./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product28.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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/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 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:46:02,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:46:02,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:46:02,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:46:02,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:46:02,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:46:02,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:46:02,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:46:02,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:46:02,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:46:02,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:46:02,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:46:02,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:46:02,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:46:02,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:46:02,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:46:02,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:46:02,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:46:02,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:46:02,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:46:02,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:46:02,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:46:02,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:46:02,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:46:02,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:46:02,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:46:02,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:46:02,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:46:02,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:46:02,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:46:02,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:46:02,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:46:02,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:46:02,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:46:02,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:46:02,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:46:02,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:46:02,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:46:02,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:46:02,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:46:02,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:46:02,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:46:02,758 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:46:02,758 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:46:02,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:46:02,760 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:46:02,760 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:46:02,760 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:46:02,761 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:46:02,761 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:46:02,768 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:46:02,768 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:46:02,769 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:46:02,769 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:46:02,769 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:46:02,770 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:46:02,770 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:46:02,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:46:02,771 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:46:02,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:46:02,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:46:02,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:46:02,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:46:02,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:46:02,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:46:02,773 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:46:02,773 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:46:02,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:46:02,773 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:46:02,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:46:02,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:46:02,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:46:02,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:46:02,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:46:02,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:46:02,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:46:02,775 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:46:02,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:46:02,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:46:02,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:46:02,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:46:02,777 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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 [2021-11-03 04:46:03,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:46:03,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:46:03,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:46:03,093 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:46:03,093 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:46:03,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2021-11-03 04:46:03,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/data/f6ec18b7d/1ebc61690a4e4dbab79c0853ce83acbc/FLAG08dc57088 [2021-11-03 04:46:03,782 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:46:03,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2021-11-03 04:46:03,810 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/data/f6ec18b7d/1ebc61690a4e4dbab79c0853ce83acbc/FLAG08dc57088 [2021-11-03 04:46:04,032 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/data/f6ec18b7d/1ebc61690a4e4dbab79c0853ce83acbc [2021-11-03 04:46:04,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:46:04,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:46:04,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:46:04,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:46:04,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:46:04,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:46:04" (1/1) ... [2021-11-03 04:46:04,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d330c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:04, skipping insertion in model container [2021-11-03 04:46:04,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:46:04" (1/1) ... [2021-11-03 04:46:04,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:46:04,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:46:05,015 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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c[73050,73063] [2021-11-03 04:46:05,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:46:05,035 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 04:46:05,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@350a61f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:05, skipping insertion in model container [2021-11-03 04:46:05,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:46:05,037 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:46:05,040 INFO L168 Benchmark]: Toolchain (without parser) took 1001.88 ms. Allocated memory is still 109.1 MB. Free memory was 76.3 MB in the beginning and 71.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:46:05,042 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 109.1 MB. Free memory is still 63.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:46:05,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 999.12 ms. Allocated memory is still 109.1 MB. Free memory was 76.3 MB in the beginning and 71.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:46:05,047 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 109.1 MB. Free memory is still 63.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 999.12 ms. Allocated memory is still 109.1 MB. Free memory was 76.3 MB in the beginning and 71.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2512]: 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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/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 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:46:07,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:46:07,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:46:07,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:46:07,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:46:07,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:46:07,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:46:07,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:46:07,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:46:07,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:46:07,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:46:07,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:46:07,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:46:07,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:46:07,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:46:07,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:46:07,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:46:07,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:46:07,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:46:07,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:46:07,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:46:07,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:46:07,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:46:07,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:46:07,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:46:07,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:46:07,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:46:07,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:46:07,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:46:07,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:46:07,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:46:07,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:46:07,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:46:07,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:46:07,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:46:07,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:46:07,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:46:07,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:46:07,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:46:07,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:46:07,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:46:07,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:46:07,724 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:46:07,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:46:07,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:46:07,731 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:46:07,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:46:07,731 