./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product19.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_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/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_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/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_5504efee-8b06-408c-ac5a-5150ed6196bd/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 5643166a994eeb2bd259cf18f0a4b43a93b8e6b433c116ad537f0a1a02a75ec3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:12:54,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:12:54,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:12:54,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:12:54,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:12:54,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:12:54,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:12:54,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:12:54,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:12:54,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:12:54,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:12:54,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:12:54,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:12:54,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:12:54,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:12:54,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:12:54,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:12:54,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:12:54,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:12:54,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:12:54,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:12:54,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:12:54,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:12:54,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:12:54,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:12:54,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:12:54,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:12:54,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:12:54,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:12:54,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:12:54,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:12:54,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:12:54,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:12:54,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:12:54,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:12:54,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:12:54,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:12:54,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:12:54,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:12:54,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:12:54,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:12:54,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:12:54,829 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:12:54,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:12:54,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:12:54,830 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:12:54,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:12:54,831 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:12:54,831 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:12:54,831 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:12:54,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:12:54,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:12:54,832 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:12:54,832 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:12:54,832 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:12:54,832 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:12:54,832 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:12:54,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:12:54,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:12:54,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:12:54,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:12:54,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:12:54,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:12:54,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:12:54,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:12:54,835 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:12:54,835 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:12:54,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:12:54,835 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:12:54,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:12:54,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:12:54,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:12:54,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:12:54,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:12:54,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:12:54,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:12:54,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:12:54,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:12:54,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:12:54,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:12:54,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:12:54,838 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_5504efee-8b06-408c-ac5a-5150ed6196bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5643166a994eeb2bd259cf18f0a4b43a93b8e6b433c116ad537f0a1a02a75ec3 [2021-11-03 04:12:55,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:12:55,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:12:55,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:12:55,106 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:12:55,106 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:12:55,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c [2021-11-03 04:12:55,192 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/data/c6f1d5752/c82b89932e61483ca8ccf27fd5bbc67f/FLAG16fb258a8 [2021-11-03 04:12:55,852 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:12:55,854 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c [2021-11-03 04:12:55,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/data/c6f1d5752/c82b89932e61483ca8ccf27fd5bbc67f/FLAG16fb258a8 [2021-11-03 04:12:56,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/data/c6f1d5752/c82b89932e61483ca8ccf27fd5bbc67f [2021-11-03 04:12:56,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:12:56,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:12:56,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:12:56,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:12:56,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:12:56,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:12:56" (1/1) ... [2021-11-03 04:12:56,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605c203e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:56, skipping insertion in model container [2021-11-03 04:12:56,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:12:56" (1/1) ... [2021-11-03 04:12:56,046 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:12:56,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:12:56,641 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_5504efee-8b06-408c-ac5a-5150ed6196bd/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c[49225,49238] [2021-11-03 04:12:56,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:12:56,731 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 04:12:56,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2584113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:12:56, skipping insertion in model container [2021-11-03 04:12:56,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:12:56,732 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 04:12:56,734 INFO L168 Benchmark]: Toolchain (without parser) took 706.73 ms. Allocated memory is still 146.8 MB. Free memory was 105.0 MB in the beginning and 106.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:12:56,735 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 146.8 MB. Free memory was 117.9 MB in the beginning and 117.9 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:12:56,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.19 ms. Allocated memory is still 146.8 MB. Free memory was 105.0 MB in the beginning and 106.