./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_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_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/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_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/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_e2165229-7417-4239-b56b-7722efda4af2/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 cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:22:27,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:22:27,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:22:27,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:22:27,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:22:27,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:22:27,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:22:27,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:22:27,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:22:27,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:22:27,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:22:27,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:22:27,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:22:27,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:22:27,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:22:27,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:22:27,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:22:27,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:22:27,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:22:27,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:22:27,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:22:27,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:22:27,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:22:27,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:22:27,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:22:27,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:22:27,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:22:27,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:22:27,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:22:27,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:22:27,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:22:27,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:22:27,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:22:27,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:22:27,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:22:27,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:22:27,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:22:27,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:22:27,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:22:27,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:22:27,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:22:27,711 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:22:27,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:22:27,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:22:27,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:22:27,739 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:22:27,739 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:22:27,740 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:22:27,740 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:22:27,740 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:22:27,740 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:22:27,740 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:22:27,741 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:22:27,741 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:22:27,741 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:22:27,741 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:22:27,741 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:22:27,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:22:27,742 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:22:27,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:22:27,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:22:27,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:22:27,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:22:27,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:22:27,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:22:27,743 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:22:27,744 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:22:27,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:22:27,744 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:22:27,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:22:27,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:22:27,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:22:27,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:27,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:22:27,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:22:27,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:22:27,746 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:22:27,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:22:27,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:22:27,746 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:22:27,746 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:22:27,747 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_e2165229-7417-4239-b56b-7722efda4af2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 [2021-11-03 04:22:28,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:22:28,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:22:28,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:22:28,092 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:22:28,093 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:22:28,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2021-11-03 04:22:28,155 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/data/395bf2bbb/4a51a3c85fe84e4b86d047a43f558edd/FLAG99830152e [2021-11-03 04:22:28,742 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:22:28,743 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2021-11-03 04:22:28,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/data/395bf2bbb/4a51a3c85fe84e4b86d047a43f558edd/FLAG99830152e [2021-11-03 04:22:28,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/data/395bf2bbb/4a51a3c85fe84e4b86d047a43f558edd [2021-11-03 04:22:28,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:22:28,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:22:28,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:28,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:22:28,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:22:28,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:28" (1/1) ... [2021-11-03 04:22:28,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53055189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:28, skipping insertion in model container [2021-11-03 04:22:28,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:28" (1/1) ... [2021-11-03 04:22:28,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:22:29,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:29,756 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_e2165229-7417-4239-b56b-7722efda4af2/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2021-11-03 04:22:29,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:29,776 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 04:22:29,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31370802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:29, skipping insertion in model container [2021-11-03 04:22:29,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:29,777 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:22:29,780 INFO L168 Benchmark]: Toolchain (without parser) took 813.68 ms. Allocated memory is still 107.0 MB. Free memory was 64.5 MB in the beginning and 66.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:29,781 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 83.4 MB in the end (delta: 53.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:22:29,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.41 ms. Allocated memory is still 107.0 MB. Free memory was 64.2 MB in the beginning and 66.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:22:29,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 83.4 MB in the end (delta: 53.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 810.41 ms. Allocated memory is still 107.0 MB. Free memory was 64.2 MB in the beginning and 66.6 MB in the end (delta: -2.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1876]: 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_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/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_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/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_e2165229-7417-4239-b56b-7722efda4af2/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 cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:22:32,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:22:32,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:22:32,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:22:32,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:22:32,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:22:32,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:22:32,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:22:32,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:22:32,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:22:32,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:22:32,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:22:32,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:22:32,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:22:32,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:22:32,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:22:32,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:22:32,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:22:32,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:22:32,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:22:32,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:22:32,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:22:32,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:22:32,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:22:32,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:22:32,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:22:32,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:22:32,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:22:32,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:22:32,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:22:32,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:22:32,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:22:32,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:22:32,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:22:32,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:22:32,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:22:32,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:22:32,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:22:32,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:22:32,293 