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:46:07,732 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:46:07,732 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:46:07,732 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:46:07,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:46:07,736 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:46:07,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:46:07,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:46:07,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:46:07,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:46:07,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:46:07,738 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:46:07,738 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:46:07,738 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:46:07,739 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:46:07,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:46:07,739 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:46:07,740 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:46:07,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:46:07,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:46:07,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:46:07,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:46:07,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:46:07,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:46:07,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:46:07,742 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:46:07,742 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:46:07,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:46:07,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:46:07,744 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:46:07,744 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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 339ae17141354782861ad14ce1f1515b53735bca35311ebbaf6a68a6022f4172 [2021-11-03 04:46:08,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:46:08,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:46:08,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:46:08,179 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:46:08,182 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:46:08,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2021-11-03 04:46:08,249 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/data/530f9c368/1980a8d826cf4e829d2c4bb1fabeacf2/FLAG3a6e0707c [2021-11-03 04:46:09,040 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:46:09,041 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c [2021-11-03 04:46:09,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/data/530f9c368/1980a8d826cf4e829d2c4bb1fabeacf2/FLAG3a6e0707c [2021-11-03 04:46:09,152 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/data/530f9c368/1980a8d826cf4e829d2c4bb1fabeacf2 [2021-11-03 04:46:09,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:46:09,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:46:09,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:46:09,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:46:09,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:46:09,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:46:09" (1/1) ... [2021-11-03 04:46:09,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78280765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:09, skipping insertion in model container [2021-11-03 04:46:09,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:46:09" (1/1) ... [2021-11-03 04:46:09,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:46:09,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:46:10,058 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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c[73050,73063] [2021-11-03 04:46:10,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:46:10,088 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:46:10,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:46:10,310 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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c[73050,73063] [2021-11-03 04:46:10,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:46:10,319 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:46:10,453 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_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/sv-benchmarks/c/product-lines/elevator_spec9_product28.cil.c[73050,73063] [2021-11-03 04:46:10,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:46:10,488 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:46:10,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10 WrapperNode [2021-11-03 04:46:10,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:46:10,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:46:10,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:46:10,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:46:10,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (1/1) ... [2021-11-03 04:46:10,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (1/1) ... [2021-11-03 04:46:11,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:46:11,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:46:11,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:46:11,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:46:11,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (1/1) ... [2021-11-03 04:46:11,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (1/1) ... [2021-11-03 04:46:11,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (1/1) ... [2021-11-03 04:46:11,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (1/1) ... [2021-11-03 04:46:11,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (1/1) ... [2021-11-03 04:46:11,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (1/1) ... [2021-11-03 04:46:11,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (1/1) ... [2021-11-03 04:46:11,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:46:11,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:46:11,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:46:11,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:46:11,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (1/1) ... [2021-11-03 04:46:11,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:46:11,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:46:11,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:46:11,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:46:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:46:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:46:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:46:12,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:46:27,062 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:46:27,062 INFO L299 CfgBuilder]: Removed 1233 assume(true) statements. [2021-11-03 04:46:27,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:46:27 BoogieIcfgContainer [2021-11-03 04:46:27,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:46:27,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:46:27,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:46:27,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:46:27,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:46:09" (1/3) ... [2021-11-03 04:46:27,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368f0d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:46:27, skipping insertion in model container [2021-11-03 04:46:27,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:46:10" (2/3) ... [2021-11-03 04:46:27,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@368f0d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:46:27, skipping insertion in model container [2021-11-03 04:46:27,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:46:27" (3/3) ... [2021-11-03 04:46:27,082 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product28.cil.c [2021-11-03 04:46:27,089 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:46:27,089 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 04:46:27,212 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:46:27,223 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 04:46:27,224 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 04:46:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 5044 states, 5038 states have (on average 1.8870583564906709) internal successors, (9507), 5043 states have internal predecessors, (9507), 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 04:46:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-03 04:46:27,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:27,402 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] [2021-11-03 04:46:27,403 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:27,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1878440157, now seen corresponding path program 1 times [2021-11-03 04:46:27,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:27,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663971218] [2021-11-03 04:46:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:27,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:27,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:27,432 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:27,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:46:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:27,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:46:27,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:27,899 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 04:46:27,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:27,953 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 04:46:27,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:27,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663971218] [2021-11-03 04:46:27,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663971218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:27,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:27,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:46:27,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716001152] [2021-11-03 04:46:27,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:46:27,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:46:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:46:28,002 INFO L87 Difference]: Start difference. First operand has 5044 states, 5038 states have (on average 1.8870583564906709) internal successors, (9507), 5043 states have internal predecessors, (9507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 04:46:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:28,230 INFO L93 Difference]: Finished difference Result 5063 states and 9530 transitions. [2021-11-03 04:46:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:46:28,231 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2021-11-03 04:46:28,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:28,293 INFO L225 Difference]: With dead ends: 5063 [2021-11-03 04:46:28,293 INFO L226 Difference]: Without dead ends: 5040 [2021-11-03 04:46:28,301 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:46:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2021-11-03 04:46:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 5040. [2021-11-03 