./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.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_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/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_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/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_3257d57a-549d-4f13-8e31-e543bb553d54/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 b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:30:34,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:30:34,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:30:34,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:30:34,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:30:34,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:30:34,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:30:34,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:30:34,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:30:34,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:30:34,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:30:34,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:30:34,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:30:34,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:30:34,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:30:34,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:30:34,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:30:34,511 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:30:34,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:30:34,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:30:34,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:30:34,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:30:34,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:30:34,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:30:34,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:30:34,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:30:34,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:30:34,530 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:30:34,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:30:34,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:30:34,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:30:34,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:30:34,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:30:34,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:30:34,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:30:34,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:30:34,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:30:34,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:30:34,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:30:34,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:30:34,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:30:34,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:30:34,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:30:34,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:30:34,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:30:34,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:30:34,580 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:30:34,580 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:30:34,580 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:30:34,580 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:30:34,580 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:30:34,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:30:34,585 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:30:34,585 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:30:34,585 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:30:34,586 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:30:34,586 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:30:34,586 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:30:34,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:30:34,587 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:30:34,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:30:34,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:30:34,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:30:34,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:30:34,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:30:34,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:30:34,589 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:30:34,589 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:30:34,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:30:34,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:30:34,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:30:34,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:30:34,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:30:34,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:30:34,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:30:34,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:30:34,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:30:34,591 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:30:34,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:30:34,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:30:34,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:30:34,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:30:34,592 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_3257d57a-549d-4f13-8e31-e543bb553d54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d [2021-11-19 13:30:34,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:30:34,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:30:34,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:30:34,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:30:34,894 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:30:34,895 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2021-11-19 13:30:34,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/data/ecd27b586/214160bd4fbf4828bd37e76b820b9bfe/FLAG3f4b4d85d [2021-11-19 13:30:35,541 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:30:35,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2021-11-19 13:30:35,563 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/data/ecd27b586/214160bd4fbf4828bd37e76b820b9bfe/FLAG3f4b4d85d [2021-11-19 13:30:35,774 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/data/ecd27b586/214160bd4fbf4828bd37e76b820b9bfe [2021-11-19 13:30:35,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:30:35,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:30:35,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:30:35,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:30:35,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:30:35,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:30:35" (1/1) ... [2021-11-19 13:30:35,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783d64ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:35, skipping insertion in model container [2021-11-19 13:30:35,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:30:35" (1/1) ... [2021-11-19 13:30:35,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:30:35,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:30:36,172 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_3257d57a-549d-4f13-8e31-e543bb553d54/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2021-11-19 13:30:36,478 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:30:36,502 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 13:30:36,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7cc3a7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:36, skipping insertion in model container [2021-11-19 13:30:36,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:30:36,503 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:30:36,504 INFO L158 Benchmark]: Toolchain (without parser) took 725.66ms. Allocated memory is still 107.0MB. Free memory was 64.9MB in the beginning and 66.5MB in the end (delta: -1.6MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-11-19 13:30:36,505 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 107.0MB. Free memory was 83.9MB in the beginning and 83.8MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:30:36,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 721.22ms. Allocated memory is still 107.0MB. Free memory was 64.7MB in the beginning and 66.9MB in the end (delta: -2.1MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-11-19 13:30:36,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 107.0MB. Free memory was 83.9MB in the beginning and 83.8MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 721.22ms. Allocated memory is still 107.0MB. Free memory was 64.7MB in the beginning and 66.9MB in the end (delta: -2.1MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 3141]: 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_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/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_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/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_3257d57a-549d-4f13-8e31-e543bb553d54/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 b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:30:38,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:30:38,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:30:38,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:30:38,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:30:38,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:30:38,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:30:38,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:30:38,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:30:38,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:30:38,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:30:38,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:30:38,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:30:38,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:30:38,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:30:38,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:30:38,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:30:38,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:30:38,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:30:38,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:30:38,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:30:38,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:30:38,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:30:38,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:30:38,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:30:38,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:30:38,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:30:38,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:30:38,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:30:38,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:30:38,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:30:38,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:30:38,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:30:38,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:30:38,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:30:38,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:30:38,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:30:38,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:30:38,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:30:38,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:30:38,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:30:38,984 