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:22:32,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:22:32,295 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:22:32,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:22:32,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:22:32,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:22:32,344 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:22:32,345 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:22:32,345 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:22:32,345 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:22:32,345 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:22:32,346 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:22:32,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:22:32,348 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:22:32,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:22:32,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:22:32,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:22:32,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:22:32,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:22:32,350 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:22:32,350 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:22:32,351 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:22:32,351 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:22:32,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:22:32,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:22:32,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:22:32,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:22:32,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:22:32,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:22:32,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:32,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:22:32,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:22:32,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:22:32,354 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:22:32,354 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:22:32,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:22:32,355 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:22:32,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:22:32,355 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_e2165229-7417-4239-b56b-7722efda4af2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 [2021-11-03 04:22:32,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:22:32,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:22:32,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:22:32,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:22:32,799 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:22:32,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2021-11-03 04:22:32,880 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/data/968395b31/65694fb997cd4185a75082b9869c0409/FLAG4b6bea460 [2021-11-03 04:22:33,682 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:22:33,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2021-11-03 04:22:33,707 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/data/968395b31/65694fb997cd4185a75082b9869c0409/FLAG4b6bea460 [2021-11-03 04:22:33,822 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/data/968395b31/65694fb997cd4185a75082b9869c0409 [2021-11-03 04:22:33,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:22:33,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:22:33,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:33,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:22:33,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:22:33,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:33" (1/1) ... [2021-11-03 04:22:33,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fa6ce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:33, skipping insertion in model container [2021-11-03 04:22:33,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:22:33" (1/1) ... [2021-11-03 04:22:33,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:22:33,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:34,689 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_e2165229-7417-4239-b56b-7722efda4af2/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2021-11-03 04:22:34,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:34,718 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:22:34,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:22:34,849 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_e2165229-7417-4239-b56b-7722efda4af2/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2021-11-03 04:22:34,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:34,861 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:22:34,990 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_e2165229-7417-4239-b56b-7722efda4af2/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2021-11-03 04:22:34,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:22:35,024 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:22:35,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35 WrapperNode [2021-11-03 04:22:35,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:22:35,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:22:35,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:22:35,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:22:35,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (1/1) ... [2021-11-03 04:22:35,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (1/1) ... [2021-11-03 04:22:35,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:22:35,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:22:35,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:22:35,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:22:35,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (1/1) ... [2021-11-03 04:22:35,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (1/1) ... [2021-11-03 04:22:36,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (1/1) ... [2021-11-03 04:22:36,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (1/1) ... [2021-11-03 04:22:36,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (1/1) ... [2021-11-03 04:22:37,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (1/1) ... [2021-11-03 04:22:37,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (1/1) ... [2021-11-03 04:22:37,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:22:37,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:22:37,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:22:37,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:22:37,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (1/1) ... [2021-11-03 04:22:37,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:22:37,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:22:37,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:22:37,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:22:37,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:22:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:22:37,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:22:37,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:23:01,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:23:01,368 INFO L299 CfgBuilder]: Removed 3017 assume(true) statements. [2021-11-03 04:23:01,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:23:01 BoogieIcfgContainer [2021-11-03 04:23:01,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:23:01,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:23:01,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:23:01,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:23:01,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:22:33" (1/3) ... [2021-11-03 04:23:01,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c072373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:23:01, skipping insertion in model container [2021-11-03 04:23:01,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:22:35" (2/3) ... [2021-11-03 04:23:01,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c072373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:23:01, skipping insertion in model container [2021-11-03 04:23:01,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:23:01" (3/3) ... [2021-11-03 04:23:01,389 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2021-11-03 04:23:01,395 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:23:01,395 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-03 04:23:01,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:23:01,487 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 04:23:01,487 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-03 04:23:01,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 12523 states, 12512 states have (on average 1.8837915601023019) internal successors, (23570), 12522 states have internal predecessors, (23570), 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 04:23:01,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-03 04:23:01,698 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:01,698 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] [2021-11-03 04:23:01,699 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:01,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:01,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1872061796, now seen corresponding path program 1 times [2021-11-03 04:23:01,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:01,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742934522] [2021-11-03 