./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V --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 d8e8f57de68bd156f96d4553940231369dc2e0f8c550ee7a61d6446a6f476745 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:20:14,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:20:14,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:20:14,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:20:14,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:20:14,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:20:14,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:20:14,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:20:14,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:20:14,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:20:14,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:20:14,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:20:14,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:20:14,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:20:14,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:20:14,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:20:14,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:20:14,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:20:14,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:20:14,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:20:14,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:20:14,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:20:14,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:20:14,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:20:14,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:20:14,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:20:14,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:20:14,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:20:14,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:20:14,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:20:14,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:20:14,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:20:14,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:20:14,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:20:14,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:20:14,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:20:14,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:20:14,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:20:14,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:20:14,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:20:14,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:20:14,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:20:14,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:20:14,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:20:14,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:20:14,801 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:20:14,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:20:14,802 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:20:14,802 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:20:14,802 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:20:14,802 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:20:14,803 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:20:14,804 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:20:14,804 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:20:14,804 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:20:14,804 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:20:14,805 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:20:14,805 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:20:14,805 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:20:14,805 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:20:14,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:20:14,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:20:14,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:20:14,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:20:14,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:20:14,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:20:14,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:20:14,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:20:14,810 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:20:14,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:20:14,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:20:14,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:20:14,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:20:14,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:20:14,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:20:14,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:20:14,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:20:14,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:20:14,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:20:14,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:20:14,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:20:14,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:20:14,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:20:14,813 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_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8e8f57de68bd156f96d4553940231369dc2e0f8c550ee7a61d6446a6f476745 [2021-11-23 03:20:15,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:20:15,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:20:15,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:20:15,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:20:15,162 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:20:15,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c [2021-11-23 03:20:15,259 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/data/4cd051b9a/5ad8724fa81346aa80fa61c9b5a9d138/FLAGc2c50d884 [2021-11-23 03:20:15,905 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:20:15,906 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c [2021-11-23 03:20:15,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/data/4cd051b9a/5ad8724fa81346aa80fa61c9b5a9d138/FLAGc2c50d884 [2021-11-23 03:20:16,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/data/4cd051b9a/5ad8724fa81346aa80fa61c9b5a9d138 [2021-11-23 03:20:16,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:20:16,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:20:16,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:20:16,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:20:16,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:20:16,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:16,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33fa43bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16, skipping insertion in model container [2021-11-23 03:20:16,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:16,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:20:16,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:20:16,594 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_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c[12672,12685] [2021-11-23 03:20:16,650 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:20:16,662 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:20:16,725 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_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/sv-benchmarks/c/product-lines/minepump_spec2_product62.cil.c[12672,12685] [2021-11-23 03:20:16,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:20:16,806 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:20:16,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16 WrapperNode [2021-11-23 03:20:16,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:20:16,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:20:16,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:20:16,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:20:16,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:16,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:16,933 INFO L137 Inliner]: procedures = 59, calls = 162, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 279 [2021-11-23 03:20:16,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:20:16,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:20:16,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:20:16,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:20:16,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:16,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:16,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:16,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:16,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:17,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:17,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:17,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:20:17,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:20:17,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:20:17,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:20:17,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (1/1) ... [2021-11-23 