have internal predecessors, (16932), 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 04:16:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8995 states to 8995 states and 16932 transitions. [2021-11-03 04:16:23,313 INFO L78 Accepts]: Start accepts. Automaton has 8995 states and 16932 transitions. Word has length 47 [2021-11-03 04:16:23,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:23,314 INFO L470 AbstractCegarLoop]: Abstraction has 8995 states and 16932 transitions. [2021-11-03 04:16:23,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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 04:16:23,315 INFO L276 IsEmpty]: Start isEmpty. Operand 8995 states and 16932 transitions. [2021-11-03 04:16:23,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:16:23,322 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:23,322 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:23,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:23,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:23,549 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:16:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1975585822, now seen corresponding path program 1 times [2021-11-03 04:16:23,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:23,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045745620] [2021-11-03 04:16:23,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:23,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:23,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:23,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:23,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:16:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:24,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:16:24,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:24,200 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 04:16:24,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:24,366 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 04:16:24,367 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:24,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045745620] [2021-11-03 04:16:24,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045745620] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:24,367 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:24,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:16:24,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213377733] [2021-11-03 04:16:24,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:24,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:24,371 INFO L87 Difference]: Start difference. First operand 8995 states and 16932 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 04:16:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:25,001 INFO L93 Difference]: Finished difference Result 17902 states and 33707 transitions. [2021-11-03 04:16:25,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:25,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2021-11-03 04:16:25,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:25,033 INFO L225 Difference]: With dead ends: 17902 [2021-11-03 04:16:25,034 INFO L226 Difference]: Without dead ends: 8921 [2021-11-03 04:16:25,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 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 04:16:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8921 states. [2021-11-03 04:16:25,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8921 to 8921. [2021-11-03 04:16:25,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8921 states, 8911 states have (on average 1.8839636404443945) internal successors, (16788), 8920 states have internal predecessors, (16788), 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 04:16:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 16788 transitions. [2021-11-03 04:16:25,391 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 16788 transitions. Word has length 49 [2021-11-03 04:16:25,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:25,392 INFO L470 AbstractCegarLoop]: Abstraction has 8921 states and 16788 transitions. [2021-11-03 04:16:25,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 04:16:25,394 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 16788 transitions. [2021-11-03 04:16:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 04:16:25,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:25,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:25,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:25,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:25,622 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:16:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:25,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1378256444, now seen corresponding path program 1 times [2021-11-03 04:16:25,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:25,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108384923] [2021-11-03 04:16:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:25,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:25,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:25,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:25,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:16:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:26,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:16:26,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:26,338 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 04:16:26,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:26,563 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 04:16:26,563 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:26,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108384923] [2021-11-03 04:16:26,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108384923] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:26,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:26,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:16:26,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641272794] [2021-11-03 04:16:26,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:16:26,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:26,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:16:26,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:16:26,567 INFO L87 Difference]: Start difference. First operand 8921 states and 16788 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 04:16:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:27,487 INFO L93 Difference]: Finished difference Result 17816 states and 33539 transitions. [2021-11-03 04:16:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:16:27,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 51 [2021-11-03 04:16:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:27,516 INFO L225 Difference]: With dead ends: 17816 [2021-11-03 04:16:27,516 INFO L226 Difference]: Without dead ends: 8921 [2021-11-03 04:16:27,528 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:16:27,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8921 states. [2021-11-03 04:16:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8921 to 8921. [2021-11-03 04:16:27,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8921 states, 8911 states have (on average 1.8828414319380542) internal successors, (16778), 8920 states have internal predecessors, (16778), 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 04:16:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8921 states to 8921 states and 16778 transitions. [2021-11-03 04:16:27,893 INFO L78 Accepts]: Start accepts. Automaton has 8921 states and 16778 transitions. Word has length 51 [2021-11-03 04:16:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:27,893 INFO L470 AbstractCegarLoop]: Abstraction has 8921 states and 16778 transitions. [2021-11-03 04:16:27,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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 04:16:27,896 INFO L276 IsEmpty]: Start isEmpty. Operand 8921 states and 16778 transitions. [2021-11-03 04:16:27,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:16:27,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:27,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:27,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:28,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:28,119 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:16:28,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:28,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1041766662, now seen corresponding path program 1 times [2021-11-03 04:16:28,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:28,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105674036] [2021-11-03 04:16:28,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:28,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:28,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:28,123 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:28,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:16:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:28,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:16:28,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:28,887 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 04:16:28,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:29,162 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 04:16:29,162 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:29,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105674036] [2021-11-03 04:16:29,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105674036] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:29,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:29,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:16:29,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286354736] [2021-11-03 