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 13:30:39,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:30:39,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:30:39,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:30:39,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:30:39,036 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:30:39,036 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:30:39,037 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:30:39,037 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:30:39,037 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:30:39,037 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:30:39,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:30:39,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:30:39,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:30:39,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:30:39,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:30:39,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:30:39,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:30:39,041 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:30:39,041 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:30:39,041 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:30:39,041 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:30:39,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:30:39,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:30:39,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:30:39,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:30:39,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:30:39,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:30:39,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:30:39,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:30:39,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:30:39,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:30:39,043 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:30:39,044 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:30:39,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:30:39,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:30:39,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:30:39,045 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_3257d57a-549d-4f13-8e31-e543bb553d54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d [2021-11-19 13:30:39,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:30:39,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:30:39,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:30:39,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:30:39,448 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:30:39,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2021-11-19 13:30:39,512 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/data/269184ff7/968123e48b0d43038e1402d38bca24ac/FLAG2bb5cf0fb [2021-11-19 13:30:40,194 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:30:40,199 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2021-11-19 13:30:40,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/data/269184ff7/968123e48b0d43038e1402d38bca24ac/FLAG2bb5cf0fb [2021-11-19 13:30:40,383 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/data/269184ff7/968123e48b0d43038e1402d38bca24ac [2021-11-19 13:30:40,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:30:40,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:30:40,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:30:40,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:30:40,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:30:40,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:30:40" (1/1) ... [2021-11-19 13:30:40,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf2ca79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:40, skipping insertion in model container [2021-11-19 13:30:40,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:30:40" (1/1) ... [2021-11-19 13:30:40,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:30:40,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:30:40,806 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_3257d57a-549d-4f13-8e31-e543bb553d54/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2021-11-19 13:30:41,137 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:30:41,154 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:30:41,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:30:41,213 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_3257d57a-549d-4f13-8e31-e543bb553d54/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2021-11-19 13:30:41,316 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:30:41,321 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:30:41,343 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_3257d57a-549d-4f13-8e31-e543bb553d54/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c[10611,10624] [2021-11-19 13:30:41,396 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:30:41,458 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:30:41,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41 WrapperNode [2021-11-19 13:30:41,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:30:41,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:30:41,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:30:41,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:30:41,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (1/1) ... [2021-11-19 13:30:41,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (1/1) ... [2021-11-19 13:30:41,608 INFO L137 Inliner]: procedures = 97, calls = 347, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 869 [2021-11-19 13:30:41,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:30:41,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:30:41,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:30:41,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:30:41,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (1/1) ... [2021-11-19 13:30:41,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (1/1) ... [2021-11-19 13:30:41,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (1/1) ... [2021-11-19 13:30:41,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (1/1) ... [2021-11-19 13:30:41,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (1/1) ... [2021-11-19 13:30:41,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (1/1) ... [2021-11-19 13:30:41,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (1/1) ... [2021-11-19 13:30:41,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:30:41,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:30:41,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:30:41,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:30:41,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (1/1) ... [2021-11-19 13:30:41,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:30:41,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:41,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:30:41,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:30:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:30:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-19 13:30:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-19 13:30:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-19 13:30:41,829 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-19 13:30:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-19 13:30:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-19 13:30:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-19 13:30:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-19 13:30:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-19 13:30:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-19 13:30:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-11-19 13:30:41,830 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-11-19 13:30:41,830 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-19 13:30:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-19 13:30:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-19 13:30:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-19 13:30:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-19 13:30:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-19 13:30:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-19 13:30:41,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-19 13:30:41,831 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-19 13:30:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-19 13:30:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-19 13:30:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-19 13:30:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-19 13:30:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-19 13:30:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:30:41,832 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-19 13:30:41,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-19 13:30:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-19 13:30:41,833 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-19 13:30:41,833 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-19 13:30:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-19 13:30:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-19 13:30:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-19 13:30:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-19 13:30:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-19 13:30:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-19 13:30:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-19 13:30:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-19 13:30:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-19 13:30:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-19 13:30:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-19 13:30:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-19 13:30:41,835 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-19 13:30:41,835 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-19 13:30:41,836 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-19 13:30:41,836 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2021-11-19 13:30:41,837 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2021-11-19 13:30:41,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:30:41,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:30:41,839 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-19 13:30:41,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-19 13:30:42,042 