03:20:17,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:20:17,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:20:17,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:20:17,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:20:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:20:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 03:20:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 03:20:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 03:20:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 03:20:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 03:20:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 03:20:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 03:20:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 03:20:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:20:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:20:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 03:20:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 03:20:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-11-23 03:20:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-11-23 03:20:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-11-23 03:20:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-11-23 03:20:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-11-23 03:20:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-11-23 03:20:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:20:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 03:20:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 03:20:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:20:17,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:20:17,273 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:20:17,275 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:20:17,746 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:20:17,935 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:20:17,935 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:20:17,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:17 BoogieIcfgContainer [2021-11-23 03:20:17,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:20:17,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:20:17,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:20:17,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:20:17,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:20:16" (1/3) ... [2021-11-23 03:20:17,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b752c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:17, skipping insertion in model container [2021-11-23 03:20:17,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:20:16" (2/3) ... [2021-11-23 03:20:17,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b752c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:20:17, skipping insertion in model container [2021-11-23 03:20:17,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:17" (3/3) ... [2021-11-23 03:20:17,958 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product62.cil.c [2021-11-23 03:20:17,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:20:17,965 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:20:18,053 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:20:18,066 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 [2021-11-23 03:20:18,066 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:20:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-23 03:20:18,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:20:18,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:18,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:18,128 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1575993956, now seen corresponding path program 1 times [2021-11-23 03:20:18,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:20:18,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422154440] [2021-11-23 03:20:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:18,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:20:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:18,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:20:18,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422154440] [2021-11-23 03:20:18,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422154440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:18,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:20:18,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:20:18,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80939868] [2021-11-23 03:20:18,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:18,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:20:18,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:20:18,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:20:18,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:20:18,433 INFO L87 Difference]: Start difference. First operand has 75 states, 45 states have (on average 1.4) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (18), 13 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:20:18,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:18,559 INFO L93 Difference]: Finished difference Result 148 states and 199 transitions. [2021-11-23 03:20:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:20:18,563 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-23 03:20:18,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:18,577 INFO L225 Difference]: With dead ends: 148 [2021-11-23 03:20:18,578 INFO L226 Difference]: Without dead ends: 70 [2021-11-23 03:20:18,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:20:18,590 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:18,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:20:18,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-23 03:20:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-23 03:20:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.3095238095238095) internal successors, (55), 51 states have internal predecessors, (55), 18 states have call successors, (18), 10 states have call predecessors, (18), 9 states have return successors, (17), 12 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-23 03:20:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2021-11-23 03:20:18,666 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 17 [2021-11-23 03:20:18,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:18,668 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2021-11-23 03:20:18,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:20:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2021-11-23 03:20:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:20:18,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:18,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:18,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:20:18,676 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:18,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash -637143668, now seen corresponding path program 1 times [2021-11-23 03:20:18,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:20:18,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057509633] [2021-11-23 03:20:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:18,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:20:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:18,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:18,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:20:18,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057509633] [2021-11-23 03:20:18,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057509633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:18,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:20:18,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:20:18,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360464533] [2021-11-23 03:20:18,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:18,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:20:18,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:20:18,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:20:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:20:18,801 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:20:18,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:18,859 INFO L93 Difference]: Finished difference Result 117 states and 151 transitions. [2021-11-23 03:20:18,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:20:18,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-23 03:20:18,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:18,863 INFO L225 Difference]: With dead ends: 117 [2021-11-23 03:20:18,863 INFO L226 Difference]: Without dead ends: 62 [2021-11-23 03:20:18,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:20:18,866 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:18,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 119 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:20:18,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-23 03:20:18,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-23 03:20:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 46 states have internal predecessors, (49), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-23 03:20:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2021-11-23 03:20:18,890 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 