./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.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_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/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_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/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_827d4256-5f22-4ac5-88f5-89a4b119f91c/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 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:39:06,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:39:06,762 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:39:06,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:39:06,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:39:06,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:39:06,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:39:06,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:39:06,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:39:06,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:39:06,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:39:06,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:39:06,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:39:06,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:39:06,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:39:06,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:39:06,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:39:06,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:39:06,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:39:06,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:39:06,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:39:06,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:39:06,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:39:06,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:39:06,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:39:06,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:39:06,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:39:06,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:39:06,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:39:06,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:39:06,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:39:06,895 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:39:06,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:39:06,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:39:06,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:39:06,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:39:06,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:39:06,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:39:06,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:39:06,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:39:06,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:39:06,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:39:06,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:39:06,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:39:06,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:39:06,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:39:06,951 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:39:06,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:39:06,957 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:39:06,958 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:39:06,958 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:39:06,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:39:06,959 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:39:06,960 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:39:06,960 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:39:06,960 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:39:06,960 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:39:06,960 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:39:06,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:39:06,962 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:39:06,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:39:06,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:39:06,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:39:06,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:39:06,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:39:06,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:39:06,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:39:06,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:39:06,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:39:06,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:39:06,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:39:06,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:39:06,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:39:06,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:39:06,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:39:06,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:39:06,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:39:06,967 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:39:06,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:39:06,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:39:06,967 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:39:06,967 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:39:06,968 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_827d4256-5f22-4ac5-88f5-89a4b119f91c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2021-11-19 13:39:07,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:39:07,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:39:07,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:39:07,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:39:07,279 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:39:07,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2021-11-19 13:39:07,355 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/data/1f238b16a/eb715653f1124e629a548067da16754c/FLAGa2a768c4b [2021-11-19 13:39:08,097 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:39:08,098 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2021-11-19 13:39:08,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/data/1f238b16a/eb715653f1124e629a548067da16754c/FLAGa2a768c4b [2021-11-19 13:39:08,274 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/data/1f238b16a/eb715653f1124e629a548067da16754c [2021-11-19 13:39:08,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:39:08,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:39:08,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:39:08,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:39:08,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:39:08,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:08" (1/1) ... [2021-11-19 13:39:08,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716e897b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:08, skipping insertion in model container [2021-11-19 13:39:08,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:08" (1/1) ... [2021-11-19 13:39:08,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:39:08,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:39:09,048 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_827d4256-5f22-4ac5-88f5-89a4b119f91c/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2021-11-19 13:39:09,051 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:39:09,074 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 13:39:09,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7905b403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:09, skipping insertion in model container [2021-11-19 13:39:09,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:39:09,076 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:39:09,078 INFO L158 Benchmark]: Toolchain (without parser) took 796.47ms. Allocated memory is still 115.3MB. Free memory was 76.0MB in the beginning and 75.3MB in the end (delta: 678.3kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 13:39:09,079 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:39:09,082 INFO L158 Benchmark]: CACSL2BoogieTranslator took 790.51ms. Allocated memory is still 115.3MB. Free memory was 75.8MB in the beginning and 75.3MB in the end (delta: 487.9kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 13:39:09,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 94.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 790.51ms. Allocated memory is still 115.3MB. Free memory was 75.8MB in the beginning and 75.3MB in the end (delta: 487.9kB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3167]: 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_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/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_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/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_827d4256-5f22-4ac5-88f5-89a4b119f91c/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 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:39:11,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:39:11,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:39:11,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:39:11,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:39:11,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:39:11,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:39:11,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:39:11,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:39:11,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:39:11,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:39:11,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:39:11,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:39:11,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:39:11,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:39:11,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:39:11,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:39:11,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:39:11,419 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:39:11,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:39:11,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:39:11,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:39:11,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:39:11,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:39:11,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:39:11,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:39:11,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:39:11,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:39:11,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:39:11,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:39:11,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:39:11,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:39:11,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:39:11,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:39:11,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:39:11,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:39:11,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:39:11,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:39:11,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:39:11,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:39:11,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:39:11,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:39:11,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:39:11,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:39:11,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:39:11,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:39:11,510 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:39:11,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:39:11,511 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:39:11,511 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:39:11,511 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:39:11,512 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:39:11,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:39:11,514 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:39:11,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:39:11,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:39:11,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:39:11,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:39:11,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:39:11,516 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:39:11,516 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:39:11,517 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:39:11,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:39:11,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:39:11,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:39:11,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:39:11,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:39:11,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:39:11,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:39:11,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:39:11,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:39:11,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:39:11,520 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:39:11,520 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:39:11,521 