04:46:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5040 states, 5035 states have (on average 1.8857994041708044) internal successors, (9495), 5039 states have internal predecessors, (9495), 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 04:46:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 9495 transitions. [2021-11-03 04:46:28,553 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 9495 transitions. Word has length 26 [2021-11-03 04:46:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:28,554 INFO L470 AbstractCegarLoop]: Abstraction has 5040 states and 9495 transitions. [2021-11-03 04:46:28,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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 04:46:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 9495 transitions. [2021-11-03 04:46:28,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-03 04:46:28,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:28,558 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] [2021-11-03 04:46:28,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:46:28,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:28,773 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:28,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1579316292, now seen corresponding path program 1 times [2021-11-03 04:46:28,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:28,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634606665] [2021-11-03 04:46:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:28,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:28,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:28,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:28,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:46:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:29,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:46:29,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:29,311 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 04:46:29,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:29,418 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 04:46:29,419 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:29,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634606665] [2021-11-03 04:46:29,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634606665] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:29,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:29,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:46:29,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962662194] [2021-11-03 04:46:29,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:46:29,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:29,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:46:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:46:29,428 INFO L87 Difference]: Start difference. First operand 5040 states and 9495 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 04:46:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:29,894 INFO L93 Difference]: Finished difference Result 10067 states and 18971 transitions. [2021-11-03 04:46:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:46:29,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 28 [2021-11-03 04:46:29,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:29,937 INFO L225 Difference]: With dead ends: 10067 [2021-11-03 04:46:29,937 INFO L226 Difference]: Without dead ends: 5040 [2021-11-03 04:46:29,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 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 04:46:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5040 states. [2021-11-03 04:46:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5040 to 5040. [2021-11-03 04:46:30,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5040 states, 5035 states have (on average 1.8846077457795432) internal successors, (9489), 5039 states have internal predecessors, (9489), 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 04:46:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5040 states to 5040 states and 9489 transitions. [2021-11-03 04:46:30,135 INFO L78 Accepts]: Start accepts. Automaton has 5040 states and 9489 transitions. Word has length 28 [2021-11-03 04:46:30,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:30,136 INFO L470 AbstractCegarLoop]: Abstraction has 5040 states and 9489 transitions. [2021-11-03 04:46:30,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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 04:46:30,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5040 states and 9489 transitions. [2021-11-03 04:46:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-03 04:46:30,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:30,150 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] [2021-11-03 04:46:30,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:46:30,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:30,364 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:30,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash 495072838, now seen corresponding path program 1 times [2021-11-03 04:46:30,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:30,366 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769593044] [2021-11-03 04:46:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:30,367 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:30,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:30,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:30,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:46:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:30,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:46:30,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:30,795 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 04:46:30,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:30,917 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 04:46:30,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:30,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769593044] [2021-11-03 04:46:30,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769593044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:30,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:30,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:46:30,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442131355] [2021-11-03 04:46:30,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:46:30,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:30,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:46:30,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:46:30,921 INFO L87 Difference]: Start difference. First operand 5040 states and 9489 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 04:46:31,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:31,374 INFO L93 Difference]: Finished difference Result 10031 states and 18894 transitions. [2021-11-03 04:46:31,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:46:31,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 33 [2021-11-03 04:46:31,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:31,418 INFO L225 Difference]: With dead ends: 10031 [2021-11-03 04:46:31,418 INFO L226 Difference]: Without dead ends: 5013 [2021-11-03 04:46:31,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:46:31,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-11-03 04:46:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2021-11-03 04:46:31,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.8835862619808306) internal successors, (9433), 5012 states have internal predecessors, (9433), 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 04:46:31,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9433 transitions. [2021-11-03 04:46:31,887 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9433 transitions. Word has length 33 [2021-11-03 04:46:31,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:31,887 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 9433 transitions. [2021-11-03 04:46:31,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 04:46:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9433 transitions. [2021-11-03 04:46:31,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:46:31,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:31,893 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] [2021-11-03 04:46:31,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:46:32,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:32,106 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:32,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:32,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1082837096, now seen corresponding path program 1 times [2021-11-03 04:46:32,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:32,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185674938] [2021-11-03 04:46:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:32,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:32,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:32,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:32,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:46:32,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:32,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:46:32,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:32,597 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 04:46:32,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:32,676 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 04:46:32,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:32,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185674938] [2021-11-03 04:46:32,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185674938] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:32,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:32,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:46:32,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565886044] [2021-11-03 04:46:32,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:46:32,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:32,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:46:32,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:46:32,680 INFO L87 Difference]: Start difference. First operand 5013 states and 9433 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 04:46:32,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:32,966 INFO L93 Difference]: Finished difference Result 10004 states and 18838 transitions. [2021-11-03 04:46:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:46:32,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 34 [2021-11-03 04:46:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:32,997 INFO L225 Difference]: With dead ends: 10004 [2021-11-03 04:46:32,997 INFO L226 Difference]: Without dead ends: 5013 [2021-11-03 04:46:33,005 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 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 04:46:33,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5013 states. [2021-11-03 04:46:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5013 to 5013. [2021-11-03 04:46:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5013 states, 5008 states have (on average 1.882388178913738) internal successors, (9427), 5012 states have internal predecessors, (9427), 