18 [2021-11-23 03:20:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:18,890 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2021-11-23 03:20:18,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:20:18,891 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2021-11-23 03:20:18,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:20:18,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:18,893 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] [2021-11-23 03:20:18,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:20:18,893 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:18,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1521244462, now seen corresponding path program 1 times [2021-11-23 03:20:18,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:20:18,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880172864] [2021-11-23 03:20:18,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:18,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:20:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:19,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:19,106 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:20:19,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880172864] [2021-11-23 03:20:19,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880172864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:19,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:20:19,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:20:19,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792738096] [2021-11-23 03:20:19,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:19,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:20:19,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:20:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:20:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:20:19,120 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:20:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:19,409 INFO L93 Difference]: Finished difference Result 179 states and 231 transitions. [2021-11-23 03:20:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:20:19,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-11-23 03:20:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:19,422 INFO L225 Difference]: With dead ends: 179 [2021-11-23 03:20:19,422 INFO L226 Difference]: Without dead ends: 119 [2021-11-23 03:20:19,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:20:19,434 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 58 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:19,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 336 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:20:19,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-23 03:20:19,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2021-11-23 03:20:19,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 68 states have (on average 1.3088235294117647) internal successors, (89), 84 states have internal predecessors, (89), 29 states have call successors, (29), 17 states have call predecessors, (29), 17 states have return successors, (29), 19 states have call predecessors, (29), 29 states have call successors, (29) [2021-11-23 03:20:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 147 transitions. [2021-11-23 03:20:19,466 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 147 transitions. Word has length 20 [2021-11-23 03:20:19,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:19,466 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 147 transitions. [2021-11-23 03:20:19,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:20:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 147 transitions. [2021-11-23 03:20:19,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 03:20:19,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:19,470 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] [2021-11-23 03:20:19,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:20:19,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:19,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash 704413013, now seen corresponding path program 1 times [2021-11-23 03:20:19,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:20:19,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256378808] [2021-11-23 03:20:19,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:19,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:20:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:20:19,537 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:20:19,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256378808] [2021-11-23 03:20:19,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256378808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:19,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:20:19,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:20:19,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985756498] [2021-11-23 03:20:19,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:19,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:20:19,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:20:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:20:19,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:20:19,540 INFO L87 Difference]: Start difference. First operand 115 states and 147 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:20:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:19,679 INFO L93 Difference]: Finished difference Result 308 states and 404 transitions. [2021-11-23 03:20:19,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:20:19,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-23 03:20:19,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:19,689 INFO L225 Difference]: With dead ends: 308 [2021-11-23 03:20:19,690 INFO L226 Difference]: Without dead ends: 195 [2021-11-23 03:20:19,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:20:19,701 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 46 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:19,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 195 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:20:19,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-23 03:20:19,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2021-11-23 03:20:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 120 states have (on average 1.2333333333333334) internal successors, (148), 133 states have internal predecessors, (148), 38 states have call successors, (38), 32 states have call predecessors, (38), 32 states have return successors, (50), 34 states have call predecessors, (50), 38 states have call successors, (50) [2021-11-23 03:20:19,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 236 transitions. [2021-11-23 03:20:19,761 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 236 transitions. Word has length 23 [2021-11-23 03:20:19,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:19,761 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 236 transitions. [2021-11-23 03:20:19,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:20:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 236 transitions. [2021-11-23 03:20:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 03:20:19,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:19,767 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:20:19,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:20:19,768 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:19,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:19,768 INFO L85 PathProgramCache]: Analyzing trace with hash -179419647, now seen corresponding path program 1 times [2021-11-23 03:20:19,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:20:19,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009542676] [2021-11-23 03:20:19,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:19,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:20:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:20:19,845 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:20:19,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009542676] [2021-11-23 03:20:19,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009542676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:19,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:20:19,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:20:19,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070649001] [2021-11-23 03:20:19,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:19,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:20:19,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:20:19,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:20:19,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:20:19,849 INFO L87 Difference]: Start difference. First operand 191 states and 236 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:20:19,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:19,927 INFO L93 Difference]: Finished difference Result 273 states and 341 transitions. [2021-11-23 03:20:19,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:20:19,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 44 [2021-11-23 