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:39:11,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:39:11,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:39:11,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:39:11,522 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_827d4256-5f22-4ac5-88f5-89a4b119f91c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8333bf118d61dc3e3ddedc658c9d6fef28fa288c9b6abdc361c7a0f5f6e109b7 [2021-11-19 13:39:11,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:39:11,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:39:11,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:39:11,973 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:39:11,974 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:39:11,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2021-11-19 13:39:12,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/data/be6042dfb/16d9335823bd46eb97f35369bfe8f6b9/FLAG5387ac382 [2021-11-19 13:39:12,774 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:39:12,775 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c [2021-11-19 13:39:12,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/data/be6042dfb/16d9335823bd46eb97f35369bfe8f6b9/FLAG5387ac382 [2021-11-19 13:39:13,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/data/be6042dfb/16d9335823bd46eb97f35369bfe8f6b9 [2021-11-19 13:39:13,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:39:13,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:39:13,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:39:13,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:39:13,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:39:13,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:13" (1/1) ... [2021-11-19 13:39:13,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c9b39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:13, skipping insertion in model container [2021-11-19 13:39:13,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:39:13" (1/1) ... [2021-11-19 13:39:13,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:39:13,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:39:13,873 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_827d4256-5f22-4ac5-88f5-89a4b119f91c/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2021-11-19 13:39:13,876 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:39:13,889 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:39:13,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:39:14,081 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_827d4256-5f22-4ac5-88f5-89a4b119f91c/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2021-11-19 13:39:14,081 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:39:14,087 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:39:14,196 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_827d4256-5f22-4ac5-88f5-89a4b119f91c/sv-benchmarks/c/product-lines/elevator_spec3_product24.cil.c[75121,75134] [2021-11-19 13:39:14,197 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:39:14,229 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:39:14,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14 WrapperNode [2021-11-19 13:39:14,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:39:14,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:39:14,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:39:14,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:39:14,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (1/1) ... [2021-11-19 13:39:14,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (1/1) ... [2021-11-19 13:39:14,338 INFO L137 Inliner]: procedures = 98, calls = 359, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 901 [2021-11-19 13:39:14,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:39:14,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:39:14,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:39:14,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:39:14,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (1/1) ... [2021-11-19 13:39:14,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (1/1) ... [2021-11-19 13:39:14,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (1/1) ... [2021-11-19 13:39:14,357 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (1/1) ... [2021-11-19 13:39:14,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (1/1) ... [2021-11-19 13:39:14,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (1/1) ... [2021-11-19 13:39:14,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (1/1) ... [2021-11-19 13:39:14,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:39:14,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:39:14,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:39:14,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:39:14,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (1/1) ... [2021-11-19 13:39:14,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:39:14,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:39:14,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:39:14,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:39:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-11-19 13:39:14,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-11-19 13:39:14,520 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-19 13:39:14,520 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-19 13:39:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-19 13:39:14,521 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-19 13:39:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-19 13:39:14,521 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-19 13:39:14,521 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-19 13:39:14,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-19 13:39:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-19 13:39:14,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-19 13:39:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-19 13:39:14,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-19 13:39:14,522 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-19 13:39:14,522 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-19 13:39:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-19 13:39:14,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-19 13:39:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-19 13:39:14,523 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-19 13:39:14,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:39:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-11-19 13:39:14,524 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2021-11-19 13:39:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-19 13:39:14,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-19 13:39:14,524 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-11-19 13:39:14,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-11-19 13:39:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-11-19 13:39:14,525 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-11-19 13:39:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-19 13:39:14,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-19 13:39:14,525 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-19 13:39:14,525 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-19 13:39:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-19 13:39:14,526 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-19 13:39:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-19 13:39:14,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-19 13:39:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:39:14,526 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2021-11-19 13:39:14,527 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2021-11-19 13:39:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-19 13:39:14,527 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-19 13:39:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2021-11-19 13:39:14,527 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2021-11-19 13:39:14,527 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-19 13:39:14,528 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-19 13:39:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-19 13:39:14,528 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-19 13:39:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-19 13:39:14,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-19 13:39:14,528 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-19 13:39:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-19 13:39:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-19 13:39:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-19 13:39:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2021-11-19 13:39:14,529 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2021-11-19 13:39:14,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:39:14,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:39:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-19 13:39:14,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-19 13:39:14,530 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2021-11-19 13:39:14,545 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2021-11-19 13:39:14,740 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:39:14,743 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:39:16,157 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:39:16,171 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:39:16,171 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:39:16,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:16 BoogieIcfgContainer [2021-11-19 13:39:16,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:39:16,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:39:16,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:39:16,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:39:16,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:39:13" (1/3) ... [2021-11-19 13:39:16,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e806532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:16, skipping insertion in model container [2021-11-19 13:39:16,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:39:14" (2/3) ... [2021-11-19 13:39:16,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e806532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:39:16, skipping insertion in model container [2021-11-19 13:39:16,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:39:16" (3/3) ... [2021-11-19 13:39:16,183 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product24.cil.c [2021-11-19 13:39:16,188 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:39:16,189 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:39:16,245 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:39:16,257 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 13:39:16,257 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:39:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 620 states, 474 states have (on average 1.6582278481012658) internal successors, (786), 494 states have internal predecessors, (786), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) [2021-11-19 13:39:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:39:16,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:16,326 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:16,327 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:16,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1970042656, now seen corresponding path program 1 times [2021-11-19 13:39:16,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:16,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711088357] [2021-11-19 13:39:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:16,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:16,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:16,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:16,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:39:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:16,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:39:16,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:17,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:17,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:17,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711088357] [2021-11-19 13:39:17,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711088357] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:17,655 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:17,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-19 13:39:17,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151467564] [2021-11-19 13:39:17,659 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:17,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:39:17,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:17,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:39:17,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:39:17,712 INFO L87 Difference]: Start difference. First operand has 620 states, 474 states have (on average 1.6582278481012658) internal successors, (786), 494 states have internal predecessors, (786), 115 states have call successors, (115), 29 states have call predecessors, (115), 29 states have return successors, (115), 111 states have call predecessors, (115), 115 states have call successors, (115) Second operand has 11 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:18,142 INFO L93 Difference]: Finished difference Result 1243 states and 2053 transitions. [2021-11-19 