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 04:46:33,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5013 states to 5013 states and 9427 transitions. [2021-11-03 04:46:33,306 INFO L78 Accepts]: Start accepts. Automaton has 5013 states and 9427 transitions. Word has length 34 [2021-11-03 04:46:33,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:33,307 INFO L470 AbstractCegarLoop]: Abstraction has 5013 states and 9427 transitions. [2021-11-03 04:46:33,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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 04:46:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 5013 states and 9427 transitions. [2021-11-03 04:46:33,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 04:46:33,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:33,311 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] [2021-11-03 04:46:33,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:46:33,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:33,525 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:33,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:33,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2109725255, now seen corresponding path program 1 times [2021-11-03 04:46:33,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:33,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099286205] [2021-11-03 04:46:33,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:33,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:33,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:33,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:33,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:46:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:33,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:46:33,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:34,134 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 04:46:34,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:34,291 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 04:46:34,292 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:34,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099286205] [2021-11-03 04:46:34,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099286205] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:34,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:34,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:46:34,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84307057] [2021-11-03 04:46:34,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:46:34,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:34,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:46:34,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:46:34,295 INFO L87 Difference]: Start difference. First operand 5013 states and 9427 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 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 04:46:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:35,271 INFO L93 Difference]: Finished difference Result 9998 states and 18821 transitions. [2021-11-03 04:46:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:46:35,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 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 39 [2021-11-03 04:46:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:35,315 INFO L225 Difference]: With dead ends: 9998 [2021-11-03 04:46:35,316 INFO L226 Difference]: Without dead ends: 5010 [2021-11-03 04:46:35,326 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:46:35,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2021-11-03 04:46:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 5010. [2021-11-03 04:46:35,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 5005 states have (on average 1.8819180819180819) internal successors, (9419), 5009 states have internal predecessors, (9419), 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 04:46:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 9419 transitions. [2021-11-03 04:46:35,654 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 9419 transitions. Word has length 39 [2021-11-03 04:46:35,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:35,654 INFO L470 AbstractCegarLoop]: Abstraction has 5010 states and 9419 transitions. [2021-11-03 04:46:35,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 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 04:46:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 9419 transitions. [2021-11-03 04:46:35,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-03 04:46:35,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:35,656 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] [2021-11-03 04:46:35,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:46:35,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:35,871 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:35,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:35,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1884692599, now seen corresponding path program 1 times [2021-11-03 04:46:35,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:35,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933338751] [2021-11-03 04:46:35,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:35,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:35,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:35,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:35,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:46:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:36,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:46:36,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:36,809 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 04:46:36,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:37,021 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 04:46:37,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:37,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933338751] [2021-11-03 04:46:37,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933338751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:37,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:37,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:46:37,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860207567] [2021-11-03 04:46:37,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:46:37,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:46:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:46:37,025 INFO L87 Difference]: Start difference. First operand 5010 states and 9419 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 04:46:38,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:38,134 INFO L93 Difference]: Finished difference Result 13664 states and 25771 transitions. [2021-11-03 04:46:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:46:38,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 40 [2021-11-03 04:46:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:38,166 INFO L225 Difference]: With dead ends: 13664 [2021-11-03 04:46:38,166 INFO L226 Difference]: Without dead ends: 11117 [2021-11-03 04:46:38,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 76 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 04:46:38,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11117 states. [2021-11-03 04:46:38,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11117 to 6616. [2021-11-03 04:46:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6616 states, 6611 states have (on average 1.884435032521555) internal successors, (12458), 6615 states have internal predecessors, (12458), 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 04:46:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6616 states to 6616 states and 12458 transitions. [2021-11-03 04:46:38,550 INFO L78 Accepts]: Start accepts. Automaton has 6616 states and 12458 transitions. Word has length 40 [2021-11-03 04:46:38,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:38,551 INFO L470 AbstractCegarLoop]: Abstraction has 6616 states and 12458 transitions. [2021-11-03 04:46:38,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 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 04:46:38,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6616 states and 12458 transitions. [2021-11-03 04:46:38,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 04:46:38,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:38,557 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 04:46:38,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:46:38,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:38,771 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:38,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1187864016, now seen corresponding path program 1 times [2021-11-03 04:46:38,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:38,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710744750] [2021-11-03 04:46:38,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:38,774 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:38,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:38,775 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:38,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:46:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:39,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:46:39,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:39,533 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 04:46:39,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:39,807 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 04:46:39,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:39,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710744750] [2021-11-03 04:46:39,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710744750] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:39,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:39,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:46:39,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930256810] [2021-11-03 04:46:39,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:46:39,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:39,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:46:39,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:46:39,811 INFO L87 Difference]: Start difference. First operand 6616 states and 12458 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 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 04:46:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:40,627 INFO L93 Difference]: Finished difference Result 12544 states and 23430 transitions. [2021-11-03 04:46:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:46:40,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 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 04:46:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:40,653 INFO L225 Difference]: With dead ends: 12544 [2021-11-03 04:46:40,653 INFO L226 Difference]: Without dead ends: 7173 [2021-11-03 04:46:40,664 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:46:40,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7173 states. [2021-11-03 04:46:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7173 to 4905. [2021-11-03 04:46:40,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4905 states, 4900 states have (on average 