03:20:19,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:19,931 INFO L225 Difference]: With dead ends: 273 [2021-11-23 03:20:19,932 INFO L226 Difference]: Without dead ends: 271 [2021-11-23 03:20:19,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:20:19,934 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 55 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:19,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 139 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:20:19,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-11-23 03:20:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 268. [2021-11-23 03:20:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 166 states have (on average 1.2349397590361446) internal successors, (205), 185 states have internal predecessors, (205), 55 states have call successors, (55), 46 states have call predecessors, (55), 46 states have return successors, (75), 48 states have call predecessors, (75), 55 states have call successors, (75) [2021-11-23 03:20:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 335 transitions. [2021-11-23 03:20:19,972 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 335 transitions. Word has length 44 [2021-11-23 03:20:19,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:19,973 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 335 transitions. [2021-11-23 03:20:19,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:20:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 335 transitions. [2021-11-23 03:20:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 03:20:19,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:19,977 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:19,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:20:19,978 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1430228266, now seen corresponding path program 1 times [2021-11-23 03:20:19,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:20:19,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961016154] [2021-11-23 03:20:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:19,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:20:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 03:20:20,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:20:20,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961016154] [2021-11-23 03:20:20,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961016154] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:20:20,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35546149] [2021-11-23 03:20:20,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:20,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:20:20,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:20:20,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:20:20,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:20:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:20,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:20:20,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:20,898 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:20:20,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:20:20,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35546149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:20,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:20:20,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2021-11-23 03:20:20,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477798810] [2021-11-23 03:20:20,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:20,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:20:20,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:20:20,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:20:20,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-23 03:20:20,902 INFO L87 Difference]: Start difference. First operand 268 states and 335 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 03:20:21,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:21,019 INFO L93 Difference]: Finished difference Result 534 states and 675 transitions. [2021-11-23 03:20:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:20:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2021-11-23 03:20:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:21,023 INFO L225 Difference]: With dead ends: 534 [2021-11-23 03:20:21,023 INFO L226 Difference]: Without dead ends: 268 [2021-11-23 03:20:21,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:20:21,027 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 44 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:21,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 112 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:20:21,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-23 03:20:21,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2021-11-23 03:20:21,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 166 states have (on average 1.2048192771084338) internal successors, (200), 185 states have internal predecessors, (200), 55 states have call successors, (55), 46 states have call predecessors, (55), 46 states have return successors, (75), 48 states have call predecessors, (75), 55 states have call successors, (75) [2021-11-23 03:20:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 330 transitions. [2021-11-23 03:20:21,078 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 330 transitions. Word has length 63 [2021-11-23 03:20:21,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:21,079 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 330 transitions. [2021-11-23 03:20:21,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 03:20:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 330 transitions. [2021-11-23 03:20:21,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 03:20:21,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:21,085 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:21,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-23 03:20:21,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:20:21,315 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:21,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:21,316 INFO L85 PathProgramCache]: Analyzing trace with hash 126203125, now seen corresponding path program 1 times [2021-11-23 03:20:21,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:20:21,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981517542] [2021-11-23 03:20:21,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:21,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:20:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 03:20:21,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:20:21,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981517542] [2021-11-23 03:20:21,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981517542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:20:21,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970492971] [2021-11-23 03:20:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:21,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:20:21,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:20:21,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:20:21,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:20:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:21,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 03:20:21,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-23 03:20:22,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:20:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-23 03:20:22,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970492971] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 03:20:22,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:20:22,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 6] total 18 [2021-11-23 03:20:22,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390250797] [2021-11-23 03:20:22,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:22,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:20:22,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:20:22,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:20:22,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-23 03:20:22,374 INFO L87 Difference]: Start difference. First operand 268 states and 330 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-23 03:20:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:22,609 INFO L93 Difference]: Finished difference Result 600 states and 755 transitions. [2021-11-23 03:20:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:20:22,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 93 [2021-11-23 03:20:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:22,618 INFO L225 Difference]: With dead ends: 600 [2021-11-23 03:20:22,619 INFO L226 Difference]: Without dead ends: 334 [2021-11-23 03:20:22,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-11-23 03:20:22,622 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 136 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:22,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 191 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:20:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-23 