13:39:18,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:39:18,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 67 [2021-11-19 13:39:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:18,183 INFO L225 Difference]: With dead ends: 1243 [2021-11-19 13:39:18,183 INFO L226 Difference]: Without dead ends: 631 [2021-11-19 13:39:18,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 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 13:39:18,201 INFO L933 BasicCegarLoop]: 1000 mSDtfsCounter, 214 mSDsluCounter, 3979 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 4979 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:18,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 4979 Invalid, 89 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:39:18,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2021-11-19 13:39:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 623. [2021-11-19 13:39:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 477 states have (on average 1.649895178197065) internal successors, (787), 497 states have internal predecessors, (787), 116 states have call successors, (116), 29 states have call predecessors, (116), 29 states have return successors, (115), 110 states have call predecessors, (115), 113 states have call successors, (115) [2021-11-19 13:39:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1018 transitions. [2021-11-19 13:39:18,381 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1018 transitions. Word has length 67 [2021-11-19 13:39:18,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:18,383 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 1018 transitions. [2021-11-19 13:39:18,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1018 transitions. [2021-11-19 13:39:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 13:39:18,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:18,397 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:18,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:18,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:18,615 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:18,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:18,616 INFO L85 PathProgramCache]: Analyzing trace with hash 262212232, now seen corresponding path program 1 times [2021-11-19 13:39:18,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:18,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555363778] [2021-11-19 13:39:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:18,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:18,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:18,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:18,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:39:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:18,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:39:18,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:19,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:19,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:19,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555363778] [2021-11-19 13:39:19,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555363778] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:19,555 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:19,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-19 13:39:19,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232126604] [2021-11-19 13:39:19,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:19,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:39:19,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:19,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:39:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:39:19,558 INFO L87 Difference]: Start difference. First operand 623 states and 1018 transitions. Second operand has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:19,821 INFO L93 Difference]: Finished difference Result 1251 states and 2054 transitions. [2021-11-19 13:39:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:39:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 68 [2021-11-19 13:39:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:19,830 INFO L225 Difference]: With dead ends: 1251 [2021-11-19 13:39:19,830 INFO L226 Difference]: Without dead ends: 644 [2021-11-19 13:39:19,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 125 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 13:39:19,836 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 186 mSDsluCounter, 4971 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 5972 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:19,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 5972 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:39:19,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2021-11-19 13:39:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 636. [2021-11-19 13:39:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 487 states have (on average 1.646817248459959) internal successors, (802), 509 states have internal predecessors, (802), 117 states have call successors, (117), 29 states have call predecessors, (117), 31 states have return successors, (118), 111 states have call predecessors, (118), 114 states have call successors, (118) [2021-11-19 13:39:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1037 transitions. [2021-11-19 13:39:19,896 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1037 transitions. Word has length 68 [2021-11-19 13:39:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:19,897 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 1037 transitions. [2021-11-19 13:39:19,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:19,897 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1037 transitions. [2021-11-19 13:39:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 13:39:19,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:19,900 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:19,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 13:39:20,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:20,116 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:20,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:20,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2105216956, now seen corresponding path program 1 times [2021-11-19 13:39:20,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:20,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925412389] [2021-11-19 13:39:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:20,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:20,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:20,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:20,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:39:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:20,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:39:20,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:20,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:21,032 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:21,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925412389] [2021-11-19 13:39:21,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925412389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:21,036 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:21,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-19 13:39:21,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092150206] [2021-11-19 13:39:21,038 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:21,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:39:21,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:21,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:39:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:39:21,040 INFO L87 Difference]: Start difference. First operand 636 states and 1037 transitions. Second operand has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:21,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:21,363 INFO L93 Difference]: Finished difference Result 1277 states and 2093 transitions. [2021-11-19 13:39:21,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:39:21,365 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 69 [2021-11-19 13:39:21,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:21,372 INFO L225 Difference]: With dead ends: 1277 [2021-11-19 13:39:21,372 INFO L226 Difference]: Without dead ends: 657 [2021-11-19 13:39:21,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 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 13:39:21,378 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 173 mSDsluCounter, 7855 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 8853 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:21,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 8853 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:39:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-11-19 13:39:21,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 649. [2021-11-19 13:39:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 497 states have (on average 1.6438631790744467) internal successors, (817), 521 states have internal predecessors, (817), 118 states have call successors, (118), 29 states have call predecessors, (118), 33 states have return successors, (121), 112 states have call predecessors, (121), 115 states have call successors, (121) [2021-11-19 13:39:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1056 transitions. [2021-11-19 13:39:21,417 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1056 transitions. Word has length 69 [2021-11-19 13:39:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:21,418 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 1056 transitions. [2021-11-19 13:39:21,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1056 transitions. [2021-11-19 13:39:21,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 13:39:21,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:21,421 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:21,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:21,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:21,645 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:21,646 INFO L85 PathProgramCache]: Analyzing trace with hash 849595948, now seen corresponding path program 1 times [2021-11-19 13:39:21,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:21,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335366519] [2021-11-19 13:39:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:21,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:21,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:21,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:21,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:39:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:21,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:39:21,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:22,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:22,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:22,551 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:22,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335366519] [2021-11-19 13:39:22,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335366519] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:22,552 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:22,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-19 13:39:22,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057662189] [2021-11-19 13:39:22,552 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:22,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:39:22,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:22,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:39:22,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:39:22,554 INFO L87 Difference]: Start difference. First operand 649 states and 1056 transitions. Second operand has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:22,816 INFO L93 Difference]: Finished difference Result 1299 states and 2126 transitions. [2021-11-19 13:39:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:39:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 70 [2021-11-19 13:39:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:22,824 INFO L225 Difference]: With dead ends: 1299 [2021-11-19 13:39:22,824 INFO L226 Difference]: Without dead ends: 666 [2021-11-19 13:39:22,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 129 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 13:39:22,830 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 103 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 6809 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:22,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 6809 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:39:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-19 13:39:22,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 662. [2021-11-19 13:39:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 507 states have (on average 1.641025641025641) internal successors, (832), 533 states have internal predecessors, (832), 119 states have call successors, (119), 29 states have call predecessors, (119), 35 states have return successors, (124), 113 states have call predecessors, (124), 116 states have call successors, (124) [2021-11-19 13:39:22,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1075 transitions. [2021-11-19 13:39:22,867 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1075 transitions. Word has length 70 [2021-11-19 13:39:22,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:22,867 