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-03 04:12:56,738 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 146.8 MB. Free memory was 117.9 MB in the beginning and 117.9 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 701.19 ms. Allocated memory is still 146.8 MB. Free memory was 105.0 MB in the beginning and 106.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1769]: 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_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/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_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/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_5504efee-8b06-408c-ac5a-5150ed6196bd/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 5643166a994eeb2bd259cf18f0a4b43a93b8e6b433c116ad537f0a1a02a75ec3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:12:58,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:12:58,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:12:58,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:12:58,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:12:58,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:12:58,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:12:58,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:12:58,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:12:58,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:12:58,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:12:58,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:12:58,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:12:58,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:12:58,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:12:58,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:12:58,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:12:58,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:12:58,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:12:58,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:12:58,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:12:58,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:12:58,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:12:58,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:12:58,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:12:58,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:12:58,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:12:58,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:12:58,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:12:58,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:12:58,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:12:58,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:12:58,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:12:58,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:12:58,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:12:58,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:12:58,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:12:58,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:12:58,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:12:58,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:12:58,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:12:58,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:12:59,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:12:59,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:12:59,016 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:12:59,017 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:12:59,017 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:12:59,017 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:12:59,017 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:12:59,018 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:12:59,018 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:12:59,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:12:59,020 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:12:59,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:12:59,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:12:59,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:12:59,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:12:59,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:12:59,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:12:59,022 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:12:59,022 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:12:59,022 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:12:59,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:12:59,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:12:59,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:12:59,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:12:59,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:12:59,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:12:59,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:12:59,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:12:59,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:12:59,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:12:59,025 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:12:59,025 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:12:59,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:12:59,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:12:59,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:12:59,026 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_5504efee-8b06-408c-ac5a-5150ed6196bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5643166a994eeb2bd259cf18f0a4b43a93b8e6b433c116ad537f0a1a02a75ec3 [2021-11-03 04:12:59,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:12:59,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:12:59,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:12:59,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:12:59,427 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:12:59,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c [2021-11-03 04:12:59,496 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/data/20992539d/fb504d9e1c524680add9b8f891e5ea69/FLAG21e05b4f3 [2021-11-03 04:13:00,131 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:13:00,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c [2021-11-03 04:13:00,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/data/20992539d/fb504d9e1c524680add9b8f891e5ea69/FLAG21e05b4f3 [2021-11-03 04:13:00,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/data/20992539d/fb504d9e1c524680add9b8f891e5ea69 [2021-11-03 04:13:00,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:13:00,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:13:00,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:00,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:13:00,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:13:00,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:00" (1/1) ... [2021-11-03 04:13:00,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f77eb64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:00, skipping insertion in model container [2021-11-03 04:13:00,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:13:00" (1/1) ... [2021-11-03 04:13:00,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:13:00,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:00,955 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_5504efee-8b06-408c-ac5a-5150ed6196bd/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c[49225,49238] [2021-11-03 04:13:01,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:01,048 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 04:13:01,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:13:01,179 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_5504efee-8b06-408c-ac5a-5150ed6196bd/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c[49225,49238] [2021-11-03 04:13:01,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:01,211 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:13:01,295 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_5504efee-8b06-408c-ac5a-5150ed6196bd/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c[49225,49238] [2021-11-03 04:13:01,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:13:01,362 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:13:01,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01 