03:20:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 328. [2021-11-23 03:20:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 209 states have (on average 1.1578947368421053) internal successors, (242), 228 states have internal predecessors, (242), 59 states have call successors, (59), 49 states have call predecessors, (59), 59 states have return successors, (82), 62 states have call predecessors, (82), 59 states have call successors, (82) [2021-11-23 03:20:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 383 transitions. [2021-11-23 03:20:22,678 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 383 transitions. Word has length 93 [2021-11-23 03:20:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:22,680 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 383 transitions. [2021-11-23 03:20:22,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-23 03:20:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 383 transitions. [2021-11-23 03:20:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-23 03:20:22,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:22,685 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:22,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 03:20:22,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 03:20:22,899 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:22,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:22,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1748848315, now seen corresponding path program 1 times [2021-11-23 03:20:22,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:20:22,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279969223] [2021-11-23 03:20:22,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:22,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:20:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:20:23,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:20:23,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279969223] [2021-11-23 03:20:23,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279969223] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:20:23,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919918478] [2021-11-23 03:20:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:23,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:20:23,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:20:23,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:20:23,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:20:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:23,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 03:20:23,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:23,556 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:20:23,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:20:23,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919918478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:23,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:20:23,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2021-11-23 03:20:23,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038848277] [2021-11-23 03:20:23,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:23,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:20:23,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:20:23,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:20:23,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:20:23,559 INFO L87 Difference]: Start difference. First operand 328 states and 383 transitions. Second operand has 11 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-23 03:20:23,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:23,962 INFO L93 Difference]: Finished difference Result 680 states and 827 transitions. [2021-11-23 03:20:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 03:20:23,963 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) Word has length 88 [2021-11-23 03:20:23,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:23,967 INFO L225 Difference]: With dead ends: 680 [2021-11-23 03:20:23,967 INFO L226 Difference]: Without dead ends: 478 [2021-11-23 03:20:23,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:20:23,970 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 52 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:23,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 662 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:20:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-23 03:20:24,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 463. [2021-11-23 03:20:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 297 states have (on average 1.1414141414141414) internal successors, (339), 320 states have internal predecessors, (339), 83 states have call successors, (83), 69 states have call predecessors, (83), 82 states have return successors, (126), 87 states have call predecessors, (126), 83 states have call successors, (126) [2021-11-23 03:20:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 548 transitions. [2021-11-23 03:20:24,014 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 548 transitions. Word has length 88 [2021-11-23 03:20:24,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:24,015 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 548 transitions. [2021-11-23 03:20:24,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-23 03:20:24,015 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 548 transitions. [2021-11-23 03:20:24,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 03:20:24,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:20:24,019 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:24,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:20:24,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 03:20:24,232 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:20:24,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:20:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash 383287722, now seen corresponding path program 1 times [2021-11-23 03:20:24,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:20:24,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634048635] [2021-11-23 03:20:24,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:24,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:20:24,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:20:24,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:20:24,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634048635] [2021-11-23 03:20:24,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634048635] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:20:24,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069251782] [2021-11-23 03:20:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:20:24,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:20:24,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:20:24,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:20:24,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:20:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:20:24,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 03:20:24,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:20:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-23 03:20:24,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:20:24,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069251782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:20:24,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:20:24,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 19 [2021-11-23 03:20:24,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117372671] [2021-11-23 03:20:24,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:20:24,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:20:24,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:20:24,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:20:24,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:20:24,783 INFO L87 Difference]: Start difference. First operand 463 states and 548 transitions. Second operand has 11 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:20:25,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:20:25,250 INFO L93 Difference]: Finished difference Result 993 states and 1194 transitions. [2021-11-23 03:20:25,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 03:20:25,251 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 2 states have call successors, (13) Word has length 91 [2021-11-23 03:20:25,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:20:25,252 INFO L225 Difference]: With dead ends: 993 [2021-11-23 03:20:25,252 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:20:25,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:20:25,258 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 53 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:20:25,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 461 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:20:25,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:20:25,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:20:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:20:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:20:25,260 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2021-11-23 