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 1075 transitions. [2021-11-19 13:39:22,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1075 transitions. [2021-11-19 13:39:22,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 13:39:22,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:22,870 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:22,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 13:39:23,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:23,092 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:23,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:23,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1744485741, now seen corresponding path program 1 times [2021-11-19 13:39:23,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:23,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260329086] [2021-11-19 13:39:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:23,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:23,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:23,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:23,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:39:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:23,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:39:23,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:23,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:24,010 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:24,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260329086] [2021-11-19 13:39:24,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260329086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:24,011 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:24,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-19 13:39:24,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411392254] [2021-11-19 13:39:24,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:24,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:39:24,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:24,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:39:24,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:39:24,013 INFO L87 Difference]: Start difference. First operand 662 states and 1075 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 13:39:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:24,184 INFO L93 Difference]: Finished difference Result 1319 states and 2156 transitions. [2021-11-19 13:39:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:39:24,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 70 [2021-11-19 13:39:24,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:24,191 INFO L225 Difference]: With dead ends: 1319 [2021-11-19 13:39:24,192 INFO L226 Difference]: Without dead ends: 673 [2021-11-19 13:39:24,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:39:24,197 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 242 mSDsluCounter, 3897 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 4886 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:24,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 4886 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:39:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-19 13:39:24,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 671. [2021-11-19 13:39:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 515 states have (on average 1.6407766990291262) internal successors, (845), 542 states have internal predecessors, (845), 119 states have call successors, (119), 29 states have call predecessors, (119), 36 states have return successors, (128), 113 states have call predecessors, (128), 116 states have call successors, (128) [2021-11-19 13:39:24,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1092 transitions. [2021-11-19 13:39:24,247 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1092 transitions. Word has length 70 [2021-11-19 13:39:24,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:24,247 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 1092 transitions. [2021-11-19 13:39:24,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 13:39:24,248 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1092 transitions. [2021-11-19 13:39:24,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 13:39:24,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:24,250 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:24,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:24,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:24,467 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:24,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1772077202, now seen corresponding path program 1 times [2021-11-19 13:39:24,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:24,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271167234] [2021-11-19 13:39:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:24,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:24,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:24,470 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:24,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:39:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:24,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:39:24,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:24,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:25,172 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:25,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271167234] [2021-11-19 13:39:25,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271167234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:25,172 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:25,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:39:25,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733380534] [2021-11-19 13:39:25,172 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:25,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:39:25,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:25,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:39:25,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:39:25,174 INFO L87 Difference]: Start difference. First operand 671 states and 1092 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:39:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:25,241 INFO L93 Difference]: Finished difference Result 1318 states and 2149 transitions. [2021-11-19 13:39:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:39:25,242 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 71 [2021-11-19 13:39:25,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:25,253 INFO L225 Difference]: With dead ends: 1318 [2021-11-19 13:39:25,253 INFO L226 Difference]: Without dead ends: 581 [2021-11-19 13:39:25,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:39:25,261 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 35 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:25,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 1971 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:39:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-11-19 13:39:25,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2021-11-19 13:39:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6164383561643836) internal successors, (708), 456 states have internal predecessors, (708), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-19 13:39:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 935 transitions. [2021-11-19 13:39:25,290 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 935 transitions. Word has length 71 [2021-11-19 13:39:25,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:25,292 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 935 transitions. [2021-11-19 13:39:25,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:39:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 935 transitions. [2021-11-19 13:39:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 13:39:25,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:25,297 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:25,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:25,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:25,514 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:25,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1290189160, now seen corresponding path program 1 times [2021-11-19 13:39:25,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:25,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034679475] [2021-11-19 13:39:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:25,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:25,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:25,517 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:25,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:39:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:25,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:39:25,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:26,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:26,527 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:26,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034679475] [2021-11-19 13:39:26,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034679475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:26,527 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:26,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 13:39:26,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913294392] [2021-11-19 13:39:26,527 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:26,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:39:26,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:26,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:39:26,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:39:26,529 INFO L87 Difference]: Start difference. First operand 581 states and 935 transitions. Second operand has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:26,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:26,749 INFO L93 Difference]: Finished difference Result 1149 states and 1858 transitions. [2021-11-19 13:39:26,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:39:26,750 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 71 [2021-11-19 13:39:26,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:26,756 INFO L225 Difference]: With dead ends: 1149 [2021-11-19 13:39:26,756 INFO L226 Difference]: Without dead ends: 581 [2021-11-19 13:39:26,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 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 13:39:26,762 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 68 mSDsluCounter, 6390 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 7307 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:26,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 7307 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:39:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-11-19 13:39:26,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2021-11-19 13:39:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6141552511415524) internal successors, (707), 456 states have internal predecessors, (707), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-19 13:39:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 934 transitions. [2021-11-19 13:39:26,788 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 934 transitions. Word has length 71 [2021-11-19 13:39:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:26,788 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 934 transitions. [2021-11-19 13:39:26,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 934 transitions. [2021-11-19 13:39:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 13:39:26,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:26,791 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:26,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:27,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:27,008 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:27,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:27,008 INFO L85 PathProgramCache]: Analyzing trace with hash 774241932, now seen corresponding path program 1 times [2021-11-19 13:39:27,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:27,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3913169] [2021-11-19 13:39:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:27,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:27,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:27,011 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:27,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:39:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:27,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:39:27,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:27,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:27,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:27,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3913169] [2021-11-19 13:39:27,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3913169] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:27,960 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:27,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 13:39:27,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211334293] [2021-11-19 13:39:27,960 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:27,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:39:27,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:27,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:39:27,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:39:27,962 