WrapperNode [2021-11-03 04:13:01,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:13:01,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:01,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:13:01,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:13:01,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (1/1) ... [2021-11-03 04:13:01,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (1/1) ... [2021-11-03 04:13:01,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:13:01,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:13:01,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:13:01,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:13:01,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (1/1) ... [2021-11-03 04:13:01,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (1/1) ... [2021-11-03 04:13:01,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (1/1) ... [2021-11-03 04:13:01,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (1/1) ... [2021-11-03 04:13:02,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (1/1) ... [2021-11-03 04:13:02,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (1/1) ... [2021-11-03 04:13:02,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (1/1) ... [2021-11-03 04:13:02,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:13:02,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:13:02,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:13:02,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:13:02,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (1/1) ... [2021-11-03 04:13:02,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:13:02,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:13:02,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:13:02,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:13:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:13:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:13:02,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:13:02,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:13:17,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:13:17,215 INFO L299 CfgBuilder]: Removed 1383 assume(true) statements. [2021-11-03 04:13:17,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:17 BoogieIcfgContainer [2021-11-03 04:13:17,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:13:17,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:13:17,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:13:17,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:13:17,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:13:00" (1/3) ... [2021-11-03 04:13:17,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337401a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:17, skipping insertion in model container [2021-11-03 04:13:17,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:13:01" (2/3) ... [2021-11-03 04:13:17,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337401a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:13:17, skipping insertion in model container [2021-11-03 04:13:17,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:13:17" (3/3) ... [2021-11-03 04:13:17,232 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product19.cil.c [2021-11-03 04:13:17,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:13:17,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-03 04:13:17,330 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:13:17,336 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 04:13:17,336 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-03 04:13:17,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 5907 states, 5901 states have (on average 1.8867988476529403) internal successors, (11134), 5906 states have internal predecessors, (11134), 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 04:13:17,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 04:13:17,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:17,478 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] [2021-11-03 04:13:17,479 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:13:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1814038652, now seen corresponding path program 1 times [2021-11-03 04:13:17,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:17,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864958913] [2021-11-03 04:13:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:17,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:17,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:17,507 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:17,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:13:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:17,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:13:17,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:18,077 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 04:13:18,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:18,224 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 04:13:18,225 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:18,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864958913] [2021-11-03 04:13:18,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864958913] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:18,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:18,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:13:18,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343741443] [2021-11-03 04:13:18,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:13:18,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:18,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:13:18,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:18,276 INFO L87 Difference]: Start difference. First operand has 5907 states, 5901 states have (on average 1.8867988476529403) internal successors, (11134), 5906 states have internal predecessors, (11134), 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 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 04:13:18,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:18,957 INFO L93 Difference]: Finished difference Result 16594 states and 31275 transitions. [2021-11-03 04:13:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:13:18,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 44 [2021-11-03 04:13:18,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:19,054 INFO L225 Difference]: With dead ends: 16594 [2021-11-03 04:13:19,055 INFO L226 Difference]: Without dead ends: 10687 [2021-11-03 04:13:19,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 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 04:13:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10687 states. [2021-11-03 04:13:19,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10687 to 5903. [2021-11-03 04:13:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5903 states, 5898 states have (on average 1.8843675822312649) internal successors, (11114), 5902 states have internal predecessors, (11114), 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 04:13:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 11114 transitions. [2021-11-03 04:13:19,409 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 11114 transitions. Word has length 44 [2021-11-03 04:13:19,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:19,410 INFO L470 AbstractCegarLoop]: Abstraction has 5903 states and 11114 transitions. [2021-11-03 04:13:19,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 04:13:19,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 11114 transitions. [2021-11-03 04:13:19,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-03 04:13:19,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:19,420 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 04:13:19,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:19,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:19,638 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:13:19,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1234164848, now seen corresponding path program 1 times [2021-11-03 04:13:19,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:19,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954561150] [2021-11-03 