04:23:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:01,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:01,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:01,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:01,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:23:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:02,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:23:02,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:02,335 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 04:23:02,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:02,451 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 04:23:02,452 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:02,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742934522] [2021-11-03 04:23:02,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742934522] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:02,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:02,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:23:02,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998774961] [2021-11-03 04:23:02,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:23:02,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:23:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:23:02,529 INFO L87 Difference]: Start difference. First operand has 12523 states, 12512 states have (on average 1.8837915601023019) internal successors, (23570), 12522 states have internal predecessors, (23570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 04:23:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:07,192 INFO L93 Difference]: Finished difference Result 87283 states and 164271 transitions. [2021-11-03 04:23:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 04:23:07,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 30 [2021-11-03 04:23:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:07,643 INFO L225 Difference]: With dead ends: 87283 [2021-11-03 04:23:07,644 INFO L226 Difference]: Without dead ends: 74761 [2021-11-03 04:23:07,689 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:23:08,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74761 states. [2021-11-03 04:23:08,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74761 to 12535. [2021-11-03 04:23:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12535 states, 12525 states have (on average 1.8815968063872255) internal successors, (23567), 12534 states have internal predecessors, (23567), 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 04:23:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12535 states to 12535 states and 23567 transitions. [2021-11-03 04:23:08,976 INFO L78 Accepts]: Start accepts. Automaton has 12535 states and 23567 transitions. Word has length 30 [2021-11-03 04:23:08,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:08,976 INFO L470 AbstractCegarLoop]: Abstraction has 12535 states and 23567 transitions. [2021-11-03 04:23:08,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 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 04:23:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand 12535 states and 23567 transitions. [2021-11-03 04:23:08,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 04:23:08,988 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:08,988 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] [2021-11-03 04:23:09,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 04:23:09,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:09,202 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:09,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1550710714, now seen corresponding path program 1 times [2021-11-03 04:23:09,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:09,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400825481] [2021-11-03 04:23:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:09,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:09,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:09,212 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:09,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:23:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:09,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:09,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:09,693 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 04:23:09,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:09,811 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 04:23:09,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:09,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400825481] [2021-11-03 04:23:09,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400825481] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:09,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:09,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:23:09,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466829947] [2021-11-03 04:23:09,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:23:09,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:23:09,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:23:09,822 INFO L87 Difference]: Start difference. First operand 12535 states and 23567 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 04:23:10,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:10,206 INFO L93 Difference]: Finished difference Result 24982 states and 46977 transitions. [2021-11-03 04:23:10,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:23:10,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2021-11-03 04:23:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:10,251 INFO L225 Difference]: With dead ends: 24982 [2021-11-03 04:23:10,251 INFO L226 Difference]: Without dead ends: 12461 [2021-11-03 04:23:10,273 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:23:10,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12461 states. [2021-11-03 04:23:10,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12461 to 12461. [2021-11-03 04:23:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12461 states, 12451 states have (on average 1.881214360292346) internal successors, (23423), 12460 states have internal predecessors, (23423), 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 04:23:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 23423 transitions. [2021-11-03 04:23:10,647 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 23423 transitions. Word has length 32 [2021-11-03 04:23:10,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:10,649 INFO L470 AbstractCegarLoop]: Abstraction has 12461 states and 23423 transitions. [2021-11-03 04:23:10,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 04:23:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 23423 transitions. [2021-11-03 04:23:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-03 04:23:10,651 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:10,658 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 04:23:10,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:10,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:10,873 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:10,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:10,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1974581796, now seen corresponding path program 1 times [2021-11-03 04:23:10,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:10,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366165141] [2021-11-03 04:23:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:10,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:10,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:10,888 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:10,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:23:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:11,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:23:11,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:11,324 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 04:23:11,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:11,446 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 04:23:11,446 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:11,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366165141] [2021-11-03 04:23:11,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366165141] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:11,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:11,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:23:11,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585955758] [2021-11-03 04:23:11,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:11,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:11,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:11,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:11,449 INFO L87 Difference]: Start difference. First operand 12461 states and 23423 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:12,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:12,507 INFO L93 Difference]: Finished difference Result 24896 states and 46809 transitions. [2021-11-03 04:23:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:23:12,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-03 04:23:12,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:12,540 INFO L225 Difference]: With dead ends: 24896 [2021-11-03 04:23:12,541 INFO L226 Difference]: Without dead ends: 12461 [2021-11-03 04:23:12,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-03 04:23:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12461 states. [2021-11-03 04:23:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12461 to 12461. [2021-11-03 04:23:12,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12461 states, 12451 states have (on average 1.8804112119508474) internal successors, (23413), 12460 states have internal predecessors, (23413), 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 04:23:12,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 23413 transitions. [2021-11-03 04:23:12,955 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 23413 transitions. Word has length 34 [2021-11-03 04:23:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:12,956 INFO L470 AbstractCegarLoop]: Abstraction has 12461 states and 23413 transitions. [2021-11-03 04:23:12,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:12,957 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 23413 transitions. [2021-11-03 04:23:12,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 04:23:12,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:12,961 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] [2021-11-03 