INFO L87 Difference]: Start difference. First operand 581 states and 934 transitions. Second operand has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:28,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:28,173 INFO L93 Difference]: Finished difference Result 1149 states and 1856 transitions. [2021-11-19 13:39:28,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:39:28,175 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 72 [2021-11-19 13:39:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:28,181 INFO L225 Difference]: With dead ends: 1149 [2021-11-19 13:39:28,182 INFO L226 Difference]: Without dead ends: 581 [2021-11-19 13:39:28,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 131 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 13:39:28,188 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 76 mSDsluCounter, 6405 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:28,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 7322 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:39:28,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-11-19 13:39:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2021-11-19 13:39:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6118721461187215) internal successors, (706), 456 states have internal predecessors, (706), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-19 13:39:28,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 933 transitions. [2021-11-19 13:39:28,214 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 933 transitions. Word has length 72 [2021-11-19 13:39:28,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:28,215 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 933 transitions. [2021-11-19 13:39:28,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 933 transitions. [2021-11-19 13:39:28,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 13:39:28,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:28,217 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:28,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 13:39:28,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:28,435 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1641296429, now seen corresponding path program 1 times [2021-11-19 13:39:28,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:28,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579836823] [2021-11-19 13:39:28,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:28,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:28,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:28,438 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:28,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:39:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:28,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:39:28,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:28,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:29,368 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:29,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579836823] [2021-11-19 13:39:29,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579836823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:29,368 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:29,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 13:39:29,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132701569] [2021-11-19 13:39:29,369 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:29,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:39:29,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:29,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:39:29,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:39:29,371 INFO L87 Difference]: Start difference. First operand 581 states and 933 transitions. Second operand has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:29,566 INFO L93 Difference]: Finished difference Result 1149 states and 1854 transitions. [2021-11-19 13:39:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:39:29,567 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 73 [2021-11-19 13:39:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:29,573 INFO L225 Difference]: With dead ends: 1149 [2021-11-19 13:39:29,573 INFO L226 Difference]: Without dead ends: 581 [2021-11-19 13:39:29,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 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 13:39:29,578 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 35 mSDsluCounter, 8207 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 9124 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:29,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 9124 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:39:29,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-11-19 13:39:29,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2021-11-19 13:39:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6095890410958904) internal successors, (705), 456 states have internal predecessors, (705), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-19 13:39:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 932 transitions. [2021-11-19 13:39:29,601 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 932 transitions. Word has length 73 [2021-11-19 13:39:29,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:29,602 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 932 transitions. [2021-11-19 13:39:29,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:29,603 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 932 transitions. [2021-11-19 13:39:29,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 13:39:29,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:29,604 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:29,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:29,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:29,820 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:29,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1863235855, now seen corresponding path program 1 times [2021-11-19 13:39:29,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:29,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984832940] [2021-11-19 13:39:29,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:29,822 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:29,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:29,823 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:29,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:39:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:30,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:39:30,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:30,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:30,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:30,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984832940] [2021-11-19 13:39:30,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984832940] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:30,778 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:30,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 13:39:30,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466174902] [2021-11-19 13:39:30,778 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:30,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:39:30,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:30,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:39:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:39:30,780 INFO L87 Difference]: Start difference. First operand 581 states and 932 transitions. Second operand has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:30,922 INFO L93 Difference]: Finished difference Result 1149 states and 1852 transitions. [2021-11-19 13:39:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:39:30,924 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 74 [2021-11-19 13:39:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:30,929 INFO L225 Difference]: With dead ends: 1149 [2021-11-19 13:39:30,929 INFO L226 Difference]: Without dead ends: 581 [2021-11-19 13:39:30,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 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 13:39:30,934 INFO L933 BasicCegarLoop]: 917 mSDtfsCounter, 41 mSDsluCounter, 6376 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 7293 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:30,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 7293 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:39:30,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2021-11-19 13:39:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2021-11-19 13:39:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 438 states have (on average 1.6073059360730593) internal successors, (704), 456 states have internal predecessors, (704), 115 states have call successors, (115), 29 states have call predecessors, (115), 27 states have return successors, (112), 109 states have call predecessors, (112), 112 states have call successors, (112) [2021-11-19 13:39:30,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 931 transitions. [2021-11-19 13:39:30,957 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 931 transitions. Word has length 74 [2021-11-19 13:39:30,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:30,958 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 931 transitions. [2021-11-19 13:39:30,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:39:30,958 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 931 transitions. [2021-11-19 13:39:30,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:39:30,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:30,960 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:30,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:31,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:31,176 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:31,176 INFO L85 PathProgramCache]: Analyzing trace with hash 846962418, now seen corresponding path program 1 times [2021-11-19 13:39:31,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:31,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880304596] [2021-11-19 13:39:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:31,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:31,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:31,178 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:31,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:39:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:31,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:39:31,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:31,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:31,974 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:31,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880304596] [2021-11-19 13:39:31,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880304596] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:31,975 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:31,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-19 13:39:31,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901982569] [2021-11-19 13:39:31,975 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:31,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:39:31,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:31,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:39:31,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:39:31,976 INFO L87 Difference]: Start difference. First operand 581 states and 931 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 8 states have internal predecessors, (90), 6 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-19 13:39:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:34,816 INFO L93 Difference]: Finished difference Result 2281 states and 3742 transitions. [2021-11-19 13:39:34,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:39:34,817 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 8 states have internal predecessors, (90), 6 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) Word has length 75 [2021-11-19 13:39:34,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:34,833 INFO L225 Difference]: With dead ends: 2281 [2021-11-19 13:39:34,833 INFO L226 Difference]: Without dead ends: 1718 [2021-11-19 13:39:34,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:39:34,841 INFO L933 BasicCegarLoop]: 1229 mSDtfsCounter, 2012 mSDsluCounter, 6699 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 7928 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:34,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2037 Valid, 7928 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 13:39:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2021-11-19 13:39:34,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1700. [2021-11-19 13:39:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1293 states have (on average 1.5870069605568446) internal successors, (2052), 1347 states have internal predecessors, (2052), 327 states have call successors, (327), 81 states have call predecessors, (327), 79 states have return successors, (346), 313 states have call predecessors, (346), 322 states have call successors, (346) [2021-11-19 13:39:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2725 transitions. [2021-11-19 13:39:34,927 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2725 transitions. Word has length 75 [2021-11-19 