04:16:29,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:16:29,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:29,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:16:29,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:16:29,165 INFO L87 Difference]: Start difference. First operand 8921 states and 16778 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 04:16:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:36,195 INFO L93 Difference]: Finished difference Result 39788 states and 74417 transitions. [2021-11-03 04:16:36,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:16:36,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 55 [2021-11-03 04:16:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:36,311 INFO L225 Difference]: With dead ends: 39788 [2021-11-03 04:16:36,311 INFO L226 Difference]: Without dead ends: 30937 [2021-11-03 04:16:36,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:16:36,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30937 states. [2021-11-03 04:16:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30937 to 15793. [2021-11-03 04:16:37,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15793 states, 15783 states have (on average 1.8827219159855542) internal successors, (29715), 15792 states have internal predecessors, (29715), 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 04:16:37,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15793 states to 15793 states and 29715 transitions. [2021-11-03 04:16:37,436 INFO L78 Accepts]: Start accepts. Automaton has 15793 states and 29715 transitions. Word has length 55 [2021-11-03 04:16:37,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:37,438 INFO L470 AbstractCegarLoop]: Abstraction has 15793 states and 29715 transitions. [2021-11-03 04:16:37,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 04:16:37,439 INFO L276 IsEmpty]: Start isEmpty. Operand 15793 states and 29715 transitions. [2021-11-03 04:16:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:16:37,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:37,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:37,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:37,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:37,659 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:16:37,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:37,660 INFO L85 PathProgramCache]: Analyzing trace with hash 282176587, now seen corresponding path program 1 times [2021-11-03 04:16:37,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:37,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758072682] [2021-11-03 04:16:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:37,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:37,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:37,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:37,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:16:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:38,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:16:38,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:16:38,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:38,714 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 04:16:38,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:38,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758072682] [2021-11-03 04:16:38,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758072682] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:38,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:38,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:16:38,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858829985] [2021-11-03 04:16:38,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:16:38,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:16:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:16:38,717 INFO L87 Difference]: Start difference. First operand 15793 states and 29715 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 04:16:45,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:45,587 INFO L93 Difference]: Finished difference Result 129634 states and 243972 transitions. [2021-11-03 04:16:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:16:45,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 55 [2021-11-03 04:16:45,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:46,101 INFO L225 Difference]: With dead ends: 129634 [2021-11-03 04:16:46,101 INFO L226 Difference]: Without dead ends: 113911 [2021-11-03 04:16:46,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:16:46,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113911 states. [2021-11-03 04:16:48,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113911 to 29123. [2021-11-03 04:16:48,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29123 states, 29113 states have (on average 1.8785422319925806) internal successors, (54690), 29122 states have internal predecessors, (54690), 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 04:16:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29123 states to 29123 states and 54690 transitions. [2021-11-03 04:16:48,664 INFO L78 Accepts]: Start accepts. Automaton has 29123 states and 54690 transitions. Word has length 55 [2021-11-03 04:16:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:48,665 INFO L470 AbstractCegarLoop]: Abstraction has 29123 states and 54690 transitions. [2021-11-03 04:16:48,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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 04:16:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 29123 states and 54690 transitions. [2021-11-03 04:16:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:16:48,668 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:48,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:48,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:48,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:48,881 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:16:48,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:48,882 INFO L85 PathProgramCache]: Analyzing trace with hash 2131918927, now seen corresponding path program 1 times [2021-11-03 04:16:48,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:48,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76951106] [2021-11-03 04:16:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:48,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:48,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:48,890 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:48,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:16:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:49,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:16:49,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:49,540 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 04:16:49,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:49,690 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 04:16:49,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:49,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76951106] [2021-11-03 04:16:49,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76951106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:49,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:49,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:16:49,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556570884] [2021-11-03 04:16:49,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:16:49,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:49,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:16:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:16:49,693 INFO L87 Difference]: Start difference. First operand 29123 states and 54690 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 04:16:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:16:52,560 INFO L93 Difference]: Finished difference Result 86209 states and 161876 transitions. [2021-11-03 04:16:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:16:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2021-11-03 04:16:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:16:52,664 INFO L225 Difference]: With dead ends: 86209 [2021-11-03 04:16:52,665 INFO L226 Difference]: Without dead ends: 57118 [2021-11-03 04:16:52,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 04:16:52,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57118 states. [2021-11-03 04:16:54,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57118 to 28999. [2021-11-03 04:16:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28999 states, 28989 states have (on average 1.8780226982648591) internal successors, (54442), 28998 states have internal predecessors, (54442), 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 04:16:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28999 states to 28999 states and 54442 transitions. [2021-11-03 04:16:54,159 INFO L78 Accepts]: Start accepts. Automaton has 28999 states and 54442 transitions. Word has length 56 [2021-11-03 04:16:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:16:54,160 INFO L470 AbstractCegarLoop]: Abstraction has 28999 states and 54442 transitions. [2021-11-03 04:16:54,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 04:16:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 28999 states and 54442 transitions. [2021-11-03 04:16:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:16:54,163 