1.8787755102040817) internal successors, (9206), 4904 states have internal predecessors, (9206), 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 04:46:41,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4905 states to 4905 states and 9206 transitions. [2021-11-03 04:46:41,003 INFO L78 Accepts]: Start accepts. Automaton has 4905 states and 9206 transitions. Word has length 59 [2021-11-03 04:46:41,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:41,004 INFO L470 AbstractCegarLoop]: Abstraction has 4905 states and 9206 transitions. [2021-11-03 04:46:41,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 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 04:46:41,004 INFO L276 IsEmpty]: Start isEmpty. Operand 4905 states and 9206 transitions. [2021-11-03 04:46:41,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 04:46:41,007 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:41,008 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 04:46:41,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 04:46:41,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:41,225 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:41,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:41,226 INFO L85 PathProgramCache]: Analyzing trace with hash -775984150, now seen corresponding path program 1 times [2021-11-03 04:46:41,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:41,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100386318] [2021-11-03 04:46:41,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:41,228 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:41,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:41,230 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:41,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:46:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:41,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:46:41,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:42,115 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 04:46:42,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:42,371 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 04:46:42,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:42,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100386318] [2021-11-03 04:46:42,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100386318] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:42,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:42,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:46:42,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021911218] [2021-11-03 04:46:42,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:46:42,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:46:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:46:42,374 INFO L87 Difference]: Start difference. First operand 4905 states and 9206 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 04:46:45,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:45,280 INFO L93 Difference]: Finished difference Result 18249 states and 34316 transitions. [2021-11-03 04:46:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:46:45,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 60 [2021-11-03 04:46:45,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:45,329 INFO L225 Difference]: With dead ends: 18249 [2021-11-03 04:46:45,329 INFO L226 Difference]: Without dead ends: 13378 [2021-11-03 04:46:45,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:46:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13378 states. [2021-11-03 04:46:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13378 to 4905. [2021-11-03 04:46:45,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4905 states, 4900 states have (on average 1.8440816326530611) internal successors, (9036), 4904 states have internal predecessors, (9036), 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 04:46:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4905 states to 4905 states and 9036 transitions. [2021-11-03 04:46:45,751 INFO L78 Accepts]: Start accepts. Automaton has 4905 states and 9036 transitions. Word has length 60 [2021-11-03 04:46:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:45,752 INFO L470 AbstractCegarLoop]: Abstraction has 4905 states and 9036 transitions. [2021-11-03 04:46:45,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 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 04:46:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4905 states and 9036 transitions. [2021-11-03 04:46:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 04:46:45,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:45,755 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:46:45,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:46:45,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:45,974 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:45,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:45,974 INFO L85 PathProgramCache]: Analyzing trace with hash 770168190, now seen corresponding path program 1 times [2021-11-03 04:46:45,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:45,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74494368] [2021-11-03 04:46:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:45,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:45,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:45,978 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:46,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:46:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:46,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:46:46,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:46,801 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 04:46:46,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:47,021 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 04:46:47,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:47,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74494368] [2021-11-03 04:46:47,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74494368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:47,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:47,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:46:47,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251304856] [2021-11-03 04:46:47,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:46:47,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:47,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:46:47,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:46:47,023 INFO L87 Difference]: Start difference. First operand 4905 states and 9036 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 04:46:48,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:48,986 INFO L93 Difference]: Finished difference Result 13936 states and 25867 transitions. [2021-11-03 04:46:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:46:48,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2021-11-03 04:46:48,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:49,017 INFO L225 Difference]: With dead ends: 13936 [2021-11-03 04:46:49,017 INFO L226 Difference]: Without dead ends: 9083 [2021-11-03 04:46:49,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:46:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9083 states. [2021-11-03 04:46:49,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9083 to 4837. [2021-11-03 04:46:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4837 states, 4832 states have (on average 1.8443708609271523) internal successors, (8912), 4836 states have internal predecessors, (8912), 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 04:46:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4837 states to 4837 states and 8912 transitions. [2021-11-03 04:46:49,370 INFO L78 Accepts]: Start accepts. Automaton has 4837 states and 8912 transitions. Word has length 68 [2021-11-03 04:46:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:49,371 INFO L470 AbstractCegarLoop]: Abstraction has 4837 states and 8912 transitions. [2021-11-03 04:46:49,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 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 04:46:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4837 states and 8912 transitions. [2021-11-03 04:46:49,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:46:49,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:49,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:46:49,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:46:49,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:49,590 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:49,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1025799714, now seen corresponding path program 1 times [2021-11-03 04:46:49,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:49,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519179046] [2021-11-03 04:46:49,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:49,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:49,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:49,593 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:49,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:46:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:50,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:46:50,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:50,490 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 04:46:50,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:50,715 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 04:46:50,715 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:50,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519179046] [2021-11-03 04:46:50,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519179046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:50,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:50,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:46:50,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010120429] [2021-11-03 04:46:50,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:46:50,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:50,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:46:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:46:50,718 INFO L87 Difference]: Start difference. First operand 4837 states and 8912 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 04:46:53,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:53,089 INFO L93 Difference]: Finished difference Result 19210 states and 35567 transitions. [2021-11-03 04:46:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:46:53,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 70 [2021-11-03 04:46:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:53,140 INFO L225 Difference]: With dead ends: 19210 [2021-11-03 04:46:53,140 INFO L226 Difference]: Without dead ends: 14424 [2021-11-03 04:46:53,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:46:53,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14424 states. [2021-11-03 04:46:53,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14424 to 4845. [2021-11-03 04:46:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 4840 states have (on average 1.8429752066115703) internal successors, (8920), 4844 states have internal predecessors, (8920), 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 