13:39:34,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:34,928 INFO L470 AbstractCegarLoop]: Abstraction has 1700 states and 2725 transitions. [2021-11-19 13:39:34,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 8 states have internal predecessors, (90), 6 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2021-11-19 13:39:34,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2725 transitions. [2021-11-19 13:39:34,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-19 13:39:34,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:34,930 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:34,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:35,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:35,147 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:35,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:35,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2055109646, now seen corresponding path program 1 times [2021-11-19 13:39:35,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:35,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377500085] [2021-11-19 13:39:35,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:35,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:35,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:35,149 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:35,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:39:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:35,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:39:35,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:35,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:35,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:39:35,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:35,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377500085] [2021-11-19 13:39:35,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377500085] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:39:35,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:39:35,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-11-19 13:39:35,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782922092] [2021-11-19 13:39:35,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:35,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:39:35,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:39:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:39:35,895 INFO L87 Difference]: Start difference. First operand 1700 states and 2725 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 13:39:36,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:36,783 INFO L93 Difference]: Finished difference Result 4558 states and 7443 transitions. [2021-11-19 13:39:36,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:39:36,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2021-11-19 13:39:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:36,838 INFO L225 Difference]: With dead ends: 4558 [2021-11-19 13:39:36,840 INFO L226 Difference]: Without dead ends: 2876 [2021-11-19 13:39:36,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:39:36,854 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 897 mSDsluCounter, 3941 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 5125 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:36,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [902 Valid, 5125 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:39:36,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2021-11-19 13:39:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2858. [2021-11-19 13:39:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2180 states have (on average 1.5963302752293578) internal successors, (3480), 2268 states have internal predecessors, (3480), 540 states have call successors, (540), 132 states have call predecessors, (540), 137 states have return successors, (622), 528 states have call predecessors, (622), 533 states have call successors, (622) [2021-11-19 13:39:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 4642 transitions. [2021-11-19 13:39:37,002 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 4642 transitions. Word has length 75 [2021-11-19 13:39:37,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:37,003 INFO L470 AbstractCegarLoop]: Abstraction has 2858 states and 4642 transitions. [2021-11-19 13:39:37,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 13:39:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 4642 transitions. [2021-11-19 13:39:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 13:39:37,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:37,005 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:37,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:37,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:37,220 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:37,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash -822828035, now seen corresponding path program 1 times [2021-11-19 13:39:37,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:37,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259560179] [2021-11-19 13:39:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:37,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:37,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:37,222 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:37,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:39:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:37,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:39:37,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:37,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:38,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:38,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259560179] [2021-11-19 13:39:38,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259560179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:38,019 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:38,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-19 13:39:38,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671790205] [2021-11-19 13:39:38,019 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:38,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:39:38,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:38,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:39:38,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:39:38,021 INFO L87 Difference]: Start difference. First operand 2858 states and 4642 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-19 13:39:39,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:39,451 INFO L93 Difference]: Finished difference Result 8888 states and 15200 transitions. [2021-11-19 13:39:39,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:39:39,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 78 [2021-11-19 13:39:39,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:39,516 INFO L225 Difference]: With dead ends: 8888 [2021-11-19 13:39:39,516 INFO L226 Difference]: Without dead ends: 6048 [2021-11-19 13:39:39,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:39:39,541 INFO L933 BasicCegarLoop]: 1192 mSDtfsCounter, 1012 mSDsluCounter, 4120 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:39,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 5312 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:39:39,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6048 states. [2021-11-19 13:39:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6048 to 5654. [2021-11-19 13:39:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5654 states, 4314 states have (on average 1.5848400556328233) internal successors, (6837), 4485 states have internal predecessors, (6837), 1050 states have call successors, (1050), 261 states have call predecessors, (1050), 289 states have return successors, (1487), 1049 states have call predecessors, (1487), 1038 states have call successors, (1487) [2021-11-19 13:39:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 9374 transitions. [2021-11-19 13:39:39,988 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 9374 transitions. Word has length 78 [2021-11-19 13:39:39,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:39,988 INFO L470 AbstractCegarLoop]: Abstraction has 5654 states and 9374 transitions. [2021-11-19 13:39:39,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-19 13:39:39,990 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 9374 transitions. [2021-11-19 13:39:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 13:39:39,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:39,993 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:40,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:40,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:40,210 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:40,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:40,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1570138946, now seen corresponding path program 1 times [2021-11-19 13:39:40,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:40,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403695936] [2021-11-19 13:39:40,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:40,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:40,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:40,213 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:40,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:39:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:40,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:39:40,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:40,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-19 13:39:40,843 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:40,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403695936] [2021-11-19 13:39:40,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403695936] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:40,844 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:40,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:39:40,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888594067] [2021-11-19 13:39:40,844 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:40,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:39:40,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:39:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:39:40,846 INFO L87 Difference]: Start difference. First operand 5654 states and 9374 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:39:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:41,228 INFO L93 Difference]: Finished difference Result 11320 states and 19003 transitions. [2021-11-19 13:39:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:39:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2021-11-19 13:39:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:41,339 INFO L225 Difference]: With dead ends: 11320 [2021-11-19 13:39:41,340 INFO L226 Difference]: Without dead ends: 5684 [2021-11-19 13:39:41,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:39:41,371 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 19 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3596 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:41,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 3596 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:39:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5684 states. [2021-11-19 13:39:41,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5684 to 5674. [2021-11-19 13:39:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5674 states, 4329 states have (on average 1.5816585816585818) internal successors, (6847), 4500 states have internal predecessors, (6847), 1050 states have call successors, (1050), 271 states have call predecessors, (1050), 294 states have return successors, (1462), 1044 states have call predecessors, (1462), 1038 states have call successors, (1462) [2021-11-19 13:39:41,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5674 states to 5674 states and 9359 transitions. [2021-11-19 13:39:41,714 INFO L78 Accepts]: Start accepts. Automaton has 5674 states and 9359 transitions. Word has length 79 [2021-11-19 13:39:41,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:41,715 INFO L470 AbstractCegarLoop]: Abstraction has 5674 states and 9359 transitions. [2021-11-19 13:39:41,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-19 13:39:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5674 states and 9359 transitions. [2021-11-19 13:39:41,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-19 13:39:41,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:41,717 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:41,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:41,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:41,930 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash -754634727, now seen corresponding path program 1 times [2021-11-19 13:39:41,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:41,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499720631] [2021-11-19 13:39:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:41,931 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:41,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:41,933 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:41,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:39:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:42,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:39:42,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 