04:13:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:19,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:19,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:19,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:19,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:13:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:20,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:13:20,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:20,240 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 04:13:20,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:20,384 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 04:13:20,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:20,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954561150] [2021-11-03 04:13:20,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954561150] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:20,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:20,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:13:20,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506167154] [2021-11-03 04:13:20,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:13:20,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:20,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:13:20,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:13:20,388 INFO L87 Difference]: Start difference. First operand 5903 states and 11114 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 04:13:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:21,643 INFO L93 Difference]: Finished difference Result 23577 states and 44381 transitions. [2021-11-03 04:13:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:13:21,644 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 04:13:21,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:21,735 INFO L225 Difference]: With dead ends: 23577 [2021-11-03 04:13:21,736 INFO L226 Difference]: Without dead ends: 17695 [2021-11-03 04:13:21,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:13:21,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17695 states. [2021-11-03 04:13:22,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17695 to 5881. [2021-11-03 04:13:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5881 states, 5876 states have (on average 1.8827433628318584) internal successors, (11063), 5880 states have internal predecessors, (11063), 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 04:13:22,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 11063 transitions. [2021-11-03 04:13:22,067 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 11063 transitions. Word has length 49 [2021-11-03 04:13:22,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:22,068 INFO L470 AbstractCegarLoop]: Abstraction has 5881 states and 11063 transitions. [2021-11-03 04:13:22,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 04:13:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 11063 transitions. [2021-11-03 04:13:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 04:13:22,075 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:22,081 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] [2021-11-03 04:13:22,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:22,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:22,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:13:22,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:22,298 INFO L85 PathProgramCache]: Analyzing trace with hash -396578672, now seen corresponding path program 1 times [2021-11-03 04:13:22,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:22,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766018518] [2021-11-03 04:13:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:22,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:22,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:22,301 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:22,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:13:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:22,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:13:22,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:22,839 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 04:13:22,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:22,996 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 04:13:22,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:22,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766018518] [2021-11-03 04:13:22,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766018518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:22,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:22,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 04:13:22,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427434348] [2021-11-03 04:13:22,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:13:22,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:13:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:22,999 INFO L87 Difference]: Start difference. First operand 5881 states and 11063 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 04:13:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:23,591 INFO L93 Difference]: Finished difference Result 16453 states and 30963 transitions. [2021-11-03 04:13:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:13:23,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 50 [2021-11-03 04:13:23,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:23,618 INFO L225 Difference]: With dead ends: 16453 [2021-11-03 04:13:23,618 INFO L226 Difference]: Without dead ends: 10593 [2021-11-03 04:13:23,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 96 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 04:13:23,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10593 states. [2021-11-03 04:13:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10593 to 5881. [2021-11-03 04:13:23,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5881 states, 5876 states have (on average 1.881722260040844) internal successors, (11057), 5880 states have internal predecessors, (11057), 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 04:13:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 11057 transitions. [2021-11-03 04:13:23,859 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 11057 transitions. Word has length 50 [2021-11-03 04:13:23,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:23,859 INFO L470 AbstractCegarLoop]: Abstraction has 5881 states and 11057 transitions. [2021-11-03 04:13:23,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 04:13:23,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 11057 transitions. [2021-11-03 04:13:23,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-03 04:13:23,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:23,862 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 04:13:23,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:24,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:24,083 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:13:24,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1199075869, now seen corresponding path program 1 times [2021-11-03 04:13:24,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:24,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283253655] [2021-11-03 04:13:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:24,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:24,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:24,087 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:24,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:13:24,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:24,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:13:24,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:24,658 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 04:13:24,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:24,851 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 04:13:24,851 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:24,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283253655] [2021-11-03 04:13:24,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283253655] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:24,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:24,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 04:13:24,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470433492] [2021-11-03 