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:30:42,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:30:43,369 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:30:43,383 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:30:43,384 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:30:43,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:30:43 BoogieIcfgContainer [2021-11-19 13:30:43,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:30:43,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:30:43,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:30:43,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:30:43,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:30:40" (1/3) ... [2021-11-19 13:30:43,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fafcc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:30:43, skipping insertion in model container [2021-11-19 13:30:43,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:41" (2/3) ... [2021-11-19 13:30:43,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fafcc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:30:43, skipping insertion in model container [2021-11-19 13:30:43,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:30:43" (3/3) ... [2021-11-19 13:30:43,395 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product30.cil.c [2021-11-19 13:30:43,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:30:43,401 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:30:43,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:30:43,462 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 13:30:43,465 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:30:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 581 states, 456 states have (on average 1.6929824561403508) internal successors, (772), 479 states have internal predecessors, (772), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2021-11-19 13:30:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-19 13:30:43,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:43,549 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:43,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:30:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:43,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1129781487, now seen corresponding path program 1 times [2021-11-19 13:30:43,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:43,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078838167] [2021-11-19 13:30:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:43,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:43,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:43,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:43,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:30:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:44,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:30:44,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:44,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:44,323 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:44,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078838167] [2021-11-19 13:30:44,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078838167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:44,325 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:44,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:30:44,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782984948] [2021-11-19 13:30:44,328 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:44,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:30:44,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:30:44,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:30:44,375 INFO L87 Difference]: Start difference. First operand has 581 states, 456 states have (on average 1.6929824561403508) internal successors, (772), 479 states have internal predecessors, (772), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 13:30:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:44,488 INFO L93 Difference]: Finished difference Result 602 states and 998 transitions. [2021-11-19 13:30:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:30:44,495 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2021-11-19 13:30:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:44,525 INFO L225 Difference]: With dead ends: 602 [2021-11-19 13:30:44,525 INFO L226 Difference]: Without dead ends: 573 [2021-11-19 13:30:44,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:30:44,540 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:44,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:30:44,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-19 13:30:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2021-11-19 13:30:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.691111111111111) internal successors, (761), 471 states have internal predecessors, (761), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-19 13:30:44,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 952 transitions. [2021-11-19 13:30:44,656 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 952 transitions. Word has length 60 [2021-11-19 13:30:44,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:44,658 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 952 transitions. [2021-11-19 13:30:44,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 13:30:44,659 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 952 transitions. [2021-11-19 13:30:44,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 13:30:44,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:44,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:44,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 13:30:44,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:44,890 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:30:44,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash 861104163, now seen corresponding path program 1 times [2021-11-19 13:30:44,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:44,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356517399] [2021-11-19 13:30:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:44,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:44,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:44,898 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:44,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:30:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:45,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:30:45,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:45,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:45,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:45,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356517399] [2021-11-19 13:30:45,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356517399] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:45,603 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:45,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:30:45,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272211475] [2021-11-19 13:30:45,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:45,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:30:45,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:30:45,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:30:45,612 INFO L87 Difference]: Start difference. First operand 573 states and 952 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 13:30:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:45,802 INFO L93 Difference]: Finished difference Result 1130 states and 1882 transitions. [2021-11-19 13:30:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:30:45,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 62 [2021-11-19 13:30:45,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:45,813 INFO L225 Difference]: With dead ends: 1130 [2021-11-19 13:30:45,813 INFO L226 Difference]: Without dead ends: 573 [2021-11-19 13:30:45,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:30:45,824 INFO L933 BasicCegarLoop]: 939 mSDtfsCounter, 15 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:45,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2813 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:30:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-19 13:30:45,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2021-11-19 13:30:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6777777777777778) internal successors, (755), 471 states have internal predecessors, (755), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-19 13:30:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 946 transitions. [2021-11-19 13:30:45,897 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 946 transitions. Word has length 62 [2021-11-19 13:30:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:45,898 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 946 transitions. [2021-11-19 13:30:45,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-19 13:30:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 946 transitions. [2021-11-19 13:30:45,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 13:30:45,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:45,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:45,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:46,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:46,131 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:30:46,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash 120137632, now seen corresponding path program 1 times [2021-11-19 13:30:46,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:46,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642833862] [2021-11-19 13:30:46,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:46,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:46,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:46,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:46,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:30:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:46,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:30:46,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:46,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:47,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:47,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642833862] [2021-11-19 13:30:47,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642833862] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:47,058 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:47,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-19 13:30:47,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264202476] [2021-11-19 13:30:47,058 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:47,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:30:47,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:47,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:30:47,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:30:47,060 INFO L87 Difference]: Start difference. First operand 573 states and 946 transitions. Second operand