./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product44.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_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/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_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/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_713cba6b-f884-4013-b54d-d4c57c564bf7/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 471ad46a1662a2ee36763023473e29e175f1086d40bbf36d792af661871bf09e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:21:24,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:21:24,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:21:24,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:21:24,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:21:24,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:21:24,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:21:24,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:21:24,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:21:24,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:21:24,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:21:24,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:21:24,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:21:24,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:21:24,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:21:24,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:21:24,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:21:24,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:21:24,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:21:24,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:21:24,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:21:24,700 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:21:24,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:21:24,702 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:21:24,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:21:24,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:21:24,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:21:24,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:21:24,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:21:24,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:21:24,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:21:24,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:21:24,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:21:24,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:21:24,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:21:24,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:21:24,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:21:24,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:21:24,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:21:24,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:21:24,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:21:24,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:21:24,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:21:24,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:21:24,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:21:24,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:21:24,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:21:24,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:21:24,745 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:21:24,746 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:21:24,746 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:21:24,746 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:21:24,746 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:21:24,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:21:24,747 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:21:24,747 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:21:24,747 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:21:24,747 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:21:24,748 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:21:24,748 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:21:24,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:21:24,749 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:21:24,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:21:24,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:21:24,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:21:24,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:21:24,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:21:24,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:21:24,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:21:24,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:21:24,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:21:24,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:21:24,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:21:24,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:21:24,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:21:24,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:21:24,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:21:24,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:21:24,753 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:21:24,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:21:24,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:21:24,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:21:24,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:21:24,754 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_713cba6b-f884-4013-b54d-d4c57c564bf7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 471ad46a1662a2ee36763023473e29e175f1086d40bbf36d792af661871bf09e [2021-11-23 02:21:25,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:21:25,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:21:25,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:21:25,042 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:21:25,043 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:21:25,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c [2021-11-23 02:21:25,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/data/6b1e119c0/854587830a2146369468150dc183c97c/FLAG947236b8f [2021-11-23 02:21:25,594 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:21:25,595 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c [2021-11-23 02:21:25,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/data/6b1e119c0/854587830a2146369468150dc183c97c/FLAG947236b8f [2021-11-23 02:21:25,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/data/6b1e119c0/854587830a2146369468150dc183c97c [2021-11-23 02:21:25,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:21:25,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:21:25,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:21:25,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:21:25,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:21:25,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:25" (1/1) ... [2021-11-23 02:21:25,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d3011a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:25, skipping insertion in model container [2021-11-23 02:21:25,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:21:25" (1/1) ... [2021-11-23 02:21:25,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:21:26,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:21:26,295 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_713cba6b-f884-4013-b54d-d4c57c564bf7/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c[1605,1618] [2021-11-23 02:21:26,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:21:26,464 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:21:26,482 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_713cba6b-f884-4013-b54d-d4c57c564bf7/sv-benchmarks/c/product-lines/minepump_spec2_product44.cil.c[1605,1618] [2021-11-23 02:21:26,565 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:21:26,591 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:21:26,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26 WrapperNode [2021-11-23 02:21:26,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:21:26,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:21:26,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:21:26,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:21:26,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (1/1) ... [2021-11-23 02:21:26,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (1/1) ... [2021-11-23 02:21:26,686 INFO L137 Inliner]: procedures = 56, calls = 155, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 252 [2021-11-23 02:21:26,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:21:26,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:21:26,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:21:26,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:21:26,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (1/1) ... [2021-11-23 02:21:26,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (1/1) ... [2021-11-23 