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:16:54,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:16:54,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:16:54,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:16:54,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:16:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:16:54,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1503834706, now seen corresponding path program 1 times [2021-11-03 04:16:54,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:16:54,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144115877] [2021-11-03 04:16:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:16:54,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:16:54,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:16:54,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:16:54,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:16:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:16:54,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:16:54,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:16:55,083 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 04:16:55,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:16:55,322 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 04:16:55,322 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:16:55,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144115877] [2021-11-03 04:16:55,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144115877] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:16:55,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:16:55,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:16:55,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403197798] [2021-11-03 04:16:55,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:16:55,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:16:55,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:16:55,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:16:55,325 INFO L87 Difference]: Start difference. First operand 28999 states and 54442 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 04:17:15,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:15,364 INFO L93 Difference]: Finished difference Result 110297 states and 206683 transitions. [2021-11-03 04:17:15,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:17:15,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 56 [2021-11-03 04:17:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:15,506 INFO L225 Difference]: With dead ends: 110297 [2021-11-03 04:17:15,506 INFO L226 Difference]: Without dead ends: 81332 [2021-11-03 04:17:15,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:17:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81332 states. [2021-11-03 04:17:18,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81332 to 52181. [2021-11-03 04:17:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52181 states, 52171 states have (on average 1.841962009545533) internal successors, (96097), 52180 states have internal predecessors, (96097), 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 04:17:18,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52181 states to 52181 states and 96097 transitions. [2021-11-03 04:17:18,369 INFO L78 Accepts]: Start accepts. Automaton has 52181 states and 96097 transitions. Word has length 56 [2021-11-03 04:17:18,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:18,370 INFO L470 AbstractCegarLoop]: Abstraction has 52181 states and 96097 transitions. [2021-11-03 04:17:18,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 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 04:17:18,370 INFO L276 IsEmpty]: Start isEmpty. Operand 52181 states and 96097 transitions. [2021-11-03 04:17:18,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:17:18,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:18,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:18,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:18,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:18,592 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:17:18,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1216489331, now seen corresponding path program 1 times [2021-11-03 04:17:18,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:18,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58464918] [2021-11-03 04:17:18,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:18,593 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:18,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:18,594 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:18,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:17:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:19,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:17:19,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:19,292 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 04:17:19,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:19,448 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 04:17:19,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:19,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58464918] [2021-11-03 04:17:19,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58464918] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:19,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:19,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:17:19,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347077259] [2021-11-03 04:17:19,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:17:19,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:19,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:17:19,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:17:19,451 INFO L87 Difference]: Start difference. First operand 52181 states and 96097 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 04:17:25,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:17:25,249 INFO L93 Difference]: Finished difference Result 204678 states and 376861 transitions. [2021-11-03 04:17:25,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:17:25,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 59 [2021-11-03 04:17:25,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:17:25,481 INFO L225 Difference]: With dead ends: 204678 [2021-11-03 04:17:25,481 INFO L226 Difference]: Without dead ends: 152534 [2021-11-03 04:17:25,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 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 04:17:25,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152534 states. [2021-11-03 04:17:28,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152534 to 52067. [2021-11-03 04:17:28,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52067 states, 52057 states have (on average 1.8377355590986804) internal successors, (95667), 52066 states have internal predecessors, (95667), 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 04:17:28,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52067 states to 52067 states and 95667 transitions. [2021-11-03 04:17:28,771 INFO L78 Accepts]: Start accepts. Automaton has 52067 states and 95667 transitions. Word has length 59 [2021-11-03 04:17:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:17:28,771 INFO L470 AbstractCegarLoop]: Abstraction has 52067 states and 95667 transitions. [2021-11-03 04:17:28,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 04:17:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 52067 states and 95667 transitions. [2021-11-03 04:17:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:17:28,773 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:17:28,773 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:17:28,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:17:28,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:17:28,982 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:17:28,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:17:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash 745688846, now seen corresponding path program 1 times [2021-11-03 04:17:28,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:17:28,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929236129] [2021-11-03 04:17:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:17:28,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:17:28,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:17:28,984 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:17:28,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac24f572-1415-46fb-ac41-80f1c2fa1260/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:17:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:17:29,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:17:29,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:17:29,701 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 04:17:29,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:17:29,869 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 04:17:29,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:17:29,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929236129] [2021-11-03 04:17:29,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929236129] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:17:29,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:17:29,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:17:29,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669435486] [2021-11-03 04:17:29,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:17:29,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:17:29,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:17:29,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:17:29,873 INFO L87 Difference]: Start difference. First operand 52067 states and 95667 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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)