has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:30:47,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:47,237 INFO L93 Difference]: Finished difference Result 1088 states and 1799 transitions. [2021-11-19 13:30:47,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:30:47,239 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (13), 2 states have call predecessors, (13), 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 13:30:47,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:47,247 INFO L225 Difference]: With dead ends: 1088 [2021-11-19 13:30:47,247 INFO L226 Difference]: Without dead ends: 567 [2021-11-19 13:30:47,251 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 13:30:47,255 INFO L933 BasicCegarLoop]: 933 mSDtfsCounter, 194 mSDsluCounter, 4572 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 5505 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:47,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 5505 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:47,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-19 13:30:47,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2021-11-19 13:30:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 444 states have (on average 1.6711711711711712) internal successors, (742), 465 states have internal predecessors, (742), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-19 13:30:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 933 transitions. [2021-11-19 13:30:47,305 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 933 transitions. Word has length 67 [2021-11-19 13:30:47,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:47,307 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 933 transitions. [2021-11-19 13:30:47,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:30:47,308 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 933 transitions. [2021-11-19 13:30:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 13:30:47,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:47,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:47,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:47,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:47,535 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:30:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 331338868, now seen corresponding path program 1 times [2021-11-19 13:30:47,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:47,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704378408] [2021-11-19 13:30:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:47,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:47,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:47,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:47,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:30:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:47,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:30:47,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:48,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:48,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:48,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:48,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704378408] [2021-11-19 13:30:48,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704378408] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:48,273 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:48,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:30:48,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431029923] [2021-11-19 13:30:48,274 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:48,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:30:48,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:48,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:30:48,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:30:48,276 INFO L87 Difference]: Start difference. First operand 567 states and 933 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:30:48,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:48,471 INFO L93 Difference]: Finished difference Result 1091 states and 1800 transitions. [2021-11-19 13:30:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:30:48,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 68 [2021-11-19 13:30:48,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:48,477 INFO L225 Difference]: With dead ends: 1091 [2021-11-19 13:30:48,478 INFO L226 Difference]: Without dead ends: 567 [2021-11-19 13:30:48,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:30:48,482 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 165 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 3508 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:48,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 3508 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:48,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-11-19 13:30:48,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2021-11-19 13:30:48,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 444 states have (on average 1.617117117117117) internal successors, (718), 465 states have internal predecessors, (718), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-19 13:30:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 909 transitions. [2021-11-19 13:30:48,516 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 909 transitions. Word has length 68 [2021-11-19 13:30:48,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:48,516 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 909 transitions. [2021-11-19 13:30:48,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-19 13:30:48,517 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 909 transitions. [2021-11-19 13:30:48,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 13:30:48,520 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:48,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:48,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:48,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:48,736 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:30:48,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:48,736 INFO L85 PathProgramCache]: Analyzing trace with hash -90463079, now seen corresponding path program 1 times [2021-11-19 13:30:48,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:48,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805597133] [2021-11-19 13:30:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:48,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:48,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:48,740 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:48,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:30:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:49,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:30:49,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:49,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:49,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:49,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:49,503 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:49,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805597133] [2021-11-19 13:30:49,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805597133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:49,503 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:49,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-19 13:30:49,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72160756] [2021-11-19 13:30:49,504 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:49,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:30:49,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:49,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:30:49,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:30:49,505 INFO L87 Difference]: Start difference. First operand 567 states and 909 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 13:30:49,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:49,651 INFO L93 Difference]: Finished difference Result 1082 states and 1762 transitions. [2021-11-19 13:30:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:30:49,652 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (12), 2 states have call predecessors, (12), 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 13:30:49,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:49,658 INFO L225 Difference]: With dead ends: 1082 [2021-11-19 13:30:49,658 INFO L226 Difference]: Without dead ends: 546 [2021-11-19 13:30:49,661 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 13:30:49,662 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 89 mSDsluCounter, 5281 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 6178 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:30:49,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 6178 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:49,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-19 13:30:49,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2021-11-19 13:30:49,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 423 states have (on average 1.6382978723404256) internal successors, (693), 444 states have internal predecessors, (693), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-19 13:30:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 884 transitions. [2021-11-19 13:30:49,690 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 884 transitions. Word has length 70 [2021-11-19 13:30:49,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:49,691 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 884 transitions. [2021-11-19 13:30:49,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-19 13:30:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 884 transitions. [2021-11-19 13:30:49,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-19 13:30:49,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:49,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:49,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:49,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:49,909 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:30:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1141777357, now seen corresponding path program 1 times [2021-11-19 13:30:49,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:49,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55872678] [2021-11-19 13:30:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:49,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:49,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:49,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:49,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:30:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:50,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:30:50,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:50,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:50,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:50,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55872678] [2021-11-19 