03:20:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:20:25,261 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:20:25,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (13), 5 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-23 03:20:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:20:25,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:20:25,268 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:20:25,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:20:25,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:20:25,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:20:28,524 INFO L854 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 922 929) the Hoare annotation is: (or (not (= ~pumpRunning~0 0)) (= |old(~pumpRunning~0)| 0) (= 0 ~systemActive~0)) [2021-11-23 03:20:28,524 INFO L858 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 922 929) no Hoare annotation was computed. [2021-11-23 03:20:28,525 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 812 818) no Hoare annotation was computed. [2021-11-23 03:20:28,525 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 812 818) the Hoare annotation is: true [2021-11-23 03:20:28,525 INFO L854 garLoopResultBuilder]: At program point L865(line 865) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or (not .cse0) (= ~pumpRunning~0 0) .cse1 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,525 INFO L858 garLoopResultBuilder]: For program point L865-1(lines 846 870) no Hoare annotation was computed. [2021-11-23 03:20:28,526 INFO L854 garLoopResultBuilder]: At program point L860(line 860) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or (not .cse0) .cse1 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,526 INFO L854 garLoopResultBuilder]: At program point L856(line 856) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or (not .cse0) .cse1 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,526 INFO L858 garLoopResultBuilder]: For program point L854(lines 854 862) no Hoare annotation was computed. [2021-11-23 03:20:28,526 INFO L854 garLoopResultBuilder]: At program point L850(lines 850 867) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or (not .cse0) .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (or (not .cse1) .cse0 .cse2 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,526 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 846 870) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or (not .cse0) .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (or (not .cse1) .cse0 .cse2 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,527 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 846 870) no Hoare annotation was computed. [2021-11-23 03:20:28,527 INFO L854 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 603 614) the Hoare annotation is: (let ((.cse0 (= |old(~methaneLevelCritical~0)| 0)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or (= ~pumpRunning~0 0) .cse0 (not .cse1) .cse2) (or (not .cse0) .cse1 .cse2 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,527 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 603 614) no Hoare annotation was computed. [2021-11-23 03:20:28,527 INFO L861 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 615 623) the Hoare annotation is: true [2021-11-23 03:20:28,527 INFO L858 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 615 623) no Hoare annotation was computed. [2021-11-23 03:20:28,527 INFO L858 garLoopResultBuilder]: For program point L799-1(lines 799 805) no Hoare annotation was computed. [2021-11-23 03:20:28,527 INFO L854 garLoopResultBuilder]: At program point L886(line 886) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or (not .cse2) .cse0 .cse1) (or (and (not (= ~pumpRunning~0 0)) (= ~methaneLevelCritical~0 0) (= |timeShift_processEnvironment_~tmp~8#1| ~methaneLevelCritical~0)) .cse2 .cse1))) [2021-11-23 03:20:28,528 INFO L854 garLoopResultBuilder]: At program point L882(line 882) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or (not .cse2) .cse0 .cse1) (or (and (not (= |timeShift_processEnvironment_~tmp~8#1| 0)) (= |timeShift_processEnvironment_~tmp~8#1| ~methaneLevelCritical~0)) .cse2 .cse1) (or (not (= ~pumpRunning~0 0)) .cse2 .cse1))) [2021-11-23 03:20:28,528 INFO L854 garLoopResultBuilder]: At program point L878(line 878) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or (not .cse2) .cse0 .cse1) (or (not (= ~pumpRunning~0 0)) .cse2 .cse1))) [2021-11-23 03:20:28,528 INFO L858 garLoopResultBuilder]: For program point L878-1(line 878) no Hoare annotation was computed. [2021-11-23 03:20:28,528 INFO L854 garLoopResultBuilder]: At program point L548(line 548) the Hoare annotation is: (let ((.cse1 (= 0 ~systemActive~0))) (and (let ((.cse0 (= |timeShift_processEnvironment_~tmp~8#1| ~methaneLevelCritical~0))) (or (and (= ~methaneLevelCritical~0 0) .cse0) (= |old(~pumpRunning~0)| 0) .cse1 (and (= ~pumpRunning~0 0) .cse0))) (or (not (= |old(~methAndRunningLastTime~0)| 0)) (= ~methAndRunningLastTime~0 0) .cse1))) [2021-11-23 03:20:28,529 INFO L858 garLoopResultBuilder]: For program point L548-1(line 548) no Hoare annotation was computed. [2021-11-23 03:20:28,529 INFO L854 garLoopResultBuilder]: At program point L891(line 891) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0))) (or (= |old(~pumpRunning~0)| 0) .cse0))) [2021-11-23 03:20:28,529 INFO L854 garLoopResultBuilder]: At program point L891-1(lines 872 896) the Hoare annotation is: (let ((.cse1 (= 0 ~systemActive~0))) (and (let ((.cse0 (= |timeShift_processEnvironment_~tmp~8#1| ~methaneLevelCritical~0))) (or (and (= ~methaneLevelCritical~0 0) .cse0) (= |old(~pumpRunning~0)| 0) .cse1 (and (= ~pumpRunning~0 0) .cse0))) (or (not (= |old(~methAndRunningLastTime~0)| 0)) (= ~methAndRunningLastTime~0 0) .cse1))) [2021-11-23 03:20:28,529 INFO L858 garLoopResultBuilder]: For program point L792-1(lines 791 810) no Hoare annotation was computed. [2021-11-23 03:20:28,529 INFO L858 garLoopResultBuilder]: For program point L880(lines 880 888) no Hoare annotation was computed. [2021-11-23 03:20:28,530 INFO L858 garLoopResultBuilder]: For program point L876(lines 876 893) no Hoare annotation was computed. [2021-11-23 03:20:28,530 INFO L858 garLoopResultBuilder]: For program point L554(lines 554 564) no Hoare annotation was computed. [2021-11-23 03:20:28,530 INFO L854 garLoopResultBuilder]: At program point L550(lines 550 567) the Hoare annotation is: (let ((.cse4 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| ~methaneLevelCritical~0))) (let ((.cse2 (= |old(~pumpRunning~0)| 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse5 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse6 (and (= ~methAndRunningLastTime~0 0) .cse4)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or (and (= |timeShift_processEnvironment_~tmp~8#1| ~methaneLevelCritical~0) .cse4) .cse2 .cse3) (or .cse5 .cse6 (and .cse0 .cse4) .cse3) (or .cse5 .cse6 (not .cse1) .cse3)))) [2021-11-23 03:20:28,530 INFO L854 garLoopResultBuilder]: At program point L550-1(lines 542 570) the Hoare annotation is: (let ((.cse4 (= 0 ~systemActive~0)) (.cse5 (= ~methaneLevelCritical~0 0))) (let ((.cse6 (= ~pumpRunning~0 0)) (.cse3 (not .cse5)) (.cse10 (= |timeShift_processEnvironment_~tmp~8#1| ~methaneLevelCritical~0)) (.cse9 (= ~methAndRunningLastTime~0 0)) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse7 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| ~methaneLevelCritical~0)) (.cse11 (not .cse4))) (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (and .cse9 .cse0 .cse7 .cse11)) (.cse8 (and .cse6 .cse9 .cse3 .cse10 .cse7 .cse11))) (and (or (not .cse0) .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse2 .cse5 (and (not .cse6) .cse7) .cse8 .cse4) (or .cse8 (and .cse9 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| 0) .cse10 .cse7) .cse0 .cse4))))) [2021-11-23 03:20:28,531 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 788 811) the Hoare annotation is: (let ((.cse2 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse3 (= 0 ~systemActive~0))) (and (or (not .cse0) .cse1 .cse2 .cse3) (or .cse2 (= ~methAndRunningLastTime~0 0) .cse3) (or (not .cse1) .cse0 .cse3))) [2021-11-23 03:20:28,531 INFO L854 garLoopResultBuilder]: At program point L526(line 526) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0) (or (= |old(~pumpRunning~0)| 0) .cse0))) [2021-11-23 03:20:28,531 INFO L858 garLoopResultBuilder]: For program point L555(lines 555 561) no Hoare annotation was computed. [2021-11-23 03:20:28,531 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 788 811) no Hoare annotation was computed. [2021-11-23 03:20:28,532 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 526) no Hoare annotation was computed. [2021-11-23 03:20:28,532 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 418 447) no Hoare annotation was computed. [2021-11-23 03:20:28,532 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 418 447) the Hoare annotation is: true [2021-11-23 03:20:28,532 INFO L861 garLoopResultBuilder]: At program point L443(lines 418 447) the Hoare annotation is: true [2021-11-23 03:20:28,532 INFO L858 garLoopResultBuilder]: For program point L439(line 439) no Hoare annotation was computed. [2021-11-23 03:20:28,533 INFO L858 garLoopResultBuilder]: For program point L432(lines 432 436) no Hoare annotation was computed. [2021-11-23 03:20:28,533 INFO L861 garLoopResultBuilder]: At program point L432-1(lines 432 436) the Hoare annotation is: true [2021-11-23 03:20:28,533 INFO L861 garLoopResultBuilder]: At program point L428-2(lines 428 442) the Hoare annotation is: true [2021-11-23 03:20:28,533 INFO L861 garLoopResultBuilder]: At program point L424(line 424) the Hoare annotation is: true [2021-11-23 03:20:28,533 INFO L858 garLoopResultBuilder]: For program point L424-1(line 424) no Hoare annotation was computed. [2021-11-23 03:20:28,534 INFO L858 garLoopResultBuilder]: For program point L746(lines 746 752) no Hoare annotation was computed. [2021-11-23 03:20:28,534 INFO L854 garLoopResultBuilder]: At program point L746-1(lines 746 752) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~3#1| 1)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2))) [2021-11-23 03:20:28,534 INFO L854 garLoopResultBuilder]: At program point L771(lines 726 773) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~3#1| 1)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2) (and (not (= ~pumpRunning~0 0)) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1 .cse2))) [2021-11-23 03:20:28,534 INFO L854 garLoopResultBuilder]: At program point L738(line 738) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~3#1| 1)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2) (and (not (= ~pumpRunning~0 0)) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1 .cse2))) [2021-11-23 03:20:28,535 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 03:20:28,535 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:20:28,535 INFO L854 garLoopResultBuilder]: At program point L508(lines 508 515) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~3#1| 1) (not (= 0 ~systemActive~0))) [2021-11-23 03:20:28,535 INFO L854 garLoopResultBuilder]: At program point L764-2(lines 756 769) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~3#1| 1)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2))) [2021-11-23 03:20:28,535 INFO L861 garLoopResultBuilder]: At program point L508-2(lines 508 515) the Hoare annotation is: true [2021-11-23 03:20:28,536 INFO L858 garLoopResultBuilder]: For program point L727(lines 726 773) no Hoare annotation was computed. [2021-11-23 03:20:28,536 INFO L854 garLoopResultBuilder]: At program point L748(line 748) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~3#1| 1)) (.cse2 (not (= 0 ~systemActive~0)))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2) (and (not (= ~pumpRunning~0 0)) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1 .cse2))) [2021-11-23 03:20:28,536 INFO L861 garLoopResultBuilder]: At program point L777(lines 716 781) the Hoare annotation is: true [2021-11-23 03:20:28,536 INFO L858 garLoopResultBuilder]: For program point L736(lines 736 742) no Hoare annotation was computed. [2021-11-23 03:20:28,536 INFO L858 garLoopResultBuilder]: For program point L736-1(lines 736 742) no Hoare annotation was computed. [2021-11-23 03:20:28,537 INFO L854 garLoopResultBuilder]: At program point L774(lines 725 775) the Hoare annotation is: false [2021-11-23 03:20:28,537 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 820 844) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or (not .cse0) .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (or (not .cse1) .cse0 .cse2 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,537 INFO L858 garLoopResultBuilder]: For program point L828(lines 828 836) no Hoare annotation was computed. [2021-11-23 03:20:28,537 INFO L854 garLoopResultBuilder]: At program point L824(lines 824 841) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or (not .cse0) .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (or (not .cse1) .cse0 .cse2 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,538 INFO L854 garLoopResultBuilder]: At program point L839(line 839) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or (not .cse0) .cse1 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,538 INFO L858 garLoopResultBuilder]: For program point L839-1(lines 820 844) no Hoare annotation was computed. [2021-11-23 03:20:28,538 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 820 844) no Hoare annotation was computed. [2021-11-23 03:20:28,538 INFO L854 garLoopResultBuilder]: At program point L910(line 910) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or (not .cse0) (= ~pumpRunning~0 0) .cse1 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,538 INFO L854 garLoopResultBuilder]: At program point L910-1(line 910) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or (not .cse0) (= ~pumpRunning~0 0) .cse1 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,539 INFO L854 garLoopResultBuilder]: At program point L834(line 834) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or (not .cse0) (= ~pumpRunning~0 0) .cse1 (not (= ~methAndRunningLastTime~0 0))))) [2021-11-23 03:20:28,539 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 591 602) no Hoare annotation was computed. [2021-11-23 03:20:28,539 INFO L861 garLoopResultBuilder]: At program point waterRiseENTRY(lines 591 602) the Hoare annotation is: true [2021-11-23 03:20:28,539 INFO L861 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 930 940) the Hoare annotation is: true [2021-11-23 03:20:28,539 INFO L858 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 930 940) no Hoare annotation was computed. [2021-11-23 03:20:28,540 INFO L861 garLoopResultBuilder]: At program point L935(line 935) the Hoare annotation is: true [2021-11-23 03:20:28,540 INFO L858 garLoopResultBuilder]: For program point L935-1(line 935) no Hoare annotation was computed. [2021-11-23 03:20:28,544 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:20:28,546 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:20:28,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:20:28 BoogieIcfgContainer [2021-11-23 03:20:28,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:20:28,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:20:28,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:20:28,584 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:20:28,584 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:20:17" (3/4) ... [2021-11-23 03:20:28,588 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:20:28,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2021-11-23 03:20:28,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 03:20:28,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 03:20:28,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2021-11-23 03:20:28,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 03:20:28,596 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 03:20:28,596 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:20:28,596 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 03:20:28,596 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2021-11-23 03:20:28,597 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2021-11-23 03:20:28,610 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 82 nodes and edges [2021-11-23 03:20:28,612 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2021-11-23 03:20:28,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-23 03:20:28,614 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 03:20:28,614 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 03:20:28,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:20:28,616 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:20:28,646 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || 0 == systemActive) && ((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || 0 == systemActive)) && ((!(pumpRunning == 0) || \old(pumpRunning) == 0) || 0 == systemActive) [2021-11-23 03:20:28,648 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((methaneLevelCritical == 0 && tmp == methaneLevelCritical) || \old(pumpRunning) == 0) || 0 == systemActive) || (pumpRunning == 0 && tmp == methaneLevelCritical)) && ((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || 0 == systemActive) [2021-11-23 03:20:28,648 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(pumpRunning == 0) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) [2021-11-23 03:20:28,649 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == 0 || methaneLevelCritical == 0) || \old(pumpRunning) == 0) || 0 == systemActive) && (((tmp == methaneLevelCritical && tmp == methaneLevelCritical) || \old(pumpRunning) == 0) || 0 == systemActive)) && (((!(\old(methAndRunningLastTime) == 0) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || (pumpRunning == 0 && tmp == methaneLevelCritical)) || 0 == systemActive)) && (((!(\old(methAndRunningLastTime) == 0) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || !(methaneLevelCritical == 0)) || 0 == systemActive) [2021-11-23 03:20:28,649 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(pumpRunning == 0) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) [2021-11-23 03:20:28,650 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (((methAndRunningLastTime == 0 && \old(pumpRunning) == 0) && tmp == methaneLevelCritical) && !(0 == systemActive))) || !(methaneLevelCritical == 0)) || 0 == systemActive) && (((((!