04:23:12,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:13,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:13,176 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:13,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash 380427730, now seen corresponding path program 1 times [2021-11-03 04:23:13,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:13,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410513673] [2021-11-03 04:23:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:13,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:13,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:13,180 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:13,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:23:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:13,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:13,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:13,653 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 04:23:13,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:13,821 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 04:23:13,821 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:13,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410513673] [2021-11-03 04:23:13,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410513673] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:13,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:13,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:23:13,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179995899] [2021-11-03 04:23:13,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:13,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:13,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:13,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:13,823 INFO L87 Difference]: Start difference. First operand 12461 states and 23413 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 04:23:20,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:20,301 INFO L93 Difference]: Finished difference Result 55412 states and 103725 transitions. [2021-11-03 04:23:20,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-03 04:23:20,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 38 [2021-11-03 04:23:20,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:20,398 INFO L225 Difference]: With dead ends: 55412 [2021-11-03 04:23:20,398 INFO L226 Difference]: Without dead ends: 43021 [2021-11-03 04:23:20,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2021-11-03 04:23:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43021 states. [2021-11-03 04:23:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43021 to 22116. [2021-11-03 04:23:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22116 states, 22106 states have (on average 1.8797159142314304) internal successors, (41553), 22115 states have internal predecessors, (41553), 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 04:23:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22116 states to 22116 states and 41553 transitions. [2021-11-03 04:23:21,565 INFO L78 Accepts]: Start accepts. Automaton has 22116 states and 41553 transitions. Word has length 38 [2021-11-03 04:23:21,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:21,566 INFO L470 AbstractCegarLoop]: Abstraction has 22116 states and 41553 transitions. [2021-11-03 04:23:21,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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 04:23:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 22116 states and 41553 transitions. [2021-11-03 04:23:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-03 04:23:21,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:21,568 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] [2021-11-03 04:23:21,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:21,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:21,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:21,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:21,783 INFO L85 PathProgramCache]: Analyzing trace with hash -312286227, now seen corresponding path program 1 times [2021-11-03 04:23:21,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:21,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877402243] [2021-11-03 04:23:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:21,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:21,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:21,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:21,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:23:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:22,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:22,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:22,307 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 04:23:22,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:22,426 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 04:23:22,427 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:22,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877402243] [2021-11-03 04:23:22,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877402243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:22,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:22,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:23:22,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559079293] [2021-11-03 04:23:22,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:23:22,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:22,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:23:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:23:22,429 INFO L87 Difference]: Start difference. First operand 22116 states and 41553 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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 04:23:29,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:29,884 INFO L93 Difference]: Finished difference Result 185685 states and 349118 transitions. [2021-11-03 04:23:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:23:29,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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 38 [2021-11-03 04:23:29,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:30,606 INFO L225 Difference]: With dead ends: 185685 [2021-11-03 04:23:30,607 INFO L226 Difference]: Without dead ends: 163639 [2021-11-03 04:23:30,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 71 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 04:23:30,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163639 states. [2021-11-03 04:23:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163639 to 41555. [2021-11-03 04:23:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41555 states, 41545 states have (on average 1.8791912384161753) internal successors, (78071), 41554 states have internal predecessors, (78071), 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 04:23:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41555 states to 41555 states and 78071 transitions. [2021-11-03 04:23:32,989 INFO L78 Accepts]: Start accepts. Automaton has 41555 states and 78071 transitions. Word has length 38 [2021-11-03 04:23:32,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:32,989 INFO L470 AbstractCegarLoop]: Abstraction has 41555 states and 78071 transitions. [2021-11-03 04:23:32,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 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 04:23:32,990 INFO L276 IsEmpty]: Start isEmpty. Operand 41555 states and 78071 transitions. [2021-11-03 04:23:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 04:23:32,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:32,990 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 04:23:33,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:33,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:33,212 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:33,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash 364115817, now seen corresponding path program 1 times [2021-11-03 04:23:33,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:33,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484211900] [2021-11-03 04:23:33,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:33,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:33,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:33,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:33,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:23:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:33,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:33,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:33,683 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 04:23:33,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:33,764 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 04:23:33,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:33,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484211900] [2021-11-03 04:23:33,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484211900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:33,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:33,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:23:33,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489786609] [2021-11-03 04:23:33,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:23:33,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:33,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:23:33,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:23:33,767 INFO L87 Difference]: Start difference. First operand 41555 states and 78071 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 04:23:36,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:36,555 INFO L93 Difference]: Finished difference Result 123505 states and 232019 transitions. [2021-11-03 04:23:36,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:23:36,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 04:23:36,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:36,696 INFO L225 Difference]: With dead ends: 123505 [2021-11-03 04:23:36,696 INFO L226 Difference]: Without dead ends: 81982 [2021-11-03 04:23:36,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:23:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81982 states. [2021-11-03 04:23:38,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81982 to 41431. [2021-11-03 04:23:38,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41431 states, 41421 states have (on average 1.878829579198957) internal successors, (77823), 41430 