04:46:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 8920 transitions. [2021-11-03 04:46:53,573 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 8920 transitions. Word has length 70 [2021-11-03 04:46:53,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:53,574 INFO L470 AbstractCegarLoop]: Abstraction has 4845 states and 8920 transitions. [2021-11-03 04:46:53,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 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 04:46:53,574 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 8920 transitions. [2021-11-03 04:46:53,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:46:53,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:53,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:46:53,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:46:53,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:53,796 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:53,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:53,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1476834457, now seen corresponding path program 1 times [2021-11-03 04:46:53,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:53,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481430779] [2021-11-03 04:46:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:53,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:53,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:53,800 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:53,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:46:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:54,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:46:54,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:54,687 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 04:46:54,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:54,967 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 04:46:54,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:54,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481430779] [2021-11-03 04:46:54,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481430779] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:54,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:54,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:46:54,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928790912] [2021-11-03 04:46:54,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:46:54,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:54,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:46:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:46:54,970 INFO L87 Difference]: Start difference. First operand 4845 states and 8920 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 04:46:57,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:46:57,014 INFO L93 Difference]: Finished difference Result 13857 states and 25616 transitions. [2021-11-03 04:46:57,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:46:57,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2021-11-03 04:46:57,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:46:57,044 INFO L225 Difference]: With dead ends: 13857 [2021-11-03 04:46:57,044 INFO L226 Difference]: Without dead ends: 9050 [2021-11-03 04:46:57,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:46:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9050 states. [2021-11-03 04:46:57,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9050 to 6214. [2021-11-03 04:46:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6214 states, 6209 states have (on average 1.8286358511837655) internal successors, (11354), 6213 states have internal predecessors, (11354), 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 04:46:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6214 states to 6214 states and 11354 transitions. [2021-11-03 04:46:57,437 INFO L78 Accepts]: Start accepts. Automaton has 6214 states and 11354 transitions. Word has length 71 [2021-11-03 04:46:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:46:57,438 INFO L470 AbstractCegarLoop]: Abstraction has 6214 states and 11354 transitions. [2021-11-03 04:46:57,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 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 04:46:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6214 states and 11354 transitions. [2021-11-03 04:46:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:46:57,441 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:46:57,442 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:46:57,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:46:57,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:46:57,659 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:46:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:46:57,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1865794529, now seen corresponding path program 1 times [2021-11-03 04:46:57,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:46:57,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749348974] [2021-11-03 04:46:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:46:57,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:46:57,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:46:57,662 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:46:57,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:46:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:46:58,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:46:58,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:46:58,582 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 04:46:58,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:46:58,813 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 04:46:58,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:46:58,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749348974] [2021-11-03 04:46:58,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749348974] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:46:58,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:46:58,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:46:58,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858078482] [2021-11-03 04:46:58,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:46:58,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:46:58,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:46:58,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:46:58,816 INFO L87 Difference]: Start difference. First operand 6214 states and 11354 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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 04:47:01,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:01,090 INFO L93 Difference]: Finished difference Result 46777 states and 85780 transitions. [2021-11-03 04:47:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:47:01,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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 73 [2021-11-03 04:47:01,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:01,209 INFO L225 Difference]: With dead ends: 46777 [2021-11-03 04:47:01,210 INFO L226 Difference]: Without dead ends: 40610 [2021-11-03 04:47:01,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 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 04:47:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40610 states. [2021-11-03 04:47:02,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40610 to 11441. [2021-11-03 04:47:02,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11441 states, 11436 states have (on average 1.833770549143057) internal successors, (20971), 11440 states have internal predecessors, (20971), 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 04:47:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11441 states to 11441 states and 20971 transitions. [2021-11-03 04:47:02,307 INFO L78 Accepts]: Start accepts. Automaton has 11441 states and 20971 transitions. Word has length 73 [2021-11-03 04:47:02,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:02,308 INFO L470 AbstractCegarLoop]: Abstraction has 11441 states and 20971 transitions. [2021-11-03 04:47:02,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 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 04:47:02,308 INFO L276 IsEmpty]: Start isEmpty. Operand 11441 states and 20971 transitions. [2021-11-03 04:47:02,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:47:02,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:02,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:47:02,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:02,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:02,526 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:47:02,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1164194655, now seen corresponding path program 1 times [2021-11-03 04:47:02,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:02,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606395554] [2021-11-03 04:47:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:02,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:02,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:02,530 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:02,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:47:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:03,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:47:03,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:03,548 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 04:47:03,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:03,787 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 04:47:03,787 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:03,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606395554] [2021-11-03 04:47:03,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606395554] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:03,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:03,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:47:03,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801187784] [2021-11-03 04:47:03,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:47:03,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:03,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:47:03,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:47:03,791 INFO L87 Difference]: Start difference. First operand 11441 states and 20971 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 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 04:47:05,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:05,376 INFO L93 Difference]: Finished difference Result 24150 states and 44294 transitions. [2021-11-03 04:47:05,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:47:05,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2021-11-03 04:47:05,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:05,413 INFO L225 Difference]: With dead ends: 24150 [2021-11-03 04:47:05,413 INFO L226 Difference]: Without dead ends: 17400 [2021-11-03 04:47:05,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:47:05,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17400 states. [2021-11-03 04:47:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17400 to 11425. [2021-11-03 04:47:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11425 states, 11420 states have (on average 1.83353765323993) internal successors, (20939), 11424 states have internal predecessors, (20939), 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 04:47:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11425 states to 11425 states and 20939 transitions. [2021-11-03 04:47:06,107 INFO L78 Accepts]: Start accepts. Automaton has 11425 states and 20939 transitions. Word has length 73 [2021-11-03 04:47:06,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:06,107 INFO L470 AbstractCegarLoop]: Abstraction has 11425 states and 20939 transitions. [2021-11-03 04:47:06,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 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 04:47:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 11425 states and 20939 transitions. [2021-11-03 04:47:06,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 04:47:06,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:06,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:47:06,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:47:06,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:06,344 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:47:06,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1468079589, now seen corresponding path program 1 times [2021-11-03 04:47:06,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:06,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153259081] [2021-11-03 04:47:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:06,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:06,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:06,349 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:06,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:47:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:07,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:47:07,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:07,356 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 04:47:07,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:07,643 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 04:47:07,643 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:07,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153259081] [2021-11-03 04:47:07,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153259081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:07,643 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:07,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:47:07,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281030248] [2021-11-03 04:47:07,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:47:07,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:07,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:47:07,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:47:07,646 INFO L87 Difference]: Start difference. First operand 11425 states and 20939 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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 04:47:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:09,973 INFO L93 Difference]: Finished difference Result 45677 states and 84177 transitions. [2021-11-03 04:47:09,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:47:09,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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 75 [2021-11-03 04:47:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:10,040 INFO L225 Difference]: With dead ends: 45677 [2021-11-03 04:47:10,041 INFO L226 Difference]: Without dead ends: 38939 [2021-11-03 04:47:10,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 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 04:47:10,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38939 states. [2021-11-03 04:47:11,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38939 to 17614. [2021-11-03 04:47:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17614 states, 17609 states have (on average 1.832244874779942) internal successors, (32264), 17613 states have internal predecessors, (32264), 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 04:47:11,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17614 states to 17614 states and 32264 transitions. [2021-11-03 04:47:11,473 INFO L78 Accepts]: Start accepts. Automaton has 17614 states and 32264 transitions. Word has length 75 [2021-11-03 04:47:11,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:11,473 INFO L470 AbstractCegarLoop]: Abstraction has 17614 states and 32264 transitions. [2021-11-03 04:47:11,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 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 04:47:11,474 INFO L276 IsEmpty]: Start isEmpty. Operand 17614 states and 32264 transitions. [2021-11-03 04:47:11,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:47:11,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:11,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:47:11,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-03 04:47:11,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:11,710 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:47:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:11,710 INFO L85 PathProgramCache]: Analyzing trace with hash 166721479, now seen corresponding path program 1 times [2021-11-03 04:47:11,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:11,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413202321] [2021-11-03 04:47:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:11,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:11,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:11,712 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:11,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:47:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:12,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:47:12,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:12,762 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 04:47:12,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:13,094 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 04:47:13,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:13,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413202321] [2021-11-03 04:47:13,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413202321] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:13,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:13,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:47:13,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110937220] [2021-11-03 04:47:13,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:47:13,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:47:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:47:13,097 INFO L87 Difference]: Start difference. First operand 17614 states and 32264 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 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 04:47:19,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:19,718 INFO L93 Difference]: Finished difference Result 97579 states and 179846 transitions. [2021-11-03 04:47:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:47:19,718 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 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 77 [2021-11-03 04:47:19,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:19,851 INFO L225 Difference]: With dead ends: 97579 [2021-11-03 04:47:19,851 INFO L226 Difference]: Without dead ends: 84652 [2021-11-03 04:47:19,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:47:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84652 states. [2021-11-03 04:47:22,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84652 to 28564. [2021-11-03 04:47:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28564 states, 28559 states have (on average 1.8399803914702895) internal successors, (52548), 28563 states have internal predecessors, (52548), 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 04:47:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28564 states to 28564 states and 52548 transitions. [2021-11-03 04:47:22,520 INFO L78 Accepts]: Start accepts. Automaton has 28564 states and 52548 transitions. Word has length 77 [2021-11-03 04:47:22,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:22,520 INFO L470 AbstractCegarLoop]: Abstraction has 28564 states and 52548 transitions. [2021-11-03 04:47:22,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 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 04:47:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 28564 states and 52548 transitions. [2021-11-03 04:47:22,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 04:47:22,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:22,524 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, 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 04:47:22,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:22,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:22,725 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:47:22,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:22,725 INFO L85 PathProgramCache]: Analyzing trace with hash -83573634, now seen corresponding path program 1 times [2021-11-03 04:47:22,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:22,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051981016] [2021-11-03 04:47:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:22,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:22,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:22,728 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:22,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:47:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:23,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:47:23,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:23,739 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 04:47:23,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:23,912 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 04:47:23,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:23,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051981016] [2021-11-03 04:47:23,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051981016] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:23,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:23,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:47:23,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924404418] [2021-11-03 04:47:23,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:47:23,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:23,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:47:23,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:47:23,914 INFO L87 Difference]: Start difference. First operand 28564 states and 52548 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 04:47:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:26,139 INFO L93 Difference]: Finished difference Result 52573 states and 96587 transitions. [2021-11-03 04:47:26,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:47:26,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 84 [2021-11-03 04:47:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:26,177 INFO L225 Difference]: With dead ends: 52573 [2021-11-03 04:47:26,177 INFO L226 Difference]: Without dead ends: 28579 [2021-11-03 04:47:26,188 