13:39:42,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 13:39:42,724 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:42,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499720631] [2021-11-19 13:39:42,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499720631] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:42,724 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:42,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-19 13:39:42,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804891803] [2021-11-19 13:39:42,724 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:42,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:39:42,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:42,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:39:42,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:39:42,726 INFO L87 Difference]: Start difference. First operand 5674 states and 9359 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 13:39:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:44,573 INFO L93 Difference]: Finished difference Result 17823 states and 31675 transitions. [2021-11-19 13:39:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:39:44,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 87 [2021-11-19 13:39:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:44,722 INFO L225 Difference]: With dead ends: 17823 [2021-11-19 13:39:44,723 INFO L226 Difference]: Without dead ends: 12167 [2021-11-19 13:39:44,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:39:44,751 INFO L933 BasicCegarLoop]: 1197 mSDtfsCounter, 984 mSDsluCounter, 5033 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 6230 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:44,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 6230 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 13:39:44,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12167 states. [2021-11-19 13:39:45,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12167 to 11347. [2021-11-19 13:39:45,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11347 states, 8655 states have (on average 1.573887926054304) internal successors, (13622), 9000 states have internal predecessors, (13622), 2075 states have call successors, (2075), 539 states have call predecessors, (2075), 616 states have return successors, (3653), 2091 states have call predecessors, (3653), 2053 states have call successors, (3653) [2021-11-19 13:39:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11347 states to 11347 states and 19350 transitions. [2021-11-19 13:39:45,530 INFO L78 Accepts]: Start accepts. Automaton has 11347 states and 19350 transitions. Word has length 87 [2021-11-19 13:39:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:45,533 INFO L470 AbstractCegarLoop]: Abstraction has 11347 states and 19350 transitions. [2021-11-19 13:39:45,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-19 13:39:45,533 INFO L276 IsEmpty]: Start isEmpty. Operand 11347 states and 19350 transitions. [2021-11-19 13:39:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-19 13:39:45,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:45,535 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 13:39:45,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-19 13:39:45,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:45,751 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash -268847510, now seen corresponding path program 1 times [2021-11-19 13:39:45,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:45,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054885356] [2021-11-19 13:39:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:45,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:45,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:45,754 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:45,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 13:39:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:46,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:39:46,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 13:39:46,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 13:39:46,361 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:46,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054885356] [2021-11-19 13:39:46,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054885356] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:46,362 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:46,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:39:46,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267237654] [2021-11-19 13:39:46,362 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:46,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:39:46,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:46,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:39:46,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:39:46,363 INFO L87 Difference]: Start difference. First operand 11347 states and 19350 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 13:39:46,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:46,828 INFO L93 Difference]: Finished difference Result 22796 states and 39474 transitions. [2021-11-19 13:39:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:39:46,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 88 [2021-11-19 13:39:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:47,017 INFO L225 Difference]: With dead ends: 22796 [2021-11-19 13:39:47,017 INFO L226 Difference]: Without dead ends: 11467 [2021-11-19 13:39:47,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:39:47,079 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 21 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:47,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 3594 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:39:47,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11467 states. [2021-11-19 13:39:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11467 to 11447. [2021-11-19 13:39:47,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11447 states, 8745 states have (on average 1.5691252144082333) internal successors, (13722), 9070 states have internal predecessors, (13722), 2075 states have call successors, (2075), 579 states have call predecessors, (2075), 626 states have return successors, (3615), 2081 states have call predecessors, (3615), 2053 states have call successors, (3615) [2021-11-19 13:39:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11447 states to 11447 states and 19412 transitions. [2021-11-19 13:39:47,680 INFO L78 Accepts]: Start accepts. Automaton has 11447 states and 19412 transitions. Word has length 88 [2021-11-19 13:39:47,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:47,680 INFO L470 AbstractCegarLoop]: Abstraction has 11447 states and 19412 transitions. [2021-11-19 13:39:47,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-19 13:39:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 11447 states and 19412 transitions. [2021-11-19 13:39:47,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-19 13:39:47,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:47,683 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-19 13:39:47,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:47,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:47,887 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:47,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:47,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1198161924, now seen corresponding path program 1 times [2021-11-19 13:39:47,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:47,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041728232] [2021-11-19 13:39:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:47,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:47,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:47,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:47,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 13:39:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:48,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:39:48,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 13:39:48,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 13:39:48,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:48,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041728232] [2021-11-19 13:39:48,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041728232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:48,775 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:48,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-19 13:39:48,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581625149] [2021-11-19 13:39:48,776 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:48,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:39:48,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:39:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:39:48,778 INFO L87 Difference]: Start difference. First operand 11447 states and 19412 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 13:39:51,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:51,102 INFO L93 Difference]: Finished difference Result 35891 states and 67721 transitions. [2021-11-19 13:39:51,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:39:51,103 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 97 [2021-11-19 13:39:51,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:51,332 INFO L225 Difference]: With dead ends: 35891 [2021-11-19 13:39:51,333 INFO L226 Difference]: Without dead ends: 24462 [2021-11-19 13:39:51,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:39:51,415 INFO L933 BasicCegarLoop]: 1206 mSDtfsCounter, 961 mSDsluCounter, 5073 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 6279 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:51,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 6279 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 13:39:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24462 states. [2021-11-19 13:39:53,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24462 to 22978. [2021-11-19 13:39:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22978 states, 17547 states have (on average 1.56248931441272) internal successors, (27417), 18210 states have internal predecessors, (27417), 4130 states have call successors, (4130), 1155 states have call predecessors, (4130), 1300 states have return successors, (9364), 4180 states have call predecessors, (9364), 4088 states have call successors, (9364) [2021-11-19 13:39:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22978 states to 22978 states and 40911 transitions. [2021-11-19 13:39:53,416 INFO L78 Accepts]: Start accepts. Automaton has 22978 states and 40911 transitions. Word has length 97 [2021-11-19 13:39:53,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:53,416 INFO L470 AbstractCegarLoop]: Abstraction has 22978 states and 40911 transitions. [2021-11-19 13:39:53,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 6 states have internal predecessors, (104), 3 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-19 13:39:53,417 INFO L276 IsEmpty]: Start isEmpty. Operand 22978 states and 40911 transitions. [2021-11-19 13:39:53,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-19 13:39:53,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:53,418 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-19 13:39:53,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-19 13:39:53,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:53,632 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1945989841, now seen corresponding path program 1 times [2021-11-19 13:39:53,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:53,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627281151] [2021-11-19 13:39:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:53,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:53,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:53,634 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:53,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 13:39:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:53,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:39:53,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 13:39:54,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 13:39:54,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:54,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627281151] [2021-11-19 13:39:54,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627281151] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:54,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:54,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 13:39:54,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123254266] [2021-11-19 13:39:54,246 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:54,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:39:54,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:54,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:39:54,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:39:54,252 INFO L87 Difference]: Start difference. First operand 22978 states and 40911 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:39:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:55,379 INFO L93 Difference]: Finished difference Result 46178 states and 83982 transitions. [2021-11-19 13:39:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:39:55,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 98 [2021-11-19 