states have internal predecessors, (77823), 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 04:23:38,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41431 states to 41431 states and 77823 transitions. [2021-11-03 04:23:38,421 INFO L78 Accepts]: Start accepts. Automaton has 41431 states and 77823 transitions. Word has length 39 [2021-11-03 04:23:38,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:38,421 INFO L470 AbstractCegarLoop]: Abstraction has 41431 states and 77823 transitions. [2021-11-03 04:23:38,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 04:23:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 41431 states and 77823 transitions. [2021-11-03 04:23:38,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-03 04:23:38,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:38,423 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 04:23:38,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 04:23:38,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:38,641 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1878207738, now seen corresponding path program 1 times [2021-11-03 04:23:38,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:38,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280429270] [2021-11-03 04:23:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:38,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:38,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:38,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:38,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:23:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:39,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:23:39,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:39,164 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 04:23:39,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:39,314 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 04:23:39,315 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:39,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280429270] [2021-11-03 04:23:39,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280429270] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:39,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:39,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:23:39,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057089442] [2021-11-03 04:23:39,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:23:39,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:23:39,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:23:39,318 INFO L87 Difference]: Start difference. First operand 41431 states and 77823 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:53,595 INFO L93 Difference]: Finished difference Result 157092 states and 294541 transitions. [2021-11-03 04:23:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:23:53,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-03 04:23:53,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:53,948 INFO L225 Difference]: With dead ends: 157092 [2021-11-03 04:23:53,948 INFO L226 Difference]: Without dead ends: 115695 [2021-11-03 04:23:53,994 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:23:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115695 states. [2021-11-03 04:23:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115695 to 80901. [2021-11-03 04:23:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80901 states, 80891 states have (on average 1.8627412196659703) internal successors, (150679), 80900 states have internal predecessors, (150679), 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 04:23:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80901 states to 80901 states and 150679 transitions. [2021-11-03 04:23:56,967 INFO L78 Accepts]: Start accepts. Automaton has 80901 states and 150679 transitions. Word has length 39 [2021-11-03 04:23:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:56,968 INFO L470 AbstractCegarLoop]: Abstraction has 80901 states and 150679 transitions. [2021-11-03 04:23:56,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:56,968 INFO L276 IsEmpty]: Start isEmpty. Operand 80901 states and 150679 transitions. [2021-11-03 04:23:56,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 04:23:56,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:56,969 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:56,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:57,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:23:57,183 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:23:57,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1866550395, now seen corresponding path program 1 times [2021-11-03 04:23:57,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:23:57,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665809040] [2021-11-03 04:23:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:57,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:23:57,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:23:57,185 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:23:57,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:23:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:57,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:23:57,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:57,675 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 04:23:57,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:57,788 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 04:23:57,789 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:23:57,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665809040] [2021-11-03 04:23:57,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665809040] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:57,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:57,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:23:57,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126952369] [2021-11-03 04:23:57,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:57,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:23:57,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:57,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:57,791 INFO L87 Difference]: Start difference. First operand 80901 states and 150679 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:05,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:05,163 INFO L93 Difference]: Finished difference Result 319443 states and 594979 transitions. [2021-11-03 04:24:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:24:05,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-03 04:24:05,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:05,775 INFO L225 Difference]: With dead ends: 319443 [2021-11-03 04:24:05,775 INFO L226 Difference]: Without dead ends: 238579 [2021-11-03 04:24:05,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:24:06,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238579 states. [2021-11-03 04:24:09,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238579 to 80787. [2021-11-03 04:24:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80787 states, 80777 states have (on average 1.8600467954987188) internal successors, (150249), 80786 states have internal predecessors, (150249), 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 04:24:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80787 states to 80787 states and 150249 transitions. [2021-11-03 04:24:09,935 INFO L78 Accepts]: Start accepts. Automaton has 80787 states and 150249 transitions. Word has length 42 [2021-11-03 04:24:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:09,935 INFO L470 AbstractCegarLoop]: Abstraction has 80787 states and 150249 transitions. [2021-11-03 04:24:09,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:24:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 80787 states and 150249 transitions. [2021-11-03 04:24:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-03 04:24:09,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:09,936 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] [2021-11-03 04:24:09,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 04:24:10,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:10,140 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:24:10,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:10,141 INFO L85 PathProgramCache]: Analyzing trace with hash 352474762, now seen corresponding path program 1 times [2021-11-03 04:24:10,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:10,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295669953] [2021-11-03 04:24:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:10,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:10,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:10,143 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:10,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:24:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:10,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:24:10,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:10,684 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 04:24:10,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:10,825 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 04:24:10,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:10,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295669953] [2021-11-03 04:24:10,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295669953] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:10,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:10,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:24:10,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337503273] [2021-11-03 04:24:10,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:24:10,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:10,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:24:10,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:24:10,827 INFO L87 Difference]: Start difference. First operand 80787 states and 150249 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 04:24:30,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:30,252 INFO L93 Difference]: Finished difference Result 678338 states and 1264164 transitions. [2021-11-03 04:24:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:24:30,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2021-11-03 04:24:30,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:31,431 INFO L225 Difference]: With dead ends: 678338 [2021-11-03 04:24:31,432 INFO