13:30:50,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55872678] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:50,861 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:50,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 13:30:50,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994036507] [2021-11-19 13:30:50,861 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:50,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:30:50,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:50,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:30:50,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:30:50,863 INFO L87 Difference]: Start difference. First operand 546 states and 884 transitions. Second operand has 13 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:30:51,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:30:51,054 INFO L93 Difference]: Finished difference Result 1055 states and 1726 transitions. [2021-11-19 13:30:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:30:51,055 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 4 states have call successors, (13), 2 states have call predecessors, (13), 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 13:30:51,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:30:51,068 INFO L225 Difference]: With dead ends: 1055 [2021-11-19 13:30:51,068 INFO L226 Difference]: Without dead ends: 546 [2021-11-19 13:30:51,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:30:51,076 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 31 mSDsluCounter, 6058 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 6927 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 13:30:51,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 6927 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:30:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-19 13:30:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2021-11-19 13:30:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 423 states have (on average 1.635933806146572) internal successors, (692), 444 states have internal predecessors, (692), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-19 13:30:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 883 transitions. [2021-11-19 13:30:51,106 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 883 transitions. Word has length 73 [2021-11-19 13:30:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:30:51,107 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 883 transitions. [2021-11-19 13:30:51,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-19 13:30:51,107 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 883 transitions. [2021-11-19 13:30:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 13:30:51,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:30:51,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:30:51,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:30:51,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:30:51,326 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:30:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:30:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1473566669, now seen corresponding path program 1 times [2021-11-19 13:30:51,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:30:51,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533001249] [2021-11-19 13:30:51,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:30:51,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:30:51,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:30:51,329 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:30:51,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:30:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:30:51,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 13:30:51,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:30:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:52,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:30:52,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:30:52,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:30:52,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533001249] [2021-11-19 13:30:52,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533001249] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:30:52,691 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:30:52,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2021-11-19 13:30:52,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751270588] [2021-11-19 13:30:52,691 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:30:52,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:30:52,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:30:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:30:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:30:52,693 INFO L87 Difference]: Start difference. First operand 546 states and 883 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 8 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-19 13:31:01,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:01,962 INFO L93 Difference]: Finished difference Result 2750 states and 4582 transitions. [2021-11-19 13:31:01,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:31:01,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 8 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 74 [2021-11-19 13:31:01,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:01,993 INFO L225 Difference]: With dead ends: 2750 [2021-11-19 13:31:01,994 INFO L226 Difference]: Without dead ends: 2249 [2021-11-19 13:31:01,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:31:01,999 INFO L933 BasicCegarLoop]: 1579 mSDtfsCounter, 5125 mSDsluCounter, 2158 mSDsCounter, 0 mSdLazyCounter, 5533 mSolverCounterSat, 1315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5307 SdHoareTripleChecker+Valid, 3737 SdHoareTripleChecker+Invalid, 6848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1315 IncrementalHoareTripleChecker+Valid, 5533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:02,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5307 Valid, 3737 Invalid, 6848 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1315 Valid, 5533 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2021-11-19 13:31:02,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2021-11-19 13:31:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 2061. [2021-11-19 13:31:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 1588 states have (on average 1.6681360201511335) internal successors, (2649), 1653 states have internal predecessors, (2649), 391 states have call successors, (391), 78 states have call predecessors, (391), 81 states have return successors, (399), 356 states have call predecessors, (399), 386 states have call successors, (399) [2021-11-19 13:31:02,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3439 transitions. [2021-11-19 13:31:02,160 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3439 transitions. Word has length 74 [2021-11-19 13:31:02,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:02,161 INFO L470 AbstractCegarLoop]: Abstraction has 2061 states and 3439 transitions. [2021-11-19 13:31:02,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 8 states have call successors, (15), 7 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-19 13:31:02,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3439 transitions. [2021-11-19 13:31:02,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:31:02,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:02,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:02,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:02,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:02,389 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:31:02,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:02,390 INFO L85 PathProgramCache]: Analyzing trace with hash -106358317, now seen corresponding path program 1 times [2021-11-19 13:31:02,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:02,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677123690] [2021-11-19 13:31:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:02,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:02,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:02,393 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:02,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:31:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:02,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:31:02,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:03,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:04,245 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:04,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677123690] [2021-11-19 13:31:04,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677123690] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:04,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:04,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-19 13:31:04,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133563610] [2021-11-19 13:31:04,246 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:04,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:31:04,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:04,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:31:04,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:31:04,248 INFO L87 Difference]: Start difference. First operand 2061 states and 3439 transitions. Second operand has 14 states, 14 states have (on average 11.0) internal successors, (154), 12 states have internal predecessors, (154), 8 states have call successors, (25), 5 states have call predecessors, (25), 8 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-19 13:31:08,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:08,415 INFO L93 Difference]: Finished difference Result 4614 states and 7830 transitions. [2021-11-19 13:31:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:31:08,416 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 12 states have internal predecessors, (154), 8 states have call successors, (25), 5 states have call predecessors, (25), 8 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) Word has length 113 [2021-11-19 13:31:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:08,446 INFO L225 Difference]: With dead ends: 4614 [2021-11-19 13:31:08,446 INFO L226 Difference]: Without dead ends: 2598 [2021-11-19 13:31:08,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:31:08,467 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 2178 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 4321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:08,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2178 Valid, 2767 Invalid, 4321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 3514 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 13:31:08,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2598 states. [2021-11-19 13:31:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2598 to 2077. [2021-11-19 13:31:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 1600 states have (on average 1.663125) internal successors, (2661), 