02:21:26,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (1/1) ... [2021-11-23 02:21:26,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (1/1) ... [2021-11-23 02:21:26,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (1/1) ... [2021-11-23 02:21:26,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (1/1) ... [2021-11-23 02:21:26,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (1/1) ... [2021-11-23 02:21:26,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:21:26,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:21:26,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:21:26,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:21:26,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (1/1) ... [2021-11-23 02:21:26,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:21:26,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:26,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:21:26,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:21:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:21:26,822 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 02:21:26,822 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 02:21:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 02:21:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 02:21:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 02:21:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 02:21:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 02:21:26,823 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 02:21:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 02:21:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 02:21:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:21:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 02:21:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 02:21:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:21:26,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:21:26,898 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:21:26,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:21:27,253 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:21:27,344 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:21:27,349 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:21:27,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:27 BoogieIcfgContainer [2021-11-23 02:21:27,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:21:27,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:21:27,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:21:27,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:21:27,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:21:25" (1/3) ... [2021-11-23 02:21:27,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754cffa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:27, skipping insertion in model container [2021-11-23 02:21:27,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:21:26" (2/3) ... [2021-11-23 02:21:27,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@754cffa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:21:27, skipping insertion in model container [2021-11-23 02:21:27,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:27" (3/3) ... [2021-11-23 02:21:27,363 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product44.cil.c [2021-11-23 02:21:27,369 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:21:27,369 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:21:27,422 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:21:27,429 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 02:21:27,429 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:21:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-23 02:21:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:21:27,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:27,461 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 02:21:27,462 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:27,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:27,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2123599393, now seen corresponding path program 1 times [2021-11-23 02:21:27,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:27,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787355854] [2021-11-23 02:21:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:27,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:27,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:27,763 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 02:21:27,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:27,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787355854] [2021-11-23 02:21:27,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787355854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:27,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:21:27,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:21:27,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607478903] [2021-11-23 02:21:27,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:27,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:21:27,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:27,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:21:27,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:21:27,807 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) 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 02:21:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:27,903 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2021-11-23 02:21:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:21:27,906 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 02:21:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:27,917 INFO L225 Difference]: With dead ends: 100 [2021-11-23 02:21:27,917 INFO L226 Difference]: Without dead ends: 46 [2021-11-23 02:21:27,920 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 02:21:27,924 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:27,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:21:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-23 02:21:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-23 02:21:27,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 02:21:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-11-23 02:21:27,965 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 17 [2021-11-23 02:21:27,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:27,966 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-11-23 02:21:27,966 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 02:21:27,966 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2021-11-23 02:21:27,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:21:27,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:27,969 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 02:21:27,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:21:27,969 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:27,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:27,970 INFO L85 PathProgramCache]: Analyzing trace with hash 564005331, now seen corresponding path program 1 times [2021-11-23 02:21:27,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:27,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580939909] [2021-11-23 02:21:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:27,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:21:28,041 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:28,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580939909] [2021-11-23 02:21:28,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580939909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:28,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:21:28,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:21:28,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780898025] [2021-11-23 02:21:28,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:28,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:21:28,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:21:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:21:28,045 INFO L87 Difference]: Start difference. First operand 46 states and 58 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 02:21:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:28,085 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2021-11-23 02:21:28,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:21:28,085 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 02:21:28,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:28,087 INFO L225 Difference]: With dead ends: 69 [2021-11-23 02:21:28,087 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 02:21:28,088 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 02:21:28,089 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:28,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:21:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 02:21:28,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-23 02:21:28,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-23 