04:13:24,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:13:24,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:24,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:13:24,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:13:24,854 INFO L87 Difference]: Start difference. First operand 5881 states and 11057 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 04:13:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:26,899 INFO L93 Difference]: Finished difference Result 32940 states and 61976 transitions. [2021-11-03 04:13:26,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:13:26,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 04:13:26,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:26,982 INFO L225 Difference]: With dead ends: 32940 [2021-11-03 04:13:26,982 INFO L226 Difference]: Without dead ends: 27083 [2021-11-03 04:13:26,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:13:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27083 states. [2021-11-03 04:13:27,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27083 to 5883. [2021-11-03 04:13:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5883 states, 5878 states have (on average 1.8805716230010208) internal successors, (11054), 5882 states have internal predecessors, (11054), 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 04:13:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5883 states to 5883 states and 11054 transitions. [2021-11-03 04:13:27,328 INFO L78 Accepts]: Start accepts. Automaton has 5883 states and 11054 transitions. Word has length 55 [2021-11-03 04:13:27,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:27,330 INFO L470 AbstractCegarLoop]: Abstraction has 5883 states and 11054 transitions. [2021-11-03 04:13:27,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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 04:13:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5883 states and 11054 transitions. [2021-11-03 04:13:27,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-03 04:13:27,333 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:27,333 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 04:13:27,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:27,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:27,551 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:13:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:27,551 INFO L85 PathProgramCache]: Analyzing trace with hash 136095439, now seen corresponding path program 1 times [2021-11-03 04:13:27,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:27,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671212308] [2021-11-03 04:13:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:27,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:27,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:27,556 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:27,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:13:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:27,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:13:27,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:28,139 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 04:13:28,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:28,306 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 04:13:28,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:28,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671212308] [2021-11-03 04:13:28,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671212308] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:28,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:28,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:13:28,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618327581] [2021-11-03 04:13:28,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:13:28,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:28,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:13:28,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:13:28,313 INFO L87 Difference]: Start difference. First operand 5883 states and 11054 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 04:13:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:31,624 INFO L93 Difference]: Finished difference Result 21357 states and 40284 transitions. [2021-11-03 04:13:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:13:31,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 04:13:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:31,663 INFO L225 Difference]: With dead ends: 21357 [2021-11-03 04:13:31,663 INFO L226 Difference]: Without dead ends: 15504 [2021-11-03 04:13:31,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 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 04:13:31,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15504 states. [2021-11-03 04:13:31,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15504 to 5883. [2021-11-03 04:13:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5883 states, 5878 states have (on average 1.834977883633889) internal successors, (10786), 5882 states have internal predecessors, (10786), 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 04:13:31,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5883 states to 5883 states and 10786 transitions. [2021-11-03 04:13:31,949 INFO L78 Accepts]: Start accepts. Automaton has 5883 states and 10786 transitions. Word has length 56 [2021-11-03 04:13:31,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:31,950 INFO L470 AbstractCegarLoop]: Abstraction has 5883 states and 10786 transitions. [2021-11-03 04:13:31,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 5 states have internal predecessors, (82), 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 04:13:31,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5883 states and 10786 transitions. [2021-11-03 04:13:31,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-03 04:13:31,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:31,954 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:31,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:32,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:32,169 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:13:32,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:32,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1211445735, now seen corresponding path program 1 times [2021-11-03 04:13:32,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:32,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358867370] [2021-11-03 04:13:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:32,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:32,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:32,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:32,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:13:32,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:32,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:13:32,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:13:32,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:32,989 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 04:13:32,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:32,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358867370] [2021-11-03 04:13:32,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358867370] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:32,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:32,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:13:32,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445279514] [2021-11-03 04:13:32,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:13:32,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:32,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:13:32,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:13:32,992 INFO L87 Difference]: Start difference. First operand 5883 states and 10786 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:35,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:35,900 INFO L93 Difference]: Finished difference Result 29699 states and 55293 transitions. [2021-11-03 04:13:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 04:13:35,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-03 04:13:35,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:36,002 INFO L225 Difference]: With dead ends: 29699 [2021-11-03 04:13:36,003 INFO L226 Difference]: Without dead ends: 23864 [2021-11-03 