1665 states have internal predecessors, (2661), 391 states have call successors, (391), 78 states have call predecessors, (391), 85 states have return successors, (463), 360 states have call predecessors, (463), 386 states have call successors, (463) [2021-11-19 13:31:08,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 3515 transitions. [2021-11-19 13:31:08,671 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 3515 transitions. Word has length 113 [2021-11-19 13:31:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:08,672 INFO L470 AbstractCegarLoop]: Abstraction has 2077 states and 3515 transitions. [2021-11-19 13:31:08,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.0) internal successors, (154), 12 states have internal predecessors, (154), 8 states have call successors, (25), 5 states have call predecessors, (25), 8 states have return successors, (24), 10 states have call predecessors, (24), 7 states have call successors, (24) [2021-11-19 13:31:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 3515 transitions. [2021-11-19 13:31:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:31:08,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:08,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:08,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:08,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:08,900 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:31:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:08,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2000084104, now seen corresponding path program 1 times [2021-11-19 13:31:08,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:08,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133902316] [2021-11-19 13:31:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:08,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:08,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:08,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:08,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:31:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:09,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:31:09,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:09,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:10,152 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:10,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133902316] [2021-11-19 13:31:10,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133902316] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:10,152 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:10,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-19 13:31:10,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418559282] [2021-11-19 13:31:10,153 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:10,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:31:10,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:10,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:31:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:31:10,154 INFO L87 Difference]: Start difference. First operand 2077 states and 3515 transitions. Second operand has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 11 states have internal predecessors, (127), 7 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2021-11-19 13:31:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:17,138 INFO L93 Difference]: Finished difference Result 5505 states and 9378 transitions. [2021-11-19 13:31:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 13:31:17,140 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 11 states have internal predecessors, (127), 7 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 113 [2021-11-19 13:31:17,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:17,175 INFO L225 Difference]: With dead ends: 5505 [2021-11-19 13:31:17,175 INFO L226 Difference]: Without dead ends: 3473 [2021-11-19 13:31:17,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2021-11-19 13:31:17,193 INFO L933 BasicCegarLoop]: 1819 mSDtfsCounter, 4159 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 5669 mSolverCounterSat, 1561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4249 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 7230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1561 IncrementalHoareTripleChecker+Valid, 5669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:17,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4249 Valid, 4488 Invalid, 7230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1561 Valid, 5669 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-19 13:31:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2021-11-19 13:31:17,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 2993. [2021-11-19 13:31:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2993 states, 2248 states have (on average 1.6236654804270463) internal successors, (3650), 2339 states have internal predecessors, (3650), 613 states have call successors, (613), 109 states have call predecessors, (613), 131 states have return successors, (715), 577 states have call predecessors, (715), 608 states have call successors, (715) [2021-11-19 13:31:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2993 states to 2993 states and 4978 transitions. [2021-11-19 13:31:17,498 INFO L78 Accepts]: Start accepts. Automaton has 2993 states and 4978 transitions. Word has length 113 [2021-11-19 13:31:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:17,499 INFO L470 AbstractCegarLoop]: Abstraction has 2993 states and 4978 transitions. [2021-11-19 13:31:17,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 11 states have internal predecessors, (127), 7 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2021-11-19 13:31:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2993 states and 4978 transitions. [2021-11-19 13:31:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 13:31:17,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:17,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:17,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:17,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:17,726 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:31:17,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:17,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1355446495, now seen corresponding path program 1 times [2021-11-19 13:31:17,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:17,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384432817] [2021-11-19 13:31:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:17,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:17,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:17,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:17,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:31:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:18,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:31:18,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:18,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:18,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:18,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:18,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384432817] [2021-11-19 13:31:18,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384432817] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:18,954 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:18,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-19 13:31:18,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675971089] [2021-11-19 13:31:18,954 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:18,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:31:18,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:18,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:31:18,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:18,956 INFO L87 Difference]: Start difference. First operand 2993 states and 4978 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 6 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2021-11-19 13:31:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:24,082 INFO L93 Difference]: Finished difference Result 9863 states and 16862 transitions. [2021-11-19 13:31:24,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-19 13:31:24,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 6 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 114 [2021-11-19 13:31:24,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:24,154 INFO L225 Difference]: With dead ends: 9863 [2021-11-19 13:31:24,154 INFO L226 Difference]: Without dead ends: 6915 [2021-11-19 13:31:24,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:31:24,188 INFO L933 BasicCegarLoop]: 1476 mSDtfsCounter, 5180 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 1451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5265 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 5168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1451 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:24,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5265 Valid, 2991 Invalid, 5168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1451 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-11-19 13:31:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6915 states. [2021-11-19 13:31:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6915 to 6573. [2021-11-19 13:31:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6573 states, 4950 states have (on average 1.6183838383838385) internal successors, (8011), 5168 states have internal predecessors, (8011), 1317 states have call successors, (1317), 269 states have call predecessors, (1317), 305 states have return successors, (1527), 1212 states have call predecessors, (1527), 1312 states have call successors, (1527) [2021-11-19 13:31:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6573 states to 6573 states and 10855 transitions. [2021-11-19 13:31:24,765 INFO L78 Accepts]: Start accepts. Automaton has 6573 states and 10855 transitions. Word has length 114 [2021-11-19 13:31:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:24,766 INFO L470 AbstractCegarLoop]: Abstraction has 6573 states and 10855 transitions. [2021-11-19 13:31:24,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 6 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2021-11-19 13:31:24,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6573 states and 10855 transitions. [2021-11-19 13:31:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 13:31:24,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:24,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:24,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:24,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:24,993 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:31:24,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:24,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1245771409, now seen corresponding path program 1 times [2021-11-19 13:31:24,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:24,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149120990] [2021-11-19 