02:21:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-11-23 02:21:28,100 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 18 [2021-11-23 02:21:28,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:28,100 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-11-23 02:21:28,100 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 02:21:28,100 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-11-23 02:21:28,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:21:28,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:28,102 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 02:21:28,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:21:28,102 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:28,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:28,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1601632795, now seen corresponding path program 1 times [2021-11-23 02:21:28,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:28,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198878028] [2021-11-23 02:21:28,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:28,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:28,199 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 02:21:28,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:28,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198878028] [2021-11-23 02:21:28,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198878028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:28,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:21:28,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:21:28,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522867383] [2021-11-23 02:21:28,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:28,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:21:28,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:28,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:21:28,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:21:28,203 INFO L87 Difference]: Start difference. First operand 38 states and 47 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 02:21:28,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:28,328 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2021-11-23 02:21:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:21:28,328 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 02:21:28,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:28,330 INFO L225 Difference]: With dead ends: 107 [2021-11-23 02:21:28,330 INFO L226 Difference]: Without dead ends: 71 [2021-11-23 02:21:28,331 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 02:21:28,333 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 26 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:28,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 175 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:21:28,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-23 02:21:28,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2021-11-23 02:21:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 52 states have internal predecessors, (57), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 02:21:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2021-11-23 02:21:28,349 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 20 [2021-11-23 02:21:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:28,350 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2021-11-23 02:21:28,350 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 02:21:28,350 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2021-11-23 02:21:28,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:21:28,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:28,352 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 02:21:28,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:21:28,352 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:28,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:28,353 INFO L85 PathProgramCache]: Analyzing trace with hash 454893748, now seen corresponding path program 1 times [2021-11-23 02:21:28,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:28,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800937307] [2021-11-23 02:21:28,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:28,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:28,414 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 02:21:28,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:28,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800937307] [2021-11-23 02:21:28,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800937307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:28,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:21:28,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:21:28,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930367257] [2021-11-23 02:21:28,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:28,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:21:28,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:28,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:21:28,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:21:28,417 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 02:21:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:28,495 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-11-23 02:21:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:21:28,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 02:21:28,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:28,500 INFO L225 Difference]: With dead ends: 103 [2021-11-23 02:21:28,500 INFO L226 Difference]: Without dead ends: 101 [2021-11-23 02:21:28,501 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 02:21:28,507 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:28,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 73 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:21:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-23 02:21:28,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-23 02:21:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.303030303030303) internal successors, (86), 78 states have internal predecessors, (86), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (22), 17 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-23 02:21:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2021-11-23 02:21:28,537 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 23 [2021-11-23 02:21:28,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:28,537 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2021-11-23 02:21:28,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 02:21:28,538 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2021-11-23 02:21:28,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 02:21:28,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:28,540 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:21:28,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:21:28,541 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:28,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:28,541 INFO L85 PathProgramCache]: Analyzing trace with hash -228366804, now seen corresponding path program 1 times [2021-11-23 02:21:28,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:28,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156997498] [2021-11-23 02:21:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:28,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:28,866 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:21:28,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:28,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156997498] [2021-11-23 02:21:28,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156997498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:28,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:21:28,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 02:21:28,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838620396] [2021-11-23 02:21:28,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:28,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:21:28,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:21:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:21:28,872 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:21:29,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:29,332 INFO L93 Difference]: Finished difference Result 317 states and 406 transitions. [2021-11-23 02:21:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:21:29,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 42 [2021-11-23 02:21:29,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:29,344 INFO L225 Difference]: With dead ends: 317 [2021-11-23 02:21:29,344 INFO L226 Difference]: Without dead ends: 247 [2021-11-23 02:21:29,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-23 02:21:29,354 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 126 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:29,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 149 