L226 Difference]: Without dead ends: 597607 [2021-11-03 04:24:31,580 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 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 04:24:32,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597607 states. [2021-11-03 04:24:40,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597607 to 154721. [2021-11-03 04:24:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154721 states, 154711 states have (on average 1.8604430195655124) internal successors, (287831), 154720 states have internal predecessors, (287831), 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 04:24:40,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154721 states to 154721 states and 287831 transitions. [2021-11-03 04:24:40,756 INFO L78 Accepts]: Start accepts. Automaton has 154721 states and 287831 transitions. Word has length 43 [2021-11-03 04:24:40,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:24:40,756 INFO L470 AbstractCegarLoop]: Abstraction has 154721 states and 287831 transitions. [2021-11-03 04:24:40,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 04:24:40,756 INFO L276 IsEmpty]: Start isEmpty. Operand 154721 states and 287831 transitions. [2021-11-03 04:24:40,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-03 04:24:40,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:24:40,757 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] [2021-11-03 04:24:40,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 04:24:40,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:24:40,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:24:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:24:40,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1039817606, now seen corresponding path program 1 times [2021-11-03 04:24:40,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:24:40,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815433301] [2021-11-03 04:24:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:24:40,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:24:40,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:24:40,960 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:24:40,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:24:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:24:41,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:24:41,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:24:41,529 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 04:24:41,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:24:41,614 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 04:24:41,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:24:41,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815433301] [2021-11-03 04:24:41,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815433301] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:24:41,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:24:41,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:24:41,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105301505] [2021-11-03 04:24:41,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:24:41,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:24:41,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:24:41,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:24:41,617 INFO L87 Difference]: Start difference. First operand 154721 states and 287831 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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 04:24:56,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:24:56,445 INFO L93 Difference]: Finished difference Result 611578 states and 1138635 transitions. [2021-11-03 04:24:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:24:56,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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 48 [2021-11-03 04:24:56,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:24:57,342 INFO L225 Difference]: With dead ends: 611578 [2021-11-03 04:24:57,343 INFO L226 Difference]: Without dead ends: 456900 [2021-11-03 04:24:57,492 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 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 04:24:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456900 states. [2021-11-03 04:25:05,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456900 to 154555. [2021-11-03 04:25:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154555 states, 154545 states have (on average 1.8582548772202272) internal successors, (287184), 154554 states have internal predecessors, (287184), 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 04:25:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154555 states to 154555 states and 287184 transitions. [2021-11-03 04:25:06,005 INFO L78 Accepts]: Start accepts. Automaton has 154555 states and 287184 transitions. Word has length 48 [2021-11-03 04:25:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:25:06,005 INFO L470 AbstractCegarLoop]: Abstraction has 154555 states and 287184 transitions. [2021-11-03 04:25:06,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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 04:25:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 154555 states and 287184 transitions. [2021-11-03 04:25:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:25:06,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:25:06,006 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:25:06,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:25:06,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:25:06,211 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:25:06,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:25:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1826891069, now seen corresponding path program 1 times [2021-11-03 04:25:06,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:25:06,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818982728] [2021-11-03 04:25:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:25:06,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:25:06,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:25:06,214 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:25:06,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:25:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:25:06,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:25:06,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:25:06,759 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 04:25:06,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:25:06,880 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 04:25:06,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:25:06,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818982728] [2021-11-03 04:25:06,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818982728] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:25:06,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:25:06,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:25:06,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920518900] [2021-11-03 04:25:06,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:25:06,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:25:06,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:25:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:25:06,882 INFO L87 Difference]: Start difference. First operand 154555 states and 287184 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:25:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:25:48,378 INFO L93 Difference]: Finished difference Result 1317709 states and 2453893 transitions. [2021-11-03 04:25:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:25:48,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-03 04:25:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:25:50,963 INFO L225 Difference]: With dead ends: 1317709 [2021-11-03 04:25:50,964 INFO L226 Difference]: Without dead ends: 1163208 [2021-11-03 04:25:51,252 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 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 04:25:52,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163208 states. [2021-11-03 04:26:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163208 to 300151. [2021-11-03 04:26:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300151 states, 300141 states have (on average 1.8573670374923785) internal successors, (557472), 300150 states have internal predecessors, (557472), 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 04:26:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300151 states to 300151 states and 557472 transitions. [2021-11-03 04:26:11,296 INFO L78 Accepts]: Start accepts. Automaton has 300151 states and 557472 transitions. Word has length 49 [2021-11-03 04:26:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:26:11,297 INFO L470 AbstractCegarLoop]: Abstraction has 300151 states and 557472 transitions. [2021-11-03 04:26:11,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:26:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 300151 states and 557472 transitions. [2021-11-03 04:26:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:26:11,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:26:11,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:26:11,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 04:26:11,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:26:11,499 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:26:11,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:26:11,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1509125904, now seen corresponding path program 1 times [2021-11-03 04:26:11,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:26:11,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182497399] [2021-11-03 04:26:11,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:26:11,500 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:26:11,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:26:11,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:26:11,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:26:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:26:11,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:26:11,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:26:12,049 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 04:26:12,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:26:12,154 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 04:26:12,155 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:26:12,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182497399] [2021-11-03 04:26:12,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182497399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:26:12,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:26:12,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:26:12,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281591784] [2021-11-03 04:26:12,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:26:12,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:26:12,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:26:12,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:26:12,157 INFO L87 Difference]: Start difference. First operand 300151 states and 557472 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 04:26:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:26:49,558 INFO L93 Difference]: Finished difference Result 1186583 states and 2207076 transitions. [2021-11-03 04:26:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:26:49,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-03 04:26:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:26:52,679 INFO L225 Difference]: With dead ends: 1186583 [2021-11-03 04:26:52,679 INFO L226 Difference]: Without dead ends: 886482 [2021-11-03 04:26:53,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 106 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 04:26:54,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886482 states. [2021-11-03 04:27:11,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886482 to 299992. [2021-11-03 04:27:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299992 states, 299982 states have (on average 1.855811348680921) internal successors, (556710), 299991 states have internal predecessors, (556710), 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 04:27:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299992 states to 299992 states and 556710 transitions. [2021-11-03 04:27:13,438 INFO L78 Accepts]: Start accepts. Automaton has 299992 states and 556710 transitions. Word has length 55 [2021-11-03 04:27:13,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:27:13,438 INFO L470 AbstractCegarLoop]: Abstraction has 299992 states and 556710 transitions. [2021-11-03 04:27:13,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 04:27:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 299992 states and 556710 transitions. [2021-11-03 04:27:13,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:27:13,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:27:13,439 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:27:13,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:27:13,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:27:13,640 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:27:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:27:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash 766900615, now seen corresponding path program 1 times [2021-11-03 04:27:13,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:27:13,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391415634] [2021-11-03 04:27:13,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:27:13,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:27:13,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:27:13,643 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:27:13,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:27:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:27:14,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:27:14,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:27:14,314 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 04:27:14,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:27:14,494 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 04:27:14,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:27:14,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391415634] [2021-11-03 04:27:14,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391415634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:27:14,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:27:14,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:27:14,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42187968] [2021-11-03 04:27:14,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:27:14,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:27:14,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:27:14,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:27:14,496 INFO L87 Difference]: Start difference. First operand 299992 states and 556710 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:28:54,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:28:54,446 INFO L93 Difference]: Finished difference Result 2574395 states and 4789811 transitions. [2021-11-03 04:28:54,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:28:54,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-03 04:28:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:29:01,225 INFO L225 Difference]: With dead ends: 2574395 [2021-11-03 04:29:01,226 INFO L226 Difference]: Without dead ends: 2274456 [2021-11-03 04:29:01,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 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 04:29:06,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274456 states. [2021-11-03 04:29:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274456 to 586752. [2021-11-03 04:29:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586752 states, 586742 states have (on average 1.8543243878911004) internal successors, (1088010), 586751 states have internal predecessors, (1088010), 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 04:30:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586752 states to 586752 states and 1088010 transitions. [2021-11-03 04:30:01,123 INFO L78 Accepts]: Start accepts. Automaton has 586752 states and 1088010 transitions. Word has length 56 [2021-11-03 04:30:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:30:01,123 INFO L470 AbstractCegarLoop]: Abstraction has 586752 states and 1088010 transitions. [2021-11-03 04:30:01,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:30:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 586752 states and 1088010 transitions. [2021-11-03 04:30:01,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 04:30:01,125 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:30:01,139 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] [2021-11-03 04:30:01,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-03 04:30:01,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:30:01,340 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:30:01,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:30:01,341 INFO L85 PathProgramCache]: Analyzing trace with hash 529821790, now seen corresponding path program 1 times [2021-11-03 04:30:01,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:30:01,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931887581] [2021-11-03 04:30:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:30:01,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:30:01,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:30:01,343 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:30:01,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 04:30:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:30:02,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:30:02,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:30:02,653 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 04:30:02,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:30:02,941 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 04:30:02,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:30:02,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931887581] [2021-11-03 04:30:02,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931887581] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:30:02,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:30:02,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 04:30:02,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452459528] [2021-11-03 04:30:02,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:30:02,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:30:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:30:02,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:30:02,944 INFO L87 Difference]: Start difference. First operand 586752 states and 1088010 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 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 04:30:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:30:58,322 INFO L93 Difference]: Finished difference Result 1451615 states and 2696485 transitions. [2021-11-03 04:30:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:30:58,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 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 57 [2021-11-03 04:30:58,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:31:00,707 INFO L225 Difference]: With dead ends: 1451615 [2021-11-03 04:31:00,707 INFO L226 Difference]: Without dead ends: 1045690 [2021-11-03 04:31:01,066 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 110 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 04:31:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045690 states. [2021-11-03 04:31:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045690 to 785276. [2021-11-03 04:32:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785276 states, 785266 states have (on average 1.847228837107426) internal successors, (1450566), 785275 states have internal predecessors, (1450566), 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 04:32:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785276 states to 785276 states and 1450566 transitions. [2021-11-03 04:32:04,907 INFO L78 Accepts]: Start accepts. Automaton has 785276 states and 1450566 transitions. Word has length 57 [2021-11-03 04:32:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:32:04,907 INFO L470 AbstractCegarLoop]: Abstraction has 785276 states and 1450566 transitions. [2021-11-03 04:32:04,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 3 states have internal predecessors, (109), 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 04:32:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 785276 states and 1450566 transitions. [2021-11-03 04:32:04,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-03 