13:31:24,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:24,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:24,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:24,996 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:25,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:31:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:25,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 13:31:25,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:27,384 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 13:31:27,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:32,397 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 13:31:32,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:32,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149120990] [2021-11-19 13:31:32,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149120990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:32,397 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:32,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2021-11-19 13:31:32,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472131502] [2021-11-19 13:31:32,398 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:32,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:31:32,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:32,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:31:32,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:31:32,399 INFO L87 Difference]: Start difference. First operand 6573 states and 10855 transitions. Second operand has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 9 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (26), 9 states have call predecessors, (26), 8 states have call successors, (26) [2021-11-19 13:31:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:40,627 INFO L93 Difference]: Finished difference Result 16389 states and 27241 transitions. [2021-11-19 13:31:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:31:40,636 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 9 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (26), 9 states have call predecessors, (26), 8 states have call successors, (26) Word has length 116 [2021-11-19 13:31:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:40,726 INFO L225 Difference]: With dead ends: 16389 [2021-11-19 13:31:40,727 INFO L226 Difference]: Without dead ends: 9861 [2021-11-19 13:31:40,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 220 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:31:40,773 INFO L933 BasicCegarLoop]: 1579 mSDtfsCounter, 6650 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 4532 mSolverCounterSat, 1882 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6728 SdHoareTripleChecker+Valid, 3593 SdHoareTripleChecker+Invalid, 6414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1882 IncrementalHoareTripleChecker+Valid, 4532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:40,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6728 Valid, 3593 Invalid, 6414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1882 Valid, 4532 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-19 13:31:40,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9861 states. [2021-11-19 13:31:41,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9861 to 9299. [2021-11-19 13:31:41,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9299 states, 6928 states have (on average 1.611864896073903) internal successors, (11167), 7260 states have internal predecessors, (11167), 1942 states have call successors, (1942), 378 states have call predecessors, (1942), 428 states have return successors, (2248), 1781 states have call predecessors, (2248), 1937 states have call successors, (2248) [2021-11-19 13:31:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9299 states to 9299 states and 15357 transitions. [2021-11-19 13:31:41,618 INFO L78 Accepts]: Start accepts. Automaton has 9299 states and 15357 transitions. Word has length 116 [2021-11-19 13:31:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:41,619 INFO L470 AbstractCegarLoop]: Abstraction has 9299 states and 15357 transitions. [2021-11-19 13:31:41,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.25) internal successors, (171), 12 states have internal predecessors, (171), 9 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (26), 9 states have call predecessors, (26), 8 states have call successors, (26) [2021-11-19 13:31:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 9299 states and 15357 transitions. [2021-11-19 13:31:41,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:31:41,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:41,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:41,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:41,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:41,848 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:31:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:41,849 INFO L85 PathProgramCache]: Analyzing trace with hash -919238983, now seen corresponding path program 1 times [2021-11-19 13:31:41,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:41,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66001143] [2021-11-19 13:31:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:41,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:41,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:41,851 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:41,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:31:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:42,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 13:31:42,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:42,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:43,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:43,337 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:43,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66001143] [2021-11-19 13:31:43,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66001143] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:43,337 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:43,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-19 13:31:43,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187805048] [2021-11-19 13:31:43,337 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:43,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:31:43,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:31:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:31:43,339 INFO L87 Difference]: Start difference. First operand 9299 states and 15357 transitions. Second operand has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 12 states have internal predecessors, (169), 8 states have call successors, (27), 6 states have call predecessors, (27), 7 states have return successors, (26), 10 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-19 13:31:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:53,648 INFO L93 Difference]: Finished difference Result 32531 states and 55553 transitions. [2021-11-19 13:31:53,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:31:53,650 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 12 states have internal predecessors, (169), 8 states have call successors, (27), 6 states have call predecessors, (27), 7 states have return successors, (26), 10 states have call predecessors, (26), 7 states have call successors, (26) Word has length 120 [2021-11-19 13:31:53,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:53,829 INFO L225 Difference]: With dead ends: 32531 [2021-11-19 13:31:53,830 INFO L226 Difference]: Without dead ends: 23235 [2021-11-19 13:31:53,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2021-11-19 13:31:53,897 INFO L933 BasicCegarLoop]: 1835 mSDtfsCounter, 6760 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 7865 mSolverCounterSat, 2932 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6862 SdHoareTripleChecker+Valid, 5137 SdHoareTripleChecker+Invalid, 10797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2932 IncrementalHoareTripleChecker+Valid, 7865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:53,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6862 Valid, 5137 Invalid, 10797 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2932 Valid, 7865 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-11-19 13:31:53,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23235 states. [2021-11-19 13:31:55,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23235 to 18378. [2021-11-19 13:31:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18378 states, 13218 states have (on average 1.5915418368890906) internal successors, (21037), 14012 states have internal predecessors, (21037), 4345 states have call successors, (4345), 636 states have call predecessors, (4345), 814 states have return successors, (5239), 4147 states have call predecessors, (5239), 4340 states have call successors, (5239) [2021-11-19 13:31:55,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18378 states to 18378 states and 30621 transitions. [2021-11-19 13:31:55,634 INFO L78 Accepts]: Start accepts. Automaton has 18378 states and 30621 transitions. Word has length 120 [2021-11-19 13:31:55,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:55,635 INFO L470 AbstractCegarLoop]: Abstraction has 18378 states and 30621 transitions. [2021-11-19 13:31:55,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 12 states have internal predecessors, (169), 8 states have call successors, (27), 6 states have call predecessors, (27), 7 states have return successors, (26), 10 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-19 13:31:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 18378 states and 30621 transitions. [2021-11-19 13:31:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 13:31:55,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:55,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:31:55,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:31:55,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:31:55,861 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:31:55,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:55,862 INFO L85 PathProgramCache]: Analyzing trace with hash -767687049, now seen corresponding path program 1 times [2021-11-19 13:31:55,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:31:55,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077881521] [2021-11-19 13:31:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:55,863 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:31:55,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:31:55,864 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:31:55,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:31:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:56,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:31:56,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:31:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:56,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:31:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:57,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:31:57,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077881521] [2021-11-19 13:31:57,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077881521] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:57,495 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:57,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 13:31:57,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970407478] [2021-11-19 13:31:57,496 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:57,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:57,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:31:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:57,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:57,498 INFO L87 Difference]: Start difference. First operand 18378 states and 30621 transitions. Second operand has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 8 states have call successors, (27), 6 states have call predecessors, (27), 5 states have return successors, (26), 8 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-19 13:32:04,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:04,280 INFO L93 Difference]: Finished difference Result 64242 states and 110246 transitions. [2021-11-19 13:32:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:32:04,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 8 states have call successors, (27), 6 states have call predecessors, (27), 5 states have return successors, (26), 8 states have call predecessors, (26), 7 states have call successors, (26) Word has length 121 [2021-11-19 13:32:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:04,927 INFO L225 Difference]: With dead ends: 64242 [2021-11-19 13:32:04,927 INFO L226 Difference]: Without dead ends: 45912 [2021-11-19 13:32:05,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:32:05,034 INFO L933 BasicCegarLoop]: 1767 mSDtfsCounter, 4190 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 1363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 4019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1363 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:05,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4291 Valid, 3072 Invalid, 4019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1363 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 13:32:05,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45912 states. [2021-11-19 13:32:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45912 to 42179. [2021-11-19 13:32:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42179 states, 29097 states have (on average 1.5766917551637627) internal successors, (45877), 31151 states have internal predecessors, (45877), 11376 states have call successors, (11376), 1160 states have call predecessors, (11376), 1705 states have return successors, (14272), 11198 states have call predecessors, (14272), 11371 states have call successors, (14272) [2021-11-19 13:32:09,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42179 states to 42179 states and 71525 transitions. [2021-11-19 13:32:09,399 INFO L78 Accepts]: Start accepts. Automaton has 42179 states and 71525 transitions. Word has length 121 [2021-11-19 13:32:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:09,399 INFO L470 AbstractCegarLoop]: Abstraction has 42179 states and 71525 transitions. [2021-11-19 13:32:09,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 8 states have call successors, (27), 6 states have call predecessors, (27), 5 states have return successors, (26), 8 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-19 13:32:09,400 INFO L276 IsEmpty]: Start isEmpty. Operand 42179 states and 71525 transitions. [2021-11-19 13:32:09,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 13:32:09,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:09,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:09,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:32:09,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:32:09,623 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:32:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash -486567108, now seen corresponding path program 1 times [2021-11-19 13:32:09,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:32:09,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398700962] [2021-11-19 13:32:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:09,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:32:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:32:09,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:32:09,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:32:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:09,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:32:09,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:10,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:11,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:11,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:32:11,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398700962] [2021-11-19 13:32:11,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398700962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:11,001 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:11,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 13:32:11,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696087321] [2021-11-19 13:32:11,002 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:11,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:11,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:32:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:11,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:11,004 INFO L87 Difference]: Start difference. First operand 42179 states and 71525 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 8 states have call successors, (27), 6 states have call predecessors, (27), 5 states have return successors, (26), 8 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-19 13:32:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:24,433 INFO L93 Difference]: Finished difference Result 163876 states and 287003 transitions. [2021-11-19 13:32:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:32:24,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 8 states have call successors, (27), 6 states have call predecessors, (27), 5 states have return successors, (26), 8 states have call predecessors, (26), 7 states have call successors, (26) Word has length 122 [2021-11-19 13:32:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:25,495 INFO L225 Difference]: With dead ends: 163876 [2021-11-19 13:32:25,495 INFO L226 Difference]: Without dead ends: 121747 [2021-11-19 13:32:25,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:32:25,946 INFO L933 BasicCegarLoop]: 1775 mSDtfsCounter, 3560 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 1162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 3828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1162 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:25,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3662 Valid, 3128 Invalid, 3828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1162 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 13:32:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121747 states. [2021-11-19 13:32:35,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121747 to 110433. [2021-11-19 13:32:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110433 states, 73030 states have (on average 1.566041352868684) internal successors, (114368), 78773 states have internal predecessors, (114368), 33407 states have call successors, (33407), 2208 states have call predecessors, (33407), 3995 states have return successors, (43957), 33741 states have call predecessors, (43957), 33402 states have call successors, (43957) [2021-11-19 13:32:36,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110433 states to 110433 states and 191732 transitions. [2021-11-19 13:32:36,759 INFO L78 Accepts]: Start accepts. Automaton has 110433 states and 191732 transitions. Word has length 122 [2021-11-19 13:32:36,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:36,760 INFO L470 AbstractCegarLoop]: Abstraction has 110433 states and 191732 transitions. [2021-11-19 13:32:36,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 8 states have internal predecessors, (163), 8 states have call successors, (27), 6 states have call predecessors, (27), 5 states have return successors, (26), 8 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-19 13:32:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 110433 states and 191732 transitions. [2021-11-19 13:32:36,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-19 13:32:36,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:36,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:36,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 13:32:36,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:32:36,984 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:32:36,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:36,984 INFO L85 PathProgramCache]: Analyzing trace with hash 902979164, now seen corresponding path program 1 times [2021-11-19 13:32:36,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:32:36,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608254684] [2021-11-19 13:32:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:36,985 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:32:36,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:32:36,986 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:32:36,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3257d57a-549d-4f13-8e31-e543bb553d54/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:32:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:37,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 13:32:37,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:37,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:38,277 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:32:38,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608254684] [2021-11-19 13:32:38,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608254684] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:38,277 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:38,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-19 13:32:38,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524629690] [2021-11-19 13:32:38,278 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:38,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:38,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:32:38,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:38,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:38,280 INFO L87 Difference]: Start difference. First operand 110433 states and 191732 transitions. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 8 states have call successors, (27), 6 states have call predecessors, (27), 5 states have return successors, (26), 8 states have call predecessors, (26), 7 states have call successors, (26)