04:13:36,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:13:36,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23864 states. [2021-11-03 04:13:36,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23864 to 8144. [2021-11-03 04:13:36,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8144 states, 8139 states have (on average 1.8353606094114756) internal successors, (14938), 8143 states have internal predecessors, (14938), 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 04:13:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8144 states to 8144 states and 14938 transitions. [2021-11-03 04:13:36,433 INFO L78 Accepts]: Start accepts. Automaton has 8144 states and 14938 transitions. Word has length 68 [2021-11-03 04:13:36,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:36,434 INFO L470 AbstractCegarLoop]: Abstraction has 8144 states and 14938 transitions. [2021-11-03 04:13:36,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand 8144 states and 14938 transitions. [2021-11-03 04:13:36,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 04:13:36,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:36,437 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:36,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 04:13:36,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:36,651 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:13:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash -481724487, now seen corresponding path program 1 times [2021-11-03 04:13:36,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:36,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747609070] [2021-11-03 04:13:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:36,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:36,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:36,654 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:36,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:13:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:37,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:13:37,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:37,310 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 04:13:37,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:37,486 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 04:13:37,486 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:37,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747609070] [2021-11-03 04:13:37,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747609070] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:37,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:37,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:13:37,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852150430] [2021-11-03 04:13:37,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:13:37,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:37,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:13:37,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:13:37,488 INFO L87 Difference]: Start difference. First operand 8144 states and 14938 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:40,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:40,850 INFO L93 Difference]: Finished difference Result 38948 states and 71939 transitions. [2021-11-03 04:13:40,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:13:40,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-03 04:13:40,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:40,903 INFO L225 Difference]: With dead ends: 38948 [2021-11-03 04:13:40,903 INFO L226 Difference]: Without dead ends: 30851 [2021-11-03 04:13:40,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 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 04:13:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30851 states. [2021-11-03 04:13:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30851 to 10478. [2021-11-03 04:13:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10478 states, 10473 states have (on average 1.833763009643846) internal successors, (19205), 10477 states have internal predecessors, (19205), 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 04:13:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10478 states to 10478 states and 19205 transitions. [2021-11-03 04:13:41,371 INFO L78 Accepts]: Start accepts. Automaton has 10478 states and 19205 transitions. Word has length 70 [2021-11-03 04:13:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:41,371 INFO L470 AbstractCegarLoop]: Abstraction has 10478 states and 19205 transitions. [2021-11-03 04:13:41,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 10478 states and 19205 transitions. [2021-11-03 04:13:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-03 04:13:41,374 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:41,375 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:41,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 04:13:41,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:41,589 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:13:41,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash -821589140, now seen corresponding path program 1 times [2021-11-03 04:13:41,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:41,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380374102] [2021-11-03 04:13:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:41,590 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:41,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:41,591 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:41,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:13:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:42,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 04:13:42,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:42,157 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 04:13:42,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:42,372 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 04:13:42,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:42,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380374102] [2021-11-03 04:13:42,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380374102] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:42,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:42,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:13:42,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75928944] [2021-11-03 04:13:42,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:13:42,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:13:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:13:42,374 INFO L87 Difference]: Start difference. First operand 10478 states and 19205 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:46,252 INFO L93 Difference]: Finished difference Result 39049 states and 72332 transitions. [2021-11-03 04:13:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 04:13:46,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-03 04:13:46,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:46,296 INFO L225 Difference]: With dead ends: 39049 [2021-11-03 04:13:46,296 INFO L226 Difference]: Without dead ends: 28605 [2021-11-03 04:13:46,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:13:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28605 states. [2021-11-03 04:13:47,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28605 to 18253. [2021-11-03 04:13:47,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18253 states, 18248 states have (on average 1.8208570802279702) internal successors, (33227), 18252 states have internal predecessors, (33227), 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 04:13:47,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18253 states to 18253 states and 33227 transitions. [2021-11-03 04:13:47,290 INFO L78 Accepts]: Start accepts. Automaton has 18253 states and 33227 transitions. Word has length 71 [2021-11-03 04:13:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:47,290 INFO L470 AbstractCegarLoop]: Abstraction has 18253 states and 33227 transitions. [2021-11-03 04:13:47,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:47,291 INFO L276 IsEmpty]: Start isEmpty. Operand 18253 states and 33227 transitions. [2021-11-03 04:13:47,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:13:47,293 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:47,293 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:47,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-03 04:13:47,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:47,509 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:13:47,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:47,509 INFO L85 PathProgramCache]: Analyzing trace with hash -852217116, now seen corresponding path program 1 times [2021-11-03 04:13:47,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:47,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943368803] [2021-11-03 04:13:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:47,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:47,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:47,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:47,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 04:13:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:48,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:13:48,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:48,203 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 04:13:48,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:48,411 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 04:13:48,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:48,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943368803] [2021-11-03 04:13:48,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943368803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:48,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:48,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:13:48,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183291556] [2021-11-03 04:13:48,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:13:48,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:13:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:13:48,413 INFO L87 Difference]: Start difference. First operand 18253 states and 33227 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:52,134 INFO L93 Difference]: Finished difference Result 148106 states and 270181 transitions. [2021-11-03 04:13:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:13:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 04:13:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:52,365 INFO L225 Difference]: With dead ends: 148106 [2021-11-03 04:13:52,365 INFO L226 Difference]: Without dead ends: 129896 [2021-11-03 04:13:52,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:13:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129896 states. [2021-11-03 04:13:54,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129896 to 35413. [2021-11-03 04:13:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35413 states, 35408 states have (on average 1.8218481699051061) internal successors, (64508), 35412 states have internal predecessors, (64508), 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 04:13:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35413 states to 35413 states and 64508 transitions. [2021-11-03 04:13:54,536 INFO L78 Accepts]: Start accepts. Automaton has 35413 states and 64508 transitions. Word has length 73 [2021-11-03 04:13:54,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:13:54,536 INFO L470 AbstractCegarLoop]: Abstraction has 35413 states and 64508 transitions. [2021-11-03 04:13:54,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 35413 states and 64508 transitions. [2021-11-03 04:13:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-03 04:13:54,539 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:13:54,539 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:13:54,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-03 04:13:54,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:13:54,754 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:13:54,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:13:54,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1696222618, now seen corresponding path program 1 times [2021-11-03 04:13:54,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:13:54,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460436801] [2021-11-03 04:13:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:13:54,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:13:54,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:13:54,757 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:13:54,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 04:13:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:13:55,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:13:55,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:13:55,615 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 04:13:55,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:13:55,830 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 04:13:55,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:13:55,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460436801] [2021-11-03 04:13:55,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460436801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:13:55,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:13:55,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 04:13:55,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271071270] [2021-11-03 04:13:55,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:13:55,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:13:55,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:13:55,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:13:55,832 INFO L87 Difference]: Start difference. First operand 35413 states and 64508 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:13:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:13:59,828 INFO L93 Difference]: Finished difference Result 86916 states and 159767 transitions. [2021-11-03 04:13:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:13:59,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-03 04:13:59,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:13:59,924 INFO L225 Difference]: With dead ends: 86916 [2021-11-03 04:13:59,925 INFO L226 Difference]: Without dead ends: 67772 [2021-11-03 04:13:59,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:13:59,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67772 states. [2021-11-03 04:14:01,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67772 to 35365. [2021-11-03 04:14:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35365 states, 35360 states have (on average 1.821606334841629) internal successors, (64412), 35364 states have internal predecessors, (64412), 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 04:14:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35365 states to 35365 states and 64412 transitions. [2021-11-03 04:14:01,455 INFO L78 Accepts]: Start accepts. Automaton has 35365 states and 64412 transitions. Word has length 73 [2021-11-03 04:14:01,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:01,455 INFO L470 AbstractCegarLoop]: Abstraction has 35365 states and 64412 transitions. [2021-11-03 04:14:01,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 35365 states and 64412 transitions. [2021-11-03 04:14:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 04:14:01,458 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:01,458 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:01,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:01,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:01,664 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:14:01,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:01,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1324389536, now seen corresponding path program 1 times [2021-11-03 04:14:01,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:01,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509322843] [2021-11-03 04:14:01,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:01,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:01,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:01,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:01,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 04:14:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:02,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:14:02,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:14:02,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:02,568 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 04:14:02,569 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:02,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509322843] [2021-11-03 04:14:02,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509322843] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:02,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:02,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 04:14:02,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470110830] [2021-11-03 04:14:02,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:14:02,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:14:02,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:14:02,571 INFO L87 Difference]: Start difference. First operand 35365 states and 64412 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:06,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:06,866 INFO L93 Difference]: Finished difference Result 135375 states and 248267 transitions. [2021-11-03 04:14:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-03 04:14:06,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 04:14:06,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:07,060 INFO L225 Difference]: With dead ends: 135375 [2021-11-03 04:14:07,060 INFO L226 Difference]: Without dead ends: 116260 [2021-11-03 04:14:07,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 04:14:07,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116260 states. [2021-11-03 04:14:09,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116260 to 53109. [2021-11-03 04:14:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53109 states, 53104 states have (on average 1.8165863211810787) internal successors, (96468), 53108 states have internal predecessors, (96468), 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 04:14:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53109 states to 53109 states and 96468 transitions. [2021-11-03 04:14:09,629 INFO L78 Accepts]: Start accepts. Automaton has 53109 states and 96468 transitions. Word has length 75 [2021-11-03 04:14:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:09,629 INFO L470 AbstractCegarLoop]: Abstraction has 53109 states and 96468 transitions. [2021-11-03 04:14:09,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:14:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 53109 states and 96468 transitions. [2021-11-03 04:14:09,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 04:14:09,631 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:09,632 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 04:14:09,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:09,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:09,848 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:14:09,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:09,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2050122868, now seen corresponding path program 1 times [2021-11-03 04:14:09,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:09,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91826930] [2021-11-03 04:14:09,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:09,849 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:09,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:09,850 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:09,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 04:14:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:10,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:14:10,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:10,673 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 04:14:10,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:10,985 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 04:14:10,985 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:10,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91826930] [2021-11-03 04:14:10,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91826930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:10,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:10,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 04:14:10,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113213098] [2021-11-03 04:14:10,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:14:10,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:10,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:14:10,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:14:10,988 INFO L87 Difference]: Start difference. First operand 53109 states and 96468 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 04:14:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:14:21,055 INFO L93 Difference]: Finished difference Result 237500 states and 434593 transitions. [2021-11-03 04:14:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:14:21,055 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 04:14:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:14:21,602 INFO L225 Difference]: With dead ends: 237500 [2021-11-03 04:14:21,602 INFO L226 Difference]: Without dead ends: 200641 [2021-11-03 04:14:21,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:14:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200641 states. [2021-11-03 04:14:26,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200641 to 78798. [2021-11-03 04:14:26,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78798 states, 78793 states have (on average 1.8250732933128577) internal successors, (143803), 78797 states have internal predecessors, (143803), 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 04:14:26,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78798 states to 78798 states and 143803 transitions. [2021-11-03 04:14:26,598 INFO L78 Accepts]: Start accepts. Automaton has 78798 states and 143803 transitions. Word has length 77 [2021-11-03 04:14:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:14:26,598 INFO L470 AbstractCegarLoop]: Abstraction has 78798 states and 143803 transitions. [2021-11-03 04:14:26,598 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 04:14:26,598 INFO L276 IsEmpty]: Start isEmpty. Operand 78798 states and 143803 transitions. [2021-11-03 04:14:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 04:14:26,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:14:26,601 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:14:26,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 04:14:26,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:14:26,817 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-03 04:14:26,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:14:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2098749639, now seen corresponding path program 1 times [2021-11-03 04:14:26,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:14:26,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834374798] [2021-11-03 04:14:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:14:26,818 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:14:26,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:14:26,819 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:14:26,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5504efee-8b06-408c-ac5a-5150ed6196bd/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 04:14:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:14:27,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:14:27,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:14:27,686 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 04:14:27,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:14:27,862 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 04:14:27,863 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:14:27,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834374798] [2021-11-03 04:14:27,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834374798] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:14:27,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:14:27,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 04:14:27,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502675857] [2021-11-03 04:14:27,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:14:27,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:14:27,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:14:27,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:14:27,865 INFO L87 Difference]: Start difference. First operand 78798 states and 143803 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)