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:47:26,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28579 states. [2021-11-03 04:47:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28579 to 28564. [2021-11-03 04:47:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28564 states, 28559 states have (on average 1.833117406071641) internal successors, (52352), 28563 states have internal predecessors, (52352), 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 04:47:28,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28564 states to 28564 states and 52352 transitions. [2021-11-03 04:47:28,326 INFO L78 Accepts]: Start accepts. Automaton has 28564 states and 52352 transitions. Word has length 84 [2021-11-03 04:47:28,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:28,326 INFO L470 AbstractCegarLoop]: Abstraction has 28564 states and 52352 transitions. [2021-11-03 04:47:28,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 04:47:28,326 INFO L276 IsEmpty]: Start isEmpty. Operand 28564 states and 52352 transitions. [2021-11-03 04:47:28,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 04:47:28,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:28,330 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, 1, 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 04:47:28,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:28,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:28,531 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:47:28,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:28,532 INFO L85 PathProgramCache]: Analyzing trace with hash -562823902, now seen corresponding path program 1 times [2021-11-03 04:47:28,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:28,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711433158] [2021-11-03 04:47:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:28,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:28,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:28,535 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:28,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:47:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:29,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:47:29,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:29,540 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 04:47:29,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:29,819 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 04:47:29,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:29,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711433158] [2021-11-03 04:47:29,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711433158] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:29,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:29,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:47:29,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993297009] [2021-11-03 04:47:29,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:47:29,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:29,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:47:29,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:47:29,822 INFO L87 Difference]: Start difference. First operand 28564 states and 52352 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 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 04:47:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:35,716 INFO L93 Difference]: Finished difference Result 83105 states and 152092 transitions. [2021-11-03 04:47:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:47:35,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 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 85 [2021-11-03 04:47:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:35,807 INFO L225 Difference]: With dead ends: 83105 [2021-11-03 04:47:35,807 INFO L226 Difference]: Without dead ends: 59449 [2021-11-03 04:47:35,827 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:47:35,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59449 states. [2021-11-03 04:47:37,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59449 to 23780. [2021-11-03 04:47:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23780 states, 23775 states have (on average 1.823385909568875) internal successors, (43351), 23779 states have internal predecessors, (43351), 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 04:47:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23780 states to 23780 states and 43351 transitions. [2021-11-03 04:47:37,787 INFO L78 Accepts]: Start accepts. Automaton has 23780 states and 43351 transitions. Word has length 85 [2021-11-03 04:47:37,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:37,788 INFO L470 AbstractCegarLoop]: Abstraction has 23780 states and 43351 transitions. [2021-11-03 04:47:37,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 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 04:47:37,788 INFO L276 IsEmpty]: Start isEmpty. Operand 23780 states and 43351 transitions. [2021-11-03 04:47:37,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 04:47:37,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:37,792 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, 1, 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 04:47:37,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:38,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:38,002 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:47:38,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:38,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1149629916, now seen corresponding path program 1 times [2021-11-03 04:47:38,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:38,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226659895] [2021-11-03 04:47:38,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:38,003 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:38,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:38,004 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:38,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 04:47:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:38,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:47:38,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:39,179 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 04:47:39,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:39,481 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 04:47:39,482 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:39,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226659895] [2021-11-03 04:47:39,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226659895] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:39,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:39,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:47:39,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826739044] [2021-11-03 04:47:39,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:47:39,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:47:39,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:47:39,485 INFO L87 Difference]: Start difference. First operand 23780 states and 43351 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 04:47:44,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:47:44,069 INFO L93 Difference]: Finished difference Result 91277 states and 166405 transitions. [2021-11-03 04:47:44,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:47:44,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 85 [2021-11-03 04:47:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:47:44,174 INFO L225 Difference]: With dead ends: 91277 [2021-11-03 04:47:44,174 INFO L226 Difference]: Without dead ends: 67706 [2021-11-03 04:47:44,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 166 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 04:47:44,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67706 states. [2021-11-03 04:47:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67706 to 67676. [2021-11-03 04:47:48,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67676 states, 67671 states have (on average 1.8186076753705427) internal successors, (123067), 67675 states have internal predecessors, (123067), 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 04:47:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67676 states to 67676 states and 123067 transitions. [2021-11-03 04:47:49,067 INFO L78 Accepts]: Start accepts. Automaton has 67676 states and 123067 transitions. Word has length 85 [2021-11-03 04:47:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:47:49,067 INFO L470 AbstractCegarLoop]: Abstraction has 67676 states and 123067 transitions. [2021-11-03 04:47:49,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 3 states have internal predecessors, (162), 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 04:47:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand 67676 states and 123067 transitions. [2021-11-03 04:47:49,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 04:47:49,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:47:49,072 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, 1, 1, 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 04:47:49,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 04:47:49,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:47:49,284 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:47:49,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:47:49,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1484252967, now seen corresponding path program 1 times [2021-11-03 04:47:49,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:47:49,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022344488] [2021-11-03 04:47:49,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:47:49,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:47:49,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:47:49,286 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:47:49,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3daa6b-5a28-4287-b85a-0cee7e5bf9f0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-03 04:47:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:47:50,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:47:50,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:47:50,497 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 04:47:50,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:47:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:47:50,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:47:50,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022344488] [2021-11-03 04:47:50,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022344488] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:47:50,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:47:50,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:47:50,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798367626] [2021-11-03 04:47:50,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:47:50,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:47:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:47:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:47:50,805 INFO L87 Difference]: Start difference. First operand 67676 states and 123067 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 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)