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:21:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-23 02:21:29,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 219. [2021-11-23 02:21:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 147 states have (on average 1.272108843537415) internal successors, (187), 166 states have internal predecessors, (187), 36 states have call successors, (36), 30 states have call predecessors, (36), 35 states have return successors, (58), 33 states have call predecessors, (58), 36 states have call successors, (58) [2021-11-23 02:21:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 281 transitions. [2021-11-23 02:21:29,420 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 281 transitions. Word has length 42 [2021-11-23 02:21:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:29,420 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 281 transitions. [2021-11-23 02:21:29,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:21:29,422 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 281 transitions. [2021-11-23 02:21:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 02:21:29,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:29,434 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] [2021-11-23 02:21:29,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:21:29,435 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:29,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1439576305, now seen corresponding path program 1 times [2021-11-23 02:21:29,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:29,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442438278] [2021-11-23 02:21:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:29,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:21:29,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:29,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442438278] [2021-11-23 02:21:29,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442438278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:21:29,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:21:29,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 02:21:29,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314579172] [2021-11-23 02:21:29,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:21:29,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:21:29,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:29,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:21:29,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:21:29,625 INFO L87 Difference]: Start difference. First operand 219 states and 281 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 02:21:29,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:29,866 INFO L93 Difference]: Finished difference Result 510 states and 669 transitions. [2021-11-23 02:21:29,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:21:29,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2021-11-23 02:21:29,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:29,871 INFO L225 Difference]: With dead ends: 510 [2021-11-23 02:21:29,872 INFO L226 Difference]: Without dead ends: 293 [2021-11-23 02:21:29,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:21:29,876 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 76 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:29,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 159 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:21:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-23 02:21:29,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 237. [2021-11-23 02:21:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 158 states have (on average 1.2658227848101267) internal successors, (200), 178 states have internal predecessors, (200), 39 states have call successors, (39), 34 states have call predecessors, (39), 39 states have return successors, (64), 34 states have call predecessors, (64), 39 states have call successors, (64) [2021-11-23 02:21:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 303 transitions. [2021-11-23 02:21:29,942 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 303 transitions. Word has length 49 [2021-11-23 02:21:29,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:29,942 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 303 transitions. [2021-11-23 02:21:29,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-23 02:21:29,943 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 303 transitions. [2021-11-23 02:21:29,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 02:21:29,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:29,945 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-23 02:21:29,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:21:29,946 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:29,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:29,946 INFO L85 PathProgramCache]: Analyzing trace with hash 172599243, now seen corresponding path program 1 times [2021-11-23 02:21:29,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:29,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989948417] [2021-11-23 02:21:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:29,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:30,133 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 02:21:30,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:30,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989948417] [2021-11-23 02:21:30,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989948417] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:21:30,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200996856] [2021-11-23 02:21:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:30,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:30,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:30,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:21:30,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:21:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:30,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 02:21:30,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:30,707 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:21:30,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:31,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:21:31,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200996856] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:21:31,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649977361] [2021-11-23 02:21:31,130 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-11-23 02:21:31,130 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:21:31,135 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:21:31,141 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:21:31,141 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:21:37,689 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 40 for LOIs [2021-11-23 02:21:37,698 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2021-11-23 02:21:37,992 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 37 for LOIs [2021-11-23 02:21:37,999 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 24 for LOIs [2021-11-23 02:21:38,003 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:21:42,178 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3394#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483648)) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 0 ~methAndRunningLastTime~0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 2147483647) (<= 0 |old(~methAndRunningLastTime~0)|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 0)) (= ~head~0.base 0) (<= 0 |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1|) (= |#NULL.offset| 0) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| ~methaneLevelCritical~0) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 0)) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 02:21:42,179 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:21:42,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:21:42,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2021-11-23 02:21:42,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36592731] [2021-11-23 02:21:42,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:21:42,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-23 02:21:42,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-23 02:21:42,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2389, Unknown=0, NotChecked=0, Total=2652 [2021-11-23 02:21:42,183 INFO L87 Difference]: Start difference. First operand 237 states and 303 transitions. Second operand has 24 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-23 02:21:44,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:44,102 INFO L93 Difference]: Finished difference Result 783 states and 1053 transitions. [2021-11-23 02:21:44,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 02:21:44,103 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) Word has length 52 [2021-11-23 02:21:44,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:44,107 