04:32:04,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:32:04,911 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] [2021-11-03 04:32:04,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-03 04:32:05,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:32:05,120 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:32:05,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:32:05,121 INFO L85 PathProgramCache]: Analyzing trace with hash 739661685, now seen corresponding path program 1 times [2021-11-03 04:32:05,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:32:05,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376310028] [2021-11-03 04:32:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:32:05,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:32:05,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:32:05,123 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:32:05,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 04:32:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:32:05,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:32:05,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:32:06,067 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 04:32:06,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:32:06,346 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 04:32:06,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:32:06,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376310028] [2021-11-03 04:32:06,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376310028] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:32:06,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:32:06,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:32:06,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136787800] [2021-11-03 04:32:06,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:32:06,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:32:06,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:32:06,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:32:06,350 INFO L87 Difference]: Start difference. First operand 785276 states and 1450566 transitions. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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 04:33:02,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:33:02,066 INFO L93 Difference]: Finished difference Result 1683157 states and 3102765 transitions. [2021-11-03 04:33:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:33:02,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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 76 [2021-11-03 04:33:02,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:33:04,754 INFO L225 Difference]: With dead ends: 1683157 [2021-11-03 04:33:04,755 INFO L226 Difference]: Without dead ends: 905793 [2021-11-03 04:33:05,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:33:06,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905793 states. [2021-11-03 04:33:50,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905793 to 656021. [2021-11-03 04:33:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656021 states, 656011 states have (on average 1.8461428238246005) internal successors, (1211090), 656020 states have internal predecessors, (1211090), 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 04:33:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656021 states to 656021 states and 1211090 transitions. [2021-11-03 04:33:54,537 INFO L78 Accepts]: Start accepts. Automaton has 656021 states and 1211090 transitions. Word has length 76 [2021-11-03 04:33:54,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:33:54,537 INFO L470 AbstractCegarLoop]: Abstraction has 656021 states and 1211090 transitions. [2021-11-03 04:33:54,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 7 states have internal predecessors, (127), 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 04:33:54,538 INFO L276 IsEmpty]: Start isEmpty. Operand 656021 states and 1211090 transitions. [2021-11-03 04:33:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:33:54,540 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:33:54,541 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 04:33:54,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-03 04:33:54,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:33:54,745 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:33:54,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:33:54,745 INFO L85 PathProgramCache]: Analyzing trace with hash -829943263, now seen corresponding path program 1 times [2021-11-03 04:33:54,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:33:54,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779988159] [2021-11-03 04:33:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:33:54,746 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:33:54,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:33:54,747 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:33:54,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-03 04:33:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:33:55,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:33:55,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:33:55,745 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 04:33:55,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:33:56,004 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 04:33:56,005 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:33:56,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779988159] [2021-11-03 04:33:56,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779988159] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:33:56,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:33:56,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:33:56,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464274332] [2021-11-03 04:33:56,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:33:56,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:33:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:33:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:33:56,007 INFO L87 Difference]: Start difference. First operand 656021 states and 1211090 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 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 04:35:45,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:35:45,036 INFO L93 Difference]: Finished difference Result 2500296 states and 4619527 transitions. [2021-11-03 04:35:45,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:35:45,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 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 04:35:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:35:50,740 INFO L225 Difference]: With dead ends: 2500296 [2021-11-03 04:35:50,740 INFO L226 Difference]: Without dead ends: 1844337 [2021-11-03 04:35:51,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 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 04:35:53,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844337 states. [2021-11-03 04:36:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844337 to 656021. [2021-11-03 04:36:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656021 states, 656011 states have (on average 1.8227544964947233) internal successors, (1195747), 656020 states have internal predecessors, (1195747), 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 04:37:02,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656021 states to 656021 states and 1195747 transitions. [2021-11-03 04:37:02,194 INFO L78 Accepts]: Start accepts. Automaton has 656021 states and 1195747 transitions. Word has length 77 [2021-11-03 04:37:02,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:37:02,195 INFO L470 AbstractCegarLoop]: Abstraction has 656021 states and 1195747 transitions. [2021-11-03 04:37:02,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 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 04:37:02,195 INFO L276 IsEmpty]: Start isEmpty. Operand 656021 states and 1195747 transitions. [2021-11-03 04:37:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 04:37:02,198 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:37:02,198 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 04:37:02,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-03 04:37:02,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:37:02,416 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-03 04:37:02,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:37:02,416 INFO L85 PathProgramCache]: Analyzing trace with hash -624605131, now seen corresponding path program 1 times [2021-11-03 04:37:02,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:37:02,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834184666] [2021-11-03 04:37:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:37:02,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:37:02,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:37:02,421 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:37:02,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2165229-7417-4239-b56b-7722efda4af2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-03 04:37:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:37:03,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:37:03,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:37:04,044 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 04:37:04,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:37:04,506 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 04:37:04,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:37:04,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834184666] [2021-11-03 04:37:04,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834184666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:37:04,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:37:04,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:37:04,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897750369] [2021-11-03 04:37:04,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 04:37:04,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:37:04,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 04:37:04,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:37:04,509 INFO L87 Difference]: Start difference. First operand 656021 states and 1195747 transitions. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 8 states have internal predecessors, (142), 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)