13:39:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:55,722 INFO L225 Difference]: With dead ends: 46178 [2021-11-19 13:39:55,722 INFO L226 Difference]: Without dead ends: 23218 [2021-11-19 13:39:55,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:39:55,859 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 21 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:55,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 3594 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:39:55,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23218 states. [2021-11-19 13:39:57,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23218 to 23178. [2021-11-19 13:39:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23178 states, 17727 states have (on average 1.55790601906696) internal successors, (27617), 18390 states have internal predecessors, (27617), 4130 states have call successors, (4130), 1195 states have call predecessors, (4130), 1320 states have return successors, (9312), 4160 states have call predecessors, (9312), 4088 states have call successors, (9312) [2021-11-19 13:39:57,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23178 states to 23178 states and 41059 transitions. [2021-11-19 13:39:57,288 INFO L78 Accepts]: Start accepts. Automaton has 23178 states and 41059 transitions. Word has length 98 [2021-11-19 13:39:57,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:57,289 INFO L470 AbstractCegarLoop]: Abstraction has 23178 states and 41059 transitions. [2021-11-19 13:39:57,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:39:57,289 INFO L276 IsEmpty]: Start isEmpty. Operand 23178 states and 41059 transitions. [2021-11-19 13:39:57,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-19 13:39:57,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:57,291 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2021-11-19 13:39:57,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 13:39:57,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:39:57,508 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:39:57,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:57,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1156940538, now seen corresponding path program 1 times [2021-11-19 13:39:57,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:39:57,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208567826] [2021-11-19 13:39:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:57,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:39:57,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:39:57,510 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:39:57,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 13:39:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:57,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:39:57,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:58,191 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-19 13:39:58,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:39:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-19 13:39:58,474 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:39:58,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208567826] [2021-11-19 13:39:58,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208567826] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:58,475 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:58,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-19 13:39:58,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267397053] [2021-11-19 13:39:58,475 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:58,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:39:58,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:39:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:39:58,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:39:58,476 INFO L87 Difference]: Start difference. First operand 23178 states and 41059 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 13:40:01,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:01,704 INFO L93 Difference]: Finished difference Result 72429 states and 149435 transitions. [2021-11-19 13:40:01,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:40:01,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 108 [2021-11-19 13:40:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:02,467 INFO L225 Difference]: With dead ends: 72429 [2021-11-19 13:40:02,468 INFO L226 Difference]: Without dead ends: 49269 [2021-11-19 13:40:02,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:40:02,681 INFO L933 BasicCegarLoop]: 1190 mSDtfsCounter, 962 mSDsluCounter, 4162 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 5352 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:02,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 5352 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:40:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49269 states. [2021-11-19 13:40:05,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49269 to 46585. [2021-11-19 13:40:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46585 states, 35611 states have (on average 1.5522731740192637) internal successors, (55278), 36970 states have internal predecessors, (55278), 8245 states have call successors, (8245), 2387 states have call predecessors, (8245), 2728 states have return successors, (24973), 8363 states have call predecessors, (24973), 8163 states have call successors, (24973) [2021-11-19 13:40:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46585 states to 46585 states and 88496 transitions. [2021-11-19 13:40:06,713 INFO L78 Accepts]: Start accepts. Automaton has 46585 states and 88496 transitions. Word has length 108 [2021-11-19 13:40:06,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:06,714 INFO L470 AbstractCegarLoop]: Abstraction has 46585 states and 88496 transitions. [2021-11-19 13:40:06,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 13:40:06,714 INFO L276 IsEmpty]: Start isEmpty. Operand 46585 states and 88496 transitions. [2021-11-19 13:40:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 13:40:06,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:06,716 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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 13:40:06,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:06,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:06,935 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:06,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash -420388482, now seen corresponding path program 1 times [2021-11-19 13:40:06,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:06,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115191206] [2021-11-19 13:40:06,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:06,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:06,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:06,938 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:06,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 13:40:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:07,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:40:07,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 13:40:07,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-19 13:40:08,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:08,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115191206] [2021-11-19 13:40:08,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115191206] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:08,018 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:08,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2021-11-19 13:40:08,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745927646] [2021-11-19 13:40:08,019 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:08,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:40:08,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:08,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:40:08,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:40:08,020 INFO L87 Difference]: Start difference. First operand 46585 states and 88496 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 13:40:13,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:13,760 INFO L93 Difference]: Finished difference Result 141604 states and 270172 transitions. [2021-11-19 13:40:13,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 13:40:13,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 109 [2021-11-19 13:40:13,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:14,473 INFO L225 Difference]: With dead ends: 141604 [2021-11-19 13:40:14,473 INFO L226 Difference]: Without dead ends: 96166 [2021-11-19 13:40:15,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 13:40:15,082 INFO L933 BasicCegarLoop]: 1306 mSDtfsCounter, 2291 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:15,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2291 Valid, 2889 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:40:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96166 states. [2021-11-19 13:40:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96166 to 90733. [2021-11-19 13:40:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90733 states, 70226 states have (on average 1.5517044969099765) internal successors, (108970), 72142 states have internal predecessors, (108970), 15352 states have call successors, (15352), 4625 states have call predecessors, (15352), 5154 states have return successors, (49935), 15169 states have call predecessors, (49935), 15185 states have call successors, (49935) [2021-11-19 13:40:20,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90733 states to 90733 states and 174257 transitions. [2021-11-19 13:40:20,790 INFO L78 Accepts]: Start accepts. Automaton has 90733 states and 174257 transitions. Word has length 109 [2021-11-19 13:40:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:40:20,791 INFO L470 AbstractCegarLoop]: Abstraction has 90733 states and 174257 transitions. [2021-11-19 13:40:20,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 4 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-19 13:40:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 90733 states and 174257 transitions. [2021-11-19 13:40:20,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 13:40:20,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:40:20,796 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 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 13:40:20,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:40:21,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:40:21,012 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:40:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:40:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1081197664, now seen corresponding path program 1 times [2021-11-19 13:40:21,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:40:21,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249908703] [2021-11-19 13:40:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:40:21,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:40:21,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:40:21,014 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:40:21,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_827d4256-5f22-4ac5-88f5-89a4b119f91c/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:40:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:40:21,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:40:21,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:40:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-19 13:40:22,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-19 13:40:22,445 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:40:22,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249908703] [2021-11-19 13:40:22,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249908703] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:40:22,446 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:40:22,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2021-11-19 13:40:22,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261977515] [2021-11-19 13:40:22,446 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:40:22,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:40:22,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:40:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:40:22,447 INFO L87 Difference]: Start difference. First operand 90733 states and 174257 transitions. Second operand has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) [2021-11-19 13:40:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:29,610 INFO L93 Difference]: Finished difference Result 186222 states and 370819 transitions. [2021-11-19 13:40:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:40:29,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 163 [2021-11-19 13:40:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:30,255 INFO L225 Difference]: With dead ends: 186222 [2021-11-19 13:40:30,255 INFO L226 Difference]: Without dead ends: 95507 [2021-11-19 13:40:31,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:40:31,540 INFO L933 BasicCegarLoop]: 1041 mSDtfsCounter, 1196 mSDsluCounter, 3645 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1199 SdHoareTripleChecker+Valid, 4686 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:31,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1199 Valid, 4686 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:40:31,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95507 states.