(\old(methAndRunningLastTime) == 0) || (((methAndRunningLastTime == 0 && \old(pumpRunning) == 0) && tmp == methaneLevelCritical) && !(0 == systemActive))) || methaneLevelCritical == 0) || (!(pumpRunning == 0) && tmp == methaneLevelCritical)) || (((((pumpRunning == 0 && methAndRunningLastTime == 0) && !(methaneLevelCritical == 0)) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) && !(0 == systemActive))) || 0 == systemActive)) && ((((((((pumpRunning == 0 && methAndRunningLastTime == 0) && !(methaneLevelCritical == 0)) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) && !(0 == systemActive)) || (((methAndRunningLastTime == 0 && tmp == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || \old(pumpRunning) == 0) || 0 == systemActive) [2021-11-23 03:20:28,650 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\old(pumpRunning) == 0 || !(methaneLevelCritical == 0)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) [2021-11-23 03:20:28,651 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(\old(methAndRunningLastTime) == 0) || 0 == systemActive) && (\old(pumpRunning) == 0 || 0 == systemActive) [2021-11-23 03:20:28,693 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:20:28,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:20:28,694 INFO L158 Benchmark]: Toolchain (without parser) took 12484.80ms. Allocated memory was 92.3MB in the beginning and 134.2MB in the end (delta: 41.9MB). Free memory was 69.9MB in the beginning and 46.6MB in the end (delta: 23.3MB). Peak memory consumption was 63.8MB. Max. memory is 16.1GB. [2021-11-23 03:20:28,694 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 92.3MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:20:28,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.90ms. Allocated memory is still 92.3MB. Free memory was 69.7MB in the beginning and 57.7MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:20:28,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 124.96ms. Allocated memory is still 92.3MB. Free memory was 57.7MB in the beginning and 54.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 03:20:28,696 INFO L158 Benchmark]: Boogie Preprocessor took 84.28ms. Allocated memory is still 92.3MB. Free memory was 54.9MB in the beginning and 53.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:20:28,696 INFO L158 Benchmark]: RCFGBuilder took 924.66ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 83.4MB in the end (delta: -30.1MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2021-11-23 03:20:28,697 INFO L158 Benchmark]: TraceAbstraction took 10634.18ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 82.8MB in the beginning and 54.0MB in the end (delta: 28.8MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. [2021-11-23 03:20:28,697 INFO L158 Benchmark]: Witness Printer took 110.04ms. Allocated memory is still 134.2MB. Free memory was 54.0MB in the beginning and 46.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:20:28,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 92.3MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.90ms. Allocated memory is still 92.3MB. Free memory was 69.7MB in the beginning and 57.7MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 124.96ms. Allocated memory is still 92.3MB. Free memory was 57.7MB in the beginning and 54.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.28ms. Allocated memory is still 92.3MB. Free memory was 54.9MB in the beginning and 53.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 924.66ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 83.4MB in the end (delta: -30.1MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10634.18ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 82.8MB in the beginning and 54.0MB in the end (delta: 28.8MB). Peak memory consumption was 70.4MB. Max. memory is 16.1GB. * Witness Printer took 110.04ms. Allocated memory is still 134.2MB. Free memory was 54.0MB in the beginning and 46.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 526]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.5s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 475 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 451 mSDsluCounter, 2293 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1964 mSDsCounter, 103 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1243 IncrementalHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 103 mSolverCounterUnsat, 703 mSDtfsCounter, 1243 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 545 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=463occurred in iteration=8, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 32 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 43 LocationsWithAnnotation, 1220 PreInvPairs, 1416 NumberOfFragments, 1015 HoareAnnotationTreeSize, 1220 FomulaSimplifications, 1100 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 43 FomulaSimplificationsInter, 8584 FormulaSimplificationTreeSizeReductionInter, 2.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 792 NumberOfCodeBlocks, 792 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 871 ConstructedInterpolants, 0 QuantifiedInterpolants, 1875 SizeOfPredicates, 23 NumberOfNonLiveVariables, 1975 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 339/397 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 725]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 788]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(methAndRunningLastTime) == 0)) || 0 == systemActive) && ((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || 0 == systemActive)) && ((!(pumpRunning == 0) || \old(pumpRunning) == 0) || 0 == systemActive) - InvariantResult [Line: 550]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0 || methaneLevelCritical == 0) || \old(pumpRunning) == 0) || 0 == systemActive) && (((tmp == methaneLevelCritical && tmp == methaneLevelCritical) || \old(pumpRunning) == 0) || 0 == systemActive)) && (((!(\old(methAndRunningLastTime) == 0) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || (pumpRunning == 0 && tmp == methaneLevelCritical)) || 0 == systemActive)) && (((!(\old(methAndRunningLastTime) == 0) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || !(methaneLevelCritical == 0)) || 0 == systemActive) - InvariantResult [Line: 716]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 872]: Loop Invariant Derived loop invariant: ((((methaneLevelCritical == 0 && tmp == methaneLevelCritical) || \old(pumpRunning) == 0) || 0 == systemActive) || (pumpRunning == 0 && tmp == methaneLevelCritical)) && ((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || 0 == systemActive) - InvariantResult [Line: 418]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 428]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 910]: Loop Invariant Derived loop invariant: ((\old(pumpRunning) == 0 || !(methaneLevelCritical == 0)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 508]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 1) && !(0 == systemActive) - InvariantResult [Line: 746]: Loop Invariant Derived loop invariant: (((!(pumpRunning == 0) && splverifierCounter == 0) && tmp == 1) && !(0 == systemActive)) || (((methAndRunningLastTime == 0 && splverifierCounter == 0) && tmp == 1) && !(0 == systemActive)) - InvariantResult [Line: 726]: Loop Invariant Derived loop invariant: (((methAndRunningLastTime == 0 && splverifierCounter == 0) && tmp == 1) && !(0 == systemActive)) || ((((!(pumpRunning == 0) && !(methaneLevelCritical == 0)) && splverifierCounter == 0) && tmp == 1) && !(0 == systemActive)) - InvariantResult [Line: 542]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (((methAndRunningLastTime == 0 && \old(pumpRunning) == 0) && tmp == methaneLevelCritical) && !(0 == systemActive))) || !(methaneLevelCritical == 0)) || 0 == systemActive) && (((((!(\old(methAndRunningLastTime) == 0) || (((methAndRunningLastTime == 0 && \old(pumpRunning) == 0) && tmp == methaneLevelCritical) && !(0 == systemActive))) || methaneLevelCritical == 0) || (!(pumpRunning == 0) && tmp == methaneLevelCritical)) || (((((pumpRunning == 0 && methAndRunningLastTime == 0) && !(methaneLevelCritical == 0)) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) && !(0 == systemActive))) || 0 == systemActive)) && ((((((((pumpRunning == 0 && methAndRunningLastTime == 0) && !(methaneLevelCritical == 0)) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) && !(0 == systemActive)) || (((methAndRunningLastTime == 0 && tmp == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || \old(pumpRunning) == 0) || 0 == systemActive) - InvariantResult [Line: 850]: Loop Invariant Derived loop invariant: (((!(pumpRunning == 0) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 824]: Loop Invariant Derived loop invariant: (((!(pumpRunning == 0) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 508]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 526]: Loop Invariant Derived loop invariant: (!(\old(methAndRunningLastTime) == 0) || 0 == systemActive) && (\old(pumpRunning) == 0 || 0 == systemActive) RESULT: Ultimate proved your program to be correct! [2021-11-23 03:20:28,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0498d9a-4ecf-4f10-ab77-9f8ef69df2b1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE