./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs --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 d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:46:30,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:46:30,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:46:30,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:46:30,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:46:30,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:46:30,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:46:30,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:46:30,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:46:30,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:46:30,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:46:30,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:46:30,779 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:46:30,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:46:30,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:46:30,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:46:30,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:46:30,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:46:30,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:46:30,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:46:30,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:46:30,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:46:30,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:46:30,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:46:30,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:46:30,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:46:30,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:46:30,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:46:30,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:46:30,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:46:30,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:46:30,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:46:30,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:46:30,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:46:30,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:46:30,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:46:30,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:46:30,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:46:30,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:46:30,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:46:30,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:46:30,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:46:30,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:46:30,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:46:30,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:46:30,864 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:46:30,864 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:46:30,864 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:46:30,864 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:46:30,865 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:46:30,867 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:46:30,867 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:46:30,867 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:46:30,867 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:46:30,868 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:46:30,868 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:46:30,868 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:46:30,872 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:46:30,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:46:30,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:46:30,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:46:30,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:46:30,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:46:30,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:46:30,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:46:30,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:46:30,875 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:46:30,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:46:30,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:46:30,876 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:46:30,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:46:30,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:46:30,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:46:30,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:46:30,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:46:30,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:46:30,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:46:30,880 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:46:30,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:46:30,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:46:30,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:46:30,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:46:30,881 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_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 [2021-11-19 14:46:31,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:46:31,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:46:31,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:46:31,174 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:46:31,175 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:46:31,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2021-11-19 14:46:31,253 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/data/45221b12d/df74377e50c94e7a8890c63d0eb9404a/FLAGdad861488 [2021-11-19 14:46:31,896 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:46:31,896 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2021-11-19 14:46:31,919 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/data/45221b12d/df74377e50c94e7a8890c63d0eb9404a/FLAGdad861488 [2021-11-19 14:46:32,137 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/data/45221b12d/df74377e50c94e7a8890c63d0eb9404a [2021-11-19 14:46:32,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:46:32,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:46:32,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:32,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:46:32,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:46:32,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:32,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c56fdec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32, skipping insertion in model container [2021-11-19 14:46:32,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:32" (1/1) ... [2021-11-19 14:46:32,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:46:32,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:32,773 WARN L230 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_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2021-11-19 14:46:32,949 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:32,974 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) [2021-11-19 14:46:32,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3260ade6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:32, skipping insertion in model container [2021-11-19 14:46:32,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:32,977 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:46:32,979 INFO L158 Benchmark]: Toolchain (without parser) took 834.80ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 56.2MB in the beginning and 78.8MB in the end (delta: -22.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:46:32,981 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:46:32,983 INFO L158 Benchmark]: CACSL2BoogieTranslator took 830.55ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 56.0MB in the beginning and 78.8MB in the end (delta: -22.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:46:32,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 90.2MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 830.55ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 56.0MB in the beginning and 78.8MB in the end (delta: -22.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3055]: 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_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs --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 d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:46:35,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:46:35,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:46:35,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:46:35,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:46:35,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:46:35,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:46:35,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:46:35,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:46:35,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:46:35,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:46:35,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:46:35,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:46:35,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:46:35,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:46:35,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:46:35,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:46:35,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:46:35,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:46:35,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:46:35,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:46:35,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:46:35,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:46:35,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:46:35,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:46:35,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:46:35,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:46:35,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:46:35,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:46:35,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:46:35,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:46:35,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:46:35,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:46:35,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:46:35,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:46:35,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:46:35,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:46:35,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:46:35,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:46:35,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:46:35,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:46:35,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:46:35,485 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:46:35,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:46:35,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:46:35,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:46:35,487 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:46:35,487 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:46:35,487 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:46:35,488 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:46:35,488 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:46:35,488 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:46:35,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:46:35,489 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:46:35,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:46:35,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:46:35,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:46:35,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:46:35,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:46:35,492 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:46:35,492 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:46:35,492 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:46:35,493 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:46:35,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:46:35,493 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:46:35,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:46:35,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:46:35,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:46:35,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:46:35,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:46:35,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:46:35,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:46:35,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:46:35,494 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:46:35,495 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:35,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:46:35,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:46:35,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:46:35,495 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_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 [2021-11-19 14:46:35,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:46:35,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:46:35,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:46:35,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:46:35,973 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:46:35,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2021-11-19 14:46:36,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/data/40f9d0d76/5c96d18e78244db392dbfed15c27880c/FLAGe172b2064 [2021-11-19 14:46:36,819 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:46:36,820 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2021-11-19 14:46:36,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/data/40f9d0d76/5c96d18e78244db392dbfed15c27880c/FLAGe172b2064 [2021-11-19 14:46:36,991 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/data/40f9d0d76/5c96d18e78244db392dbfed15c27880c [2021-11-19 14:46:36,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:46:36,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:46:36,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:36,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:46:37,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:46:37,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:36" (1/1) ... [2021-11-19 14:46:37,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@160f784d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:37, skipping insertion in model container [2021-11-19 14:46:37,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:46:36" (1/1) ... [2021-11-19 14:46:37,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:46:37,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:37,602 WARN L230 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_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2021-11-19 14:46:37,793 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:37,811 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:46:37,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:46:37,931 WARN L230 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_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2021-11-19 14:46:37,967 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:37,972 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:46:38,019 WARN L230 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_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2021-11-19 14:46:38,089 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:46:38,121 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:46:38,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38 WrapperNode [2021-11-19 14:46:38,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:46:38,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:46:38,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:46:38,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:46:38,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (1/1) ... [2021-11-19 14:46:38,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (1/1) ... [2021-11-19 14:46:38,270 INFO L137 Inliner]: procedures = 96, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1059 [2021-11-19 14:46:38,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:46:38,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:46:38,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:46:38,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:46:38,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (1/1) ... [2021-11-19 14:46:38,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (1/1) ... [2021-11-19 14:46:38,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (1/1) ... [2021-11-19 14:46:38,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (1/1) ... [2021-11-19 14:46:38,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (1/1) ... [2021-11-19 14:46:38,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (1/1) ... [2021-11-19 14:46:38,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (1/1) ... [2021-11-19 14:46:38,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:46:38,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:46:38,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:46:38,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:46:38,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (1/1) ... [2021-11-19 14:46:38,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:46:38,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:46:38,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:46:38,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:46:38,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:46:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-19 14:46:38,505 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-19 14:46:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-19 14:46:38,505 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-19 14:46:38,505 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2021-11-19 14:46:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2021-11-19 14:46:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-19 14:46:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-19 14:46:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-11-19 14:46:38,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-11-19 14:46:38,506 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-19 14:46:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-19 14:46:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-19 14:46:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-19 14:46:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-19 14:46:38,507 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-19 14:46:38,507 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-19 14:46:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-19 14:46:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-19 14:46:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-19 14:46:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-19 14:46:38,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-19 14:46:38,508 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-19 14:46:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-19 14:46:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-19 14:46:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-19 14:46:38,509 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-19 14:46:38,509 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-19 14:46:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:46:38,510 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-19 14:46:38,510 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-19 14:46:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-19 14:46:38,511 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-19 14:46:38,511 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-19 14:46:38,511 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-19 14:46:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-19 14:46:38,512 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-19 14:46:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-19 14:46:38,512 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-19 14:46:38,512 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-19 14:46:38,512 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-19 14:46:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-19 14:46:38,513 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-19 14:46:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-19 14:46:38,513 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-19 14:46:38,513 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-19 14:46:38,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-19 14:46:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:46:38,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:46:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-19 14:46:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-19 14:46:38,709 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:46:38,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:46:39,930 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:46:39,950 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:46:39,951 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:46:39,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:39 BoogieIcfgContainer [2021-11-19 14:46:39,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:46:39,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:46:39,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:46:39,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:46:39,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:46:36" (1/3) ... [2021-11-19 14:46:39,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259763d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:46:39, skipping insertion in model container [2021-11-19 14:46:39,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:46:38" (2/3) ... [2021-11-19 14:46:39,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259763d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:46:39, skipping insertion in model container [2021-11-19 14:46:39,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:46:39" (3/3) ... [2021-11-19 14:46:39,963 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2021-11-19 14:46:39,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:46:39,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:46:40,041 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:46:40,049 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 [2021-11-19 14:46:40,049 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:46:40,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 438 states have (on average 1.6894977168949772) internal successors, (740), 459 states have internal predecessors, (740), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2021-11-19 14:46:40,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-19 14:46:40,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:40,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:40,127 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:40,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1065418536, now seen corresponding path program 1 times [2021-11-19 14:46:40,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:40,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105458600] [2021-11-19 14:46:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:40,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:40,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:40,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:40,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:46:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:40,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:46:40,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:40,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:41,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:41,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105458600] [2021-11-19 14:46:41,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105458600] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:41,229 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:41,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:46:41,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19246838] [2021-11-19 14:46:41,232 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:41,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:46:41,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:46:41,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:46:41,284 INFO L87 Difference]: Start difference. First operand has 560 states, 438 states have (on average 1.6894977168949772) internal successors, (740), 459 states have internal predecessors, (740), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-19 14:46:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:41,409 INFO L93 Difference]: Finished difference Result 581 states and 962 transitions. [2021-11-19 14:46:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:46:41,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 102 [2021-11-19 14:46:41,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:41,441 INFO L225 Difference]: With dead ends: 581 [2021-11-19 14:46:41,441 INFO L226 Difference]: Without dead ends: 552 [2021-11-19 14:46:41,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:46:41,449 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:41,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:46:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-19 14:46:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2021-11-19 14:46:41,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6875) internal successors, (729), 451 states have internal predecessors, (729), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2021-11-19 14:46:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 916 transitions. [2021-11-19 14:46:41,581 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 916 transitions. Word has length 102 [2021-11-19 14:46:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:41,583 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 916 transitions. [2021-11-19 14:46:41,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2021-11-19 14:46:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 916 transitions. [2021-11-19 14:46:41,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-19 14:46:41,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:41,594 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:41,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:46:41,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:41,795 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:41,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:41,796 INFO L85 PathProgramCache]: Analyzing trace with hash 782779500, now seen corresponding path program 1 times [2021-11-19 14:46:41,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:41,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213230917] [2021-11-19 14:46:41,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:41,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:41,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:41,800 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:41,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:46:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:42,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:46:42,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:42,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:42,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:42,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213230917] [2021-11-19 14:46:42,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213230917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:42,804 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:42,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:46:42,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695457050] [2021-11-19 14:46:42,811 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:42,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:46:42,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:42,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:46:42,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:46:42,816 INFO L87 Difference]: Start difference. First operand 552 states and 916 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:46:42,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:42,977 INFO L93 Difference]: Finished difference Result 1088 states and 1810 transitions. [2021-11-19 14:46:42,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:46:42,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 104 [2021-11-19 14:46:42,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:42,985 INFO L225 Difference]: With dead ends: 1088 [2021-11-19 14:46:42,985 INFO L226 Difference]: Without dead ends: 552 [2021-11-19 14:46:42,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:46:42,993 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 25 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:42,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 2705 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:46:42,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-19 14:46:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2021-11-19 14:46:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6736111111111112) internal successors, (723), 451 states have internal predecessors, (723), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2021-11-19 14:46:43,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 910 transitions. [2021-11-19 14:46:43,035 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 910 transitions. Word has length 104 [2021-11-19 14:46:43,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:43,035 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 910 transitions. [2021-11-19 14:46:43,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:46:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 910 transitions. [2021-11-19 14:46:43,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 14:46:43,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:43,042 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:43,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 14:46:43,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:43,258 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:43,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:43,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1234234250, now seen corresponding path program 1 times [2021-11-19 14:46:43,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:43,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302248287] [2021-11-19 14:46:43,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:43,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:43,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:43,264 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:43,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:46:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:43,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:46:43,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:43,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:44,361 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:44,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302248287] [2021-11-19 14:46:44,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302248287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:44,361 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:44,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-19 14:46:44,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126995428] [2021-11-19 14:46:44,362 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:44,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:46:44,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:46:44,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:46:44,364 INFO L87 Difference]: Start difference. First operand 552 states and 910 transitions. Second operand has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 14:46:44,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:44,530 INFO L93 Difference]: Finished difference Result 1046 states and 1727 transitions. [2021-11-19 14:46:44,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:46:44,532 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 109 [2021-11-19 14:46:44,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:44,538 INFO L225 Difference]: With dead ends: 1046 [2021-11-19 14:46:44,538 INFO L226 Difference]: Without dead ends: 546 [2021-11-19 14:46:44,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:46:44,543 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 213 mSDsluCounter, 4464 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 5361 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:44,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 5361 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:46:44,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-19 14:46:44,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2021-11-19 14:46:44,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 426 states have (on average 1.6666666666666667) internal successors, (710), 445 states have internal predecessors, (710), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2021-11-19 14:46:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 897 transitions. [2021-11-19 14:46:44,577 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 897 transitions. Word has length 109 [2021-11-19 14:46:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:44,578 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 897 transitions. [2021-11-19 14:46:44,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 14:46:44,579 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 897 transitions. [2021-11-19 14:46:44,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:46:44,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:44,584 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:44,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:44,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:44,801 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:44,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1967885915, now seen corresponding path program 1 times [2021-11-19 14:46:44,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:44,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111275060] [2021-11-19 14:46:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:44,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:44,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:44,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:44,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:46:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:45,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 14:46:45,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:45,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:45,795 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:45,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111275060] [2021-11-19 14:46:45,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111275060] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:45,796 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:45,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:46:45,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826736276] [2021-11-19 14:46:45,797 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:45,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:46:45,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:45,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:46:45,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:46:45,801 INFO L87 Difference]: Start difference. First operand 546 states and 897 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:46:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:45,985 INFO L93 Difference]: Finished difference Result 1049 states and 1728 transitions. [2021-11-19 14:46:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:46:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 110 [2021-11-19 14:46:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:45,992 INFO L225 Difference]: With dead ends: 1049 [2021-11-19 14:46:45,992 INFO L226 Difference]: Without dead ends: 546 [2021-11-19 14:46:45,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:46:46,004 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 121 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:46,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 3355 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:46:46,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-19 14:46:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2021-11-19 14:46:46,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 426 states have (on average 1.6103286384976525) internal successors, (686), 445 states have internal predecessors, (686), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2021-11-19 14:46:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 873 transitions. [2021-11-19 14:46:46,056 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 873 transitions. Word has length 110 [2021-11-19 14:46:46,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:46,056 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 873 transitions. [2021-11-19 14:46:46,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-19 14:46:46,057 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 873 transitions. [2021-11-19 14:46:46,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 14:46:46,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:46,063 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:46,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:46,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:46,278 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:46,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:46,279 INFO L85 PathProgramCache]: Analyzing trace with hash -764644192, now seen corresponding path program 1 times [2021-11-19 14:46:46,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:46,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840478782] [2021-11-19 14:46:46,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:46,280 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:46,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:46,281 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:46,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:46:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:46,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:46:46,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:46,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:47,191 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:47,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840478782] [2021-11-19 14:46:47,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840478782] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:47,191 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:47,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-19 14:46:47,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952142836] [2021-11-19 14:46:47,192 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:47,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:46:47,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:47,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:46:47,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:46:47,194 INFO L87 Difference]: Start difference. First operand 546 states and 873 transitions. Second operand has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 14:46:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:47,352 INFO L93 Difference]: Finished difference Result 1040 states and 1690 transitions. [2021-11-19 14:46:47,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:46:47,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 112 [2021-11-19 14:46:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:47,360 INFO L225 Difference]: With dead ends: 1040 [2021-11-19 14:46:47,360 INFO L226 Difference]: Without dead ends: 525 [2021-11-19 14:46:47,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:47,365 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 147 mSDsluCounter, 3419 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 4280 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:47,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 4280 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:46:47,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-19 14:46:47,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2021-11-19 14:46:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 405 states have (on average 1.6320987654320989) internal successors, (661), 424 states have internal predecessors, (661), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2021-11-19 14:46:47,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 848 transitions. [2021-11-19 14:46:47,394 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 848 transitions. Word has length 112 [2021-11-19 14:46:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:47,400 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 848 transitions. [2021-11-19 14:46:47,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 14:46:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 848 transitions. [2021-11-19 14:46:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 14:46:47,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:47,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:47,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:47,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:47,622 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:47,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:47,623 INFO L85 PathProgramCache]: Analyzing trace with hash 746636887, now seen corresponding path program 1 times [2021-11-19 14:46:47,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:47,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801939014] [2021-11-19 14:46:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:47,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:47,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:47,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:47,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:46:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:47,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:46:47,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:48,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 14:46:48,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:48,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801939014] [2021-11-19 14:46:48,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801939014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:46:48,655 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:46:48,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 14:46:48,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012096980] [2021-11-19 14:46:48,656 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:48,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:46:48,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:46:48,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:46:48,658 INFO L87 Difference]: Start difference. First operand 525 states and 848 transitions. Second operand has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 14:46:48,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:48,853 INFO L93 Difference]: Finished difference Result 1013 states and 1654 transitions. [2021-11-19 14:46:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:46:48,854 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 115 [2021-11-19 14:46:48,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:48,861 INFO L225 Difference]: With dead ends: 1013 [2021-11-19 14:46:48,861 INFO L226 Difference]: Without dead ends: 525 [2021-11-19 14:46:48,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:46:48,866 INFO L933 BasicCegarLoop]: 833 mSDtfsCounter, 30 mSDsluCounter, 7460 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8293 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:48,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 8293 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:46:48,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-19 14:46:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2021-11-19 14:46:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 405 states have (on average 1.6296296296296295) internal successors, (660), 424 states have internal predecessors, (660), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2021-11-19 14:46:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 847 transitions. [2021-11-19 14:46:48,895 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 847 transitions. Word has length 115 [2021-11-19 14:46:48,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:48,896 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 847 transitions. [2021-11-19 14:46:48,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 14:46:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 847 transitions. [2021-11-19 14:46:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 14:46:48,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:48,901 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:48,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:49,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:49,114 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:49,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:49,114 INFO L85 PathProgramCache]: Analyzing trace with hash -103270278, now seen corresponding path program 1 times [2021-11-19 14:46:49,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:49,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983742862] [2021-11-19 14:46:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:49,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:49,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:49,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:49,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:46:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:49,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:49,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:49,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:50,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:50,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:50,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983742862] [2021-11-19 14:46:50,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983742862] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:50,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:50,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-19 14:46:50,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205671246] [2021-11-19 14:46:50,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:50,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:50,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:50,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:50,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:50,189 INFO L87 Difference]: Start difference. First operand 525 states and 847 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:46:51,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:51,036 INFO L93 Difference]: Finished difference Result 1009 states and 1671 transitions. [2021-11-19 14:46:51,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:51,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2021-11-19 14:46:51,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:51,042 INFO L225 Difference]: With dead ends: 1009 [2021-11-19 14:46:51,043 INFO L226 Difference]: Without dead ends: 529 [2021-11-19 14:46:51,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:51,047 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 783 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:51,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 2106 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:46:51,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-19 14:46:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2021-11-19 14:46:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 408 states have (on average 1.625) internal successors, (663), 427 states have internal predecessors, (663), 96 states have call successors, (96), 25 states have call predecessors, (96), 24 states have return successors, (92), 89 states have call predecessors, (92), 91 states have call successors, (92) [2021-11-19 14:46:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 851 transitions. [2021-11-19 14:46:51,079 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 851 transitions. Word has length 116 [2021-11-19 14:46:51,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:51,080 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 851 transitions. [2021-11-19 14:46:51,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:46:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 851 transitions. [2021-11-19 14:46:51,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 14:46:51,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:51,085 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:51,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-19 14:46:51,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:51,301 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:51,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:51,303 INFO L85 PathProgramCache]: Analyzing trace with hash 243649490, now seen corresponding path program 1 times [2021-11-19 14:46:51,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:51,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249461032] [2021-11-19 14:46:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:51,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:51,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:51,305 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:51,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:46:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:51,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:51,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:51,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:52,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:52,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249461032] [2021-11-19 14:46:52,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249461032] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:52,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:52,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-19 14:46:52,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304501563] [2021-11-19 14:46:52,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:52,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:52,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:52,454 INFO L87 Difference]: Start difference. First operand 529 states and 851 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:46:53,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:53,251 INFO L93 Difference]: Finished difference Result 1018 states and 1678 transitions. [2021-11-19 14:46:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:53,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2021-11-19 14:46:53,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:53,258 INFO L225 Difference]: With dead ends: 1018 [2021-11-19 14:46:53,258 INFO L226 Difference]: Without dead ends: 534 [2021-11-19 14:46:53,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:53,262 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 793 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:53,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 2107 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:46:53,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-11-19 14:46:53,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2021-11-19 14:46:53,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 412 states have (on average 1.6189320388349515) internal successors, (667), 431 states have internal predecessors, (667), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2021-11-19 14:46:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 856 transitions. [2021-11-19 14:46:53,302 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 856 transitions. Word has length 118 [2021-11-19 14:46:53,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:53,303 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 856 transitions. [2021-11-19 14:46:53,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:46:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 856 transitions. [2021-11-19 14:46:53,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 14:46:53,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:53,308 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:53,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:53,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:53,525 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:53,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1893765370, now seen corresponding path program 1 times [2021-11-19 14:46:53,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:53,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022905774] [2021-11-19 14:46:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:53,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:53,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:53,528 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:53,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:46:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:53,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:53,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:54,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:54,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:54,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022905774] [2021-11-19 14:46:54,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022905774] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:54,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:54,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-19 14:46:54,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225487823] [2021-11-19 14:46:54,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:54,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:54,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:54,656 INFO L87 Difference]: Start difference. First operand 534 states and 856 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:46:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:55,438 INFO L93 Difference]: Finished difference Result 1029 states and 1687 transitions. [2021-11-19 14:46:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:55,439 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 120 [2021-11-19 14:46:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:55,445 INFO L225 Difference]: With dead ends: 1029 [2021-11-19 14:46:55,445 INFO L226 Difference]: Without dead ends: 540 [2021-11-19 14:46:55,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:55,449 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 796 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:55,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 2107 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:46:55,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-19 14:46:55,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 540. [2021-11-19 14:46:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 417 states have (on average 1.6115107913669064) internal successors, (672), 436 states have internal predecessors, (672), 96 states have call successors, (96), 27 states have call predecessors, (96), 26 states have return successors, (94), 89 states have call predecessors, (94), 91 states have call successors, (94) [2021-11-19 14:46:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 862 transitions. [2021-11-19 14:46:55,479 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 862 transitions. Word has length 120 [2021-11-19 14:46:55,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:55,481 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 862 transitions. [2021-11-19 14:46:55,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:46:55,481 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 862 transitions. [2021-11-19 14:46:55,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 14:46:55,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:55,501 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:55,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:55,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:55,717 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:55,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:55,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1197558838, now seen corresponding path program 1 times [2021-11-19 14:46:55,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:55,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042386752] [2021-11-19 14:46:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:55,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:55,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:55,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:55,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:46:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:56,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:46:56,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:56,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 14:46:56,833 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:56,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042386752] [2021-11-19 14:46:56,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042386752] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:46:56,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:46:56,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-11-19 14:46:56,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898042705] [2021-11-19 14:46:56,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:46:56,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:46:56,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:46:56,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:46:56,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:46:56,836 INFO L87 Difference]: Start difference. First operand 540 states and 862 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:46:57,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:46:57,594 INFO L93 Difference]: Finished difference Result 1042 states and 1698 transitions. [2021-11-19 14:46:57,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:46:57,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2021-11-19 14:46:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:46:57,599 INFO L225 Difference]: With dead ends: 1042 [2021-11-19 14:46:57,599 INFO L226 Difference]: Without dead ends: 547 [2021-11-19 14:46:57,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:46:57,603 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 793 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:46:57,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 2107 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:46:57,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-19 14:46:57,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2021-11-19 14:46:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 423 states have (on average 1.6028368794326242) internal successors, (678), 442 states have internal predecessors, (678), 96 states have call successors, (96), 28 states have call predecessors, (96), 27 states have return successors, (95), 89 states have call predecessors, (95), 91 states have call successors, (95) [2021-11-19 14:46:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 869 transitions. [2021-11-19 14:46:57,641 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 869 transitions. Word has length 122 [2021-11-19 14:46:57,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:46:57,642 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 869 transitions. [2021-11-19 14:46:57,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 14:46:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 869 transitions. [2021-11-19 14:46:57,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-19 14:46:57,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:46:57,647 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:46:57,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:46:57,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:46:57,862 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:46:57,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:46:57,862 INFO L85 PathProgramCache]: Analyzing trace with hash 706267002, now seen corresponding path program 1 times [2021-11-19 14:46:57,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:46:57,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358823292] [2021-11-19 14:46:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:57,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:46:57,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:46:57,864 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:46:57,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:46:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:58,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:46:58,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:46:58,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:46:58,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:46:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:46:59,564 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:46:59,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358823292] [2021-11-19 14:46:59,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358823292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:46:59,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1412181167] [2021-11-19 14:46:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:46:59,565 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:46:59,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:46:59,571 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:46:59,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 14:46:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:46:59,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:46:59,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:47:00,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:47:00,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1412181167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:00,619 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:47:00,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [11, 10] total 21 [2021-11-19 14:47:00,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866996323] [2021-11-19 14:47:00,619 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:00,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:47:00,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:00,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:47:00,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:47:00,622 INFO L87 Difference]: Start difference. First operand 547 states and 869 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:47:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:02,522 INFO L93 Difference]: Finished difference Result 1684 states and 2760 transitions. [2021-11-19 14:47:02,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:47:02,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 124 [2021-11-19 14:47:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:02,534 INFO L225 Difference]: With dead ends: 1684 [2021-11-19 14:47:02,535 INFO L226 Difference]: Without dead ends: 1182 [2021-11-19 14:47:02,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:47:02,540 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 3075 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3153 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:02,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3153 Valid, 1301 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 14:47:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2021-11-19 14:47:02,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1123. [2021-11-19 14:47:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 855 states have (on average 1.6198830409356726) internal successors, (1385), 894 states have internal predecessors, (1385), 214 states have call successors, (214), 51 states have call predecessors, (214), 53 states have return successors, (239), 208 states have call predecessors, (239), 209 states have call successors, (239) [2021-11-19 14:47:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1838 transitions. [2021-11-19 14:47:02,618 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1838 transitions. Word has length 124 [2021-11-19 14:47:02,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:02,619 INFO L470 AbstractCegarLoop]: Abstraction has 1123 states and 1838 transitions. [2021-11-19 14:47:02,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:47:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1838 transitions. [2021-11-19 14:47:02,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-19 14:47:02,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:02,624 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:02,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:02,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:03,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:47:03,041 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:47:03,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:03,041 INFO L85 PathProgramCache]: Analyzing trace with hash 419302151, now seen corresponding path program 1 times [2021-11-19 14:47:03,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:03,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567760440] [2021-11-19 14:47:03,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:03,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:03,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:03,042 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:03,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:47:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:03,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:47:03,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:47:03,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:04,611 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:47:04,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:04,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567760440] [2021-11-19 14:47:04,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567760440] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:47:04,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1425786160] [2021-11-19 14:47:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:04,612 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:47:04,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:47:04,617 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:47:04,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 14:47:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:04,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:47:04,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:47:05,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:47:05,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1425786160] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:05,607 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:47:05,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [11, 10] total 21 [2021-11-19 14:47:05,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20891361] [2021-11-19 14:47:05,607 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:05,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:47:05,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:05,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:47:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:47:05,609 INFO L87 Difference]: Start difference. First operand 1123 states and 1838 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:47:07,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:07,708 INFO L93 Difference]: Finished difference Result 3630 states and 6114 transitions. [2021-11-19 14:47:07,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:47:07,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 125 [2021-11-19 14:47:07,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:07,736 INFO L225 Difference]: With dead ends: 3630 [2021-11-19 14:47:07,736 INFO L226 Difference]: Without dead ends: 2552 [2021-11-19 14:47:07,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:47:07,746 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 2440 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:07,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2517 Valid, 1390 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:47:07,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2021-11-19 14:47:07,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2427. [2021-11-19 14:47:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 1810 states have (on average 1.623756906077348) internal successors, (2939), 1899 states have internal predecessors, (2939), 508 states have call successors, (508), 97 states have call predecessors, (508), 108 states have return successors, (642), 506 states have call predecessors, (642), 503 states have call successors, (642) [2021-11-19 14:47:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4089 transitions. [2021-11-19 14:47:07,909 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 4089 transitions. Word has length 125 [2021-11-19 14:47:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:07,910 INFO L470 AbstractCegarLoop]: Abstraction has 2427 states and 4089 transitions. [2021-11-19 14:47:07,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:47:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 4089 transitions. [2021-11-19 14:47:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-19 14:47:07,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:07,916 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:07,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:08,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:08,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:08,320 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:47:08,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:08,320 INFO L85 PathProgramCache]: Analyzing trace with hash 113330268, now seen corresponding path program 1 times [2021-11-19 14:47:08,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:08,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125393366] [2021-11-19 14:47:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:08,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:08,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:08,322 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:08,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:47:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:08,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:47:08,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:09,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:47:09,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:47:09,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:09,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125393366] [2021-11-19 14:47:09,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125393366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:47:09,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [865279780] [2021-11-19 14:47:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:09,782 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:47:09,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:47:09,782 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:47:09,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 14:47:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:10,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:47:10,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:47:10,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:47:10,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [865279780] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:10,816 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:47:10,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [11, 10] total 21 [2021-11-19 14:47:10,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805825384] [2021-11-19 14:47:10,817 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:10,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:47:10,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:10,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:47:10,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:47:10,818 INFO L87 Difference]: Start difference. First operand 2427 states and 4089 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:47:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:13,046 INFO L93 Difference]: Finished difference Result 8098 states and 14138 transitions. [2021-11-19 14:47:13,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:47:13,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 126 [2021-11-19 14:47:13,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:13,105 INFO L225 Difference]: With dead ends: 8098 [2021-11-19 14:47:13,105 INFO L226 Difference]: Without dead ends: 5716 [2021-11-19 14:47:13,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:47:13,127 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 1860 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:13,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1936 Valid, 1512 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:47:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2021-11-19 14:47:13,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 5459. [2021-11-19 14:47:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5459 states, 3974 states have (on average 1.6192752893809763) internal successors, (6435), 4190 states have internal predecessors, (6435), 1258 states have call successors, (1258), 189 states have call predecessors, (1258), 226 states have return successors, (1821), 1270 states have call predecessors, (1821), 1253 states have call successors, (1821) [2021-11-19 14:47:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 9514 transitions. [2021-11-19 14:47:13,548 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 9514 transitions. Word has length 126 [2021-11-19 14:47:13,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:13,549 INFO L470 AbstractCegarLoop]: Abstraction has 5459 states and 9514 transitions. [2021-11-19 14:47:13,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:47:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 9514 transitions. [2021-11-19 14:47:13,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-19 14:47:13,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:13,555 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:13,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:13,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:13,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:47:13,970 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:47:13,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:13,971 INFO L85 PathProgramCache]: Analyzing trace with hash -781859607, now seen corresponding path program 1 times [2021-11-19 14:47:13,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:13,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157710140] [2021-11-19 14:47:13,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:13,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:13,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:13,973 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:13,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:47:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:14,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:47:14,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:14,642 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:47:14,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:47:15,396 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:15,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157710140] [2021-11-19 14:47:15,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157710140] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:47:15,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1842613088] [2021-11-19 14:47:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:15,396 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:47:15,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:47:15,397 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:47:15,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-19 14:47:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:15,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:47:15,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:47:15,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:47:16,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1842613088] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:16,334 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:47:16,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [11, 10] total 21 [2021-11-19 14:47:16,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294473284] [2021-11-19 14:47:16,334 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:16,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:47:16,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:16,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:47:16,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:47:16,336 INFO L87 Difference]: Start difference. First operand 5459 states and 9514 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:47:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:18,483 INFO L93 Difference]: Finished difference Result 18618 states and 34242 transitions. [2021-11-19 14:47:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:47:18,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 127 [2021-11-19 14:47:18,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:18,630 INFO L225 Difference]: With dead ends: 18618 [2021-11-19 14:47:18,630 INFO L226 Difference]: Without dead ends: 13204 [2021-11-19 14:47:18,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:47:18,668 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 3062 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3137 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:18,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3137 Valid, 1258 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:47:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13204 states. [2021-11-19 14:47:19,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13204 to 12711. [2021-11-19 14:47:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12711 states, 9018 states have (on average 1.6095586604568641) internal successors, (14515), 9561 states have internal predecessors, (14515), 3208 states have call successors, (3208), 373 states have call predecessors, (3208), 484 states have return successors, (5418), 3266 states have call predecessors, (5418), 3203 states have call successors, (5418) [2021-11-19 14:47:19,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12711 states to 12711 states and 23141 transitions. [2021-11-19 14:47:19,847 INFO L78 Accepts]: Start accepts. Automaton has 12711 states and 23141 transitions. Word has length 127 [2021-11-19 14:47:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:19,848 INFO L470 AbstractCegarLoop]: Abstraction has 12711 states and 23141 transitions. [2021-11-19 14:47:19,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:47:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand 12711 states and 23141 transitions. [2021-11-19 14:47:19,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-19 14:47:19,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:19,853 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:19,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:20,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:20,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:47:20,259 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:47:20,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1532029246, now seen corresponding path program 1 times [2021-11-19 14:47:20,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:20,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544177615] [2021-11-19 14:47:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:20,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:20,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:20,261 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:20,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:47:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:20,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:47:20,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 14:47:21,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 14:47:21,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:21,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544177615] [2021-11-19 14:47:21,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544177615] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:47:21,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [499142888] [2021-11-19 14:47:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:21,831 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:47:21,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:47:21,831 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:47:21,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-19 14:47:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:22,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:47:22,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:22,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:47:22,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-19 14:47:22,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [499142888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:22,799 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:47:22,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [11, 10] total 21 [2021-11-19 14:47:22,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835668352] [2021-11-19 14:47:22,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:22,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:47:22,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:22,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:47:22,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:47:22,801 INFO L87 Difference]: Start difference. First operand 12711 states and 23141 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:47:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:25,740 INFO L93 Difference]: Finished difference Result 44003 states and 87563 transitions. [2021-11-19 14:47:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:47:25,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 128 [2021-11-19 14:47:25,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:26,017 INFO L225 Difference]: With dead ends: 44003 [2021-11-19 14:47:26,017 INFO L226 Difference]: Without dead ends: 31327 [2021-11-19 14:47:26,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:47:26,329 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 3023 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 763 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:26,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3097 Valid, 1321 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [763 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 14:47:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31327 states. [2021-11-19 14:47:28,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31327 to 30536. [2021-11-19 14:47:28,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30536 states, 21125 states have (on average 1.5965443786982247) internal successors, (33727), 22519 states have internal predecessors, (33727), 8350 states have call successors, (8350), 740 states have call predecessors, (8350), 1060 states have return successors, (16892), 8553 states have call predecessors, (16892), 8345 states have call successors, (16892) [2021-11-19 14:47:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30536 states to 30536 states and 58969 transitions. [2021-11-19 14:47:29,474 INFO L78 Accepts]: Start accepts. Automaton has 30536 states and 58969 transitions. Word has length 128 [2021-11-19 14:47:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:47:29,474 INFO L470 AbstractCegarLoop]: Abstraction has 30536 states and 58969 transitions. [2021-11-19 14:47:29,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 5 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-19 14:47:29,475 INFO L276 IsEmpty]: Start isEmpty. Operand 30536 states and 58969 transitions. [2021-11-19 14:47:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-19 14:47:29,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:47:29,505 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:47:29,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:29,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:47:29,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:47:29,920 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:47:29,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:47:29,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2051223718, now seen corresponding path program 1 times [2021-11-19 14:47:29,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:47:29,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2082588190] [2021-11-19 14:47:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:47:29,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:47:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:47:29,924 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:47:29,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:47:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:47:30,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 14:47:30,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:47:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-19 14:47:30,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:47:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-19 14:47:31,652 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:47:31,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2082588190] [2021-11-19 14:47:31,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2082588190] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:47:31,653 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:47:31,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-11-19 14:47:31,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424739058] [2021-11-19 14:47:31,653 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:47:31,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 14:47:31,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:47:31,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 14:47:31,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:47:31,656 INFO L87 Difference]: Start difference. First operand 30536 states and 58969 transitions. Second operand has 16 states, 16 states have (on average 9.0625) internal successors, (145), 12 states have internal predecessors, (145), 6 states have call successors, (29), 4 states have call predecessors, (29), 8 states have return successors, (28), 10 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-19 14:47:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:47:54,216 INFO L93 Difference]: Finished difference Result 193503 states and 428063 transitions. [2021-11-19 14:47:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 14:47:54,218 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.0625) internal successors, (145), 12 states have internal predecessors, (145), 6 states have call successors, (29), 4 states have call predecessors, (29), 8 states have return successors, (28), 10 states have call predecessors, (28), 5 states have call successors, (28) Word has length 190 [2021-11-19 14:47:54,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:47:56,592 INFO L225 Difference]: With dead ends: 193503 [2021-11-19 14:47:56,592 INFO L226 Difference]: Without dead ends: 163012 [2021-11-19 14:47:57,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=294, Invalid=1428, Unknown=0, NotChecked=0, Total=1722 [2021-11-19 14:47:57,329 INFO L933 BasicCegarLoop]: 1792 mSDtfsCounter, 7311 mSDsluCounter, 6276 mSDsCounter, 0 mSdLazyCounter, 11532 mSolverCounterSat, 3143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7348 SdHoareTripleChecker+Valid, 8068 SdHoareTripleChecker+Invalid, 14675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3143 IncrementalHoareTripleChecker+Valid, 11532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:47:57,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7348 Valid, 8068 Invalid, 14675 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3143 Valid, 11532 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2021-11-19 14:47:57,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163012 states. [2021-11-19 14:48:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163012 to 126252. [2021-11-19 14:48:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126252 states, 83820 states have (on average 1.5754831782390837) internal successors, (132057), 90098 states have internal predecessors, (132057), 38544 states have call successors, (38544), 2211 states have call predecessors, (38544), 3887 states have return successors, (96632), 39815 states have call predecessors, (96632), 38539 states have call successors, (96632) [2021-11-19 14:48:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126252 states to 126252 states and 267233 transitions. [2021-11-19 14:48:11,648 INFO L78 Accepts]: Start accepts. Automaton has 126252 states and 267233 transitions. Word has length 190 [2021-11-19 14:48:11,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:48:11,649 INFO L470 AbstractCegarLoop]: Abstraction has 126252 states and 267233 transitions. [2021-11-19 14:48:11,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.0625) internal successors, (145), 12 states have internal predecessors, (145), 6 states have call successors, (29), 4 states have call predecessors, (29), 8 states have return successors, (28), 10 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-19 14:48:11,649 INFO L276 IsEmpty]: Start isEmpty. Operand 126252 states and 267233 transitions. [2021-11-19 14:48:11,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-19 14:48:11,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:48:11,779 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:48:11,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:48:11,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:48:11,995 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:48:11,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:48:11,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1145346367, now seen corresponding path program 1 times [2021-11-19 14:48:11,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:48:11,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878635780] [2021-11-19 14:48:11,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:48:11,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:48:11,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:48:11,998 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:48:12,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b06aa3d-1ae3-4565-8c57-1c57ce14d8fb/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:48:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:48:12,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 989 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:48:12,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:48:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-19 14:48:12,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:48:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-19 14:48:13,330 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:48:13,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878635780] [2021-11-19 14:48:13,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878635780] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:48:13,331 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:48:13,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2021-11-19 14:48:13,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572480373] [2021-11-19 14:48:13,331 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:48:13,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:48:13,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:48:13,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:48:13,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:48:13,333 INFO L87 Difference]: Start difference. First operand 126252 states and 267233 transitions. Second operand has 10 states, 9 states have (on average 24.333333333333332) internal successors, (219), 9 states have internal predecessors, (219), 3 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (41), 3 states have call predecessors, (41), 3 states have call successors, (41)