INFO L225 Difference]: With dead ends: 783 [2021-11-23 02:21:44,107 INFO L226 Difference]: Without dead ends: 560 [2021-11-23 02:21:44,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2434 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=710, Invalid=6600, Unknown=0, NotChecked=0, Total=7310 [2021-11-23 02:21:44,113 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 571 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 1974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:44,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 380 Invalid, 1974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:21:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-11-23 02:21:44,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 445. [2021-11-23 02:21:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 297 states have (on average 1.2188552188552189) internal successors, (362), 331 states have internal predecessors, (362), 69 states have call successors, (69), 67 states have call predecessors, (69), 78 states have return successors, (115), 67 states have call predecessors, (115), 69 states have call successors, (115) [2021-11-23 02:21:44,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 546 transitions. [2021-11-23 02:21:44,169 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 546 transitions. Word has length 52 [2021-11-23 02:21:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:44,170 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 546 transitions. [2021-11-23 02:21:44,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 19 states have internal predecessors, (64), 7 states have call successors, (13), 5 states have call predecessors, (13), 9 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2021-11-23 02:21:44,170 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 546 transitions. [2021-11-23 02:21:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 02:21:44,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:44,173 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:21:44,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:44,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:21:44,389 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:44,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:44,390 INFO L85 PathProgramCache]: Analyzing trace with hash -830310142, now seen corresponding path program 1 times [2021-11-23 02:21:44,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:44,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426217984] [2021-11-23 02:21:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:44,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 02:21:44,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:21:44,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426217984] [2021-11-23 02:21:44,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426217984] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:21:44,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503637704] [2021-11-23 02:21:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:44,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:21:44,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:21:44,598 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:21:44,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:21:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:21:44,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-23 02:21:44,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:21:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:21:45,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:21:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 02:21:45,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503637704] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:21:45,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [296487783] [2021-11-23 02:21:45,402 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-11-23 02:21:45,402 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:21:45,403 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:21:45,403 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:21:45,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:21:50,129 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 26 for LOIs [2021-11-23 02:21:50,133 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 51 for LOIs [2021-11-23 02:21:50,460 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 38 for LOIs [2021-11-23 02:21:50,467 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 25 for LOIs [2021-11-23 02:21:50,476 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:21:54,290 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5809#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483648)) (<= 0 ~systemActive~0) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~1#1|) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= 0 ~methaneLevelCritical~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 0)) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= ~methaneLevelCritical~0 2147483647) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| ~methaneLevelCritical~0) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 0)) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 02:21:54,290 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:21:54,290 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:21:54,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 9] total 22 [2021-11-23 02:21:54,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352466562] [2021-11-23 02:21:54,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:21:54,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 02:21:54,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:21:54,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 02:21:54,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2179, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 02:21:54,293 INFO L87 Difference]: Start difference. First operand 445 states and 546 transitions. Second operand has 22 states, 20 states have (on average 5.35) internal successors, (107), 21 states have internal predecessors, (107), 12 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) [2021-11-23 02:21:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:21:56,424 INFO L93 Difference]: Finished difference Result 1174 states and 1532 transitions. [2021-11-23 02:21:56,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-23 02:21:56,425 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 5.35) internal successors, (107), 21 states have internal predecessors, (107), 12 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) Word has length 69 [2021-11-23 02:21:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:21:56,431 INFO L225 Difference]: With dead ends: 1174 [2021-11-23 02:21:56,431 INFO L226 Difference]: Without dead ends: 743 [2021-11-23 02:21:56,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 190 SyntacticMatches, 5 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3985 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1095, Invalid=10247, Unknown=0, NotChecked=0, Total=11342 [2021-11-23 02:21:56,438 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 450 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:21:56,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 934 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:21:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-11-23 02:21:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 498. [2021-11-23 02:21:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 333 states have (on average 1.2222222222222223) internal successors, (407), 369 states have internal predecessors, (407), 80 states have call successors, (80), 78 states have call predecessors, (80), 84 states have return successors, (136), 77 states have call predecessors, (136), 80 states have call successors, (136) [2021-11-23 02:21:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 623 transitions. [2021-11-23 02:21:56,510 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 623 transitions. Word has length 69 [2021-11-23 02:21:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:21:56,510 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 623 transitions. [2021-11-23 02:21:56,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 5.35) internal successors, (107), 21 states have internal predecessors, (107), 12 states have call successors, (22), 7 states have call predecessors, (22), 9 states have return successors, (21), 11 states have call predecessors, (21), 12 states have call successors, (21) [2021-11-23 02:21:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 623 transitions. [2021-11-23 02:21:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 02:21:56,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:21:56,515 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:21:56,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:21:56,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 02:21:56,729 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:21:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:21:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1150154572, now seen corresponding path program 1 times [2021-11-23 02:21:56,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:21:56,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167814620] [2021-11-23 02:21:56,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:21:56,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:21:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:21:56,787 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:21:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:21:56,871 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:21:56,871 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:21:56,872 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:21:56,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:21:56,877 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:21:56,880 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:21:56,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:21:56 BoogieIcfgContainer [2021-11-23 02:21:56,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:21:56,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:21:56,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:21:56,975 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:21:56,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:21:27" (3/4) ... [2021-11-23 02:21:56,977 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 02:21:57,107 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:21:57,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:21:57,108 INFO L158 Benchmark]: Toolchain (without parser) took 31162.53ms. Allocated memory was 104.9MB in the beginning and 436.2MB in the end (delta: 331.4MB). Free memory was 61.0MB in the beginning and 379.7MB in the end (delta: -318.7MB). Peak memory consumption was 11.4MB. Max. memory is 16.1GB. [2021-11-23 02:21:57,109 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:21:57,109 INFO L158 Benchmark]: CACSL2BoogieTranslator took 646.29ms. Allocated memory is still 104.9MB. Free memory was 60.8MB in the beginning and 70.7MB in the end (delta: -9.9MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-11-23 02:21:57,109 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.69ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 68.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:21:57,110 INFO L158 Benchmark]: Boogie Preprocessor took 57.16ms. Allocated memory is still 104.9MB. Free memory was 68.3MB in the beginning and 67.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:21:57,110 INFO L158 Benchmark]: RCFGBuilder took 606.63ms. Allocated memory is still 104.9MB. Free memory was 66.6MB in the beginning and 45.2MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 02:21:57,111 INFO L158 Benchmark]: TraceAbstraction took 29619.92ms. Allocated memory was 104.9MB in the beginning and 436.2MB in the end (delta: 331.4MB). Free memory was 44.8MB in the beginning and 389.1MB in the end (delta: -344.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:21:57,111 INFO L158 Benchmark]: Witness Printer took 133.29ms. Allocated memory is still 436.2MB. Free memory was 389.1MB in the beginning and 379.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:21:57,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 646.29ms. Allocated memory is still 104.9MB. Free memory was 60.8MB in the beginning and 70.7MB in the end (delta: -9.9MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.69ms. Allocated memory is still 104.9MB. Free memory was 70.7MB in the beginning and 68.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.16ms. Allocated memory is still 104.9MB. Free memory was 68.3MB in the beginning and 67.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 606.63ms. Allocated memory is still 104.9MB. Free memory was 66.6MB in the beginning and 45.2MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 29619.92ms. Allocated memory was 104.9MB in the beginning and 436.2MB in the end (delta: 331.4MB). Free memory was 44.8MB in the beginning and 389.1MB in the end (delta: -344.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 133.29ms. Allocated memory is still 436.2MB. Free memory was 389.1MB in the beginning and 379.7MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. 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 - CounterExampleResult [Line: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L142] int pumpRunning = 0; [L143] int systemActive = 1; [L374] int cleanupTimeShifts = 4; [L472] int methAndRunningLastTime ; [L512] int waterLevel = 1; [L513] int methaneLevelCritical = 0; [L775] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L449] int retValue_acc ; [L450] int tmp ; [L454] FCALL select_helpers() [L455] FCALL select_features() [L456] CALL, EXPR valid_product() [L365] int retValue_acc ; [L368] retValue_acc = 1 [L369] return (retValue_acc); [L456] RET, EXPR valid_product() [L456] tmp = valid_product() [L458] COND TRUE \read(tmp) [L460] FCALL setup() [L461] CALL runTest() [L442] CALL __utac_acc__Specification2_spec__1() [L477] methAndRunningLastTime = 0 [L442] RET __utac_acc__Specification2_spec__1() [L443] CALL test() [L66] int splverifierCounter ; [L67] int tmp ; [L68] int tmp___0 ; [L69] int tmp___1 ; [L70] int tmp___2 ; [L73] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L75] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L77] COND TRUE splverifierCounter < 4 [L83] tmp = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L87] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] COND TRUE waterLevel < 2 [L531] waterLevel = waterLevel + 1 [L87] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 [L107] RET startSystem() [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L150] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L182] COND TRUE ! pumpRunning [L184] CALL, EXPR isHighWaterLevel() [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L300] CALL, EXPR isHighWaterSensorDry() [L592] int retValue_acc ; [L595] COND FALSE !(waterLevel < 2) [L599] retValue_acc = 0 [L600] return (retValue_acc); [L300] RET, EXPR isHighWaterSensorDry() [L300] tmp = isHighWaterSensorDry() [L302] COND FALSE !(\read(tmp)) [L305] tmp___0 = 1 [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); [L184] RET, EXPR isHighWaterLevel() [L184] tmp = isHighWaterLevel() [L186] COND TRUE \read(tmp) [L188] CALL activatePump() [L213] int tmp ; [L217] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L242] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L217] RET, EXPR isMethaneAlarm() [L217] tmp = isMethaneAlarm() [L219] COND FALSE !(\read(tmp)) [L223] CALL activatePump__wrappee__highWaterSensor() [L207] pumpRunning = 1 [L223] RET activatePump__wrappee__highWaterSensor() [L188] RET activatePump() [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L487] tmp = isMethaneLevelCritical() [L489] COND FALSE !(\read(tmp)) [L505] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L165] RET __utac_acc__Specification2_spec__2() [L122] RET timeShift() VAL [__VERIFIER_nondet_int()=29, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=29, tmp___2=-1, waterLevel=2] [L75] COND TRUE 1 VAL [__VERIFIER_nondet_int()=29, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=29, tmp___2=-1, waterLevel=2] [L77] COND TRUE splverifierCounter < 4 [L83] tmp = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp)) VAL [__VERIFIER_nondet_int()=29, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=29, tmp___2=-1, waterLevel=2] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND TRUE \read(tmp___0) VAL [__VERIFIER_nondet_int()=29, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=29, tmp___2=-1, waterLevel=2] [L97] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L542] COND FALSE !(\read(methaneLevelCritical)) [L545] methaneLevelCritical = 1 [L97] RET changeMethaneLevel() VAL [__VERIFIER_nondet_int()=29, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=29, tmp___2=-1, waterLevel=2] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 [L107] RET startSystem() [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L150] COND TRUE \read(pumpRunning) [L152] CALL lowerWaterLevel() [L518] COND TRUE waterLevel > 0 [L519] waterLevel = waterLevel - 1 [L152] RET lowerWaterLevel() [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L182] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L197] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L487] tmp = isMethaneLevelCritical() [L489] COND TRUE \read(tmp) [L491] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L491] RET, EXPR isPumpRunning() [L491] tmp___0 = isPumpRunning() [L493] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L494] COND FALSE !(\read(methAndRunningLastTime)) [L499] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L165] RET __utac_acc__Specification2_spec__2() [L122] RET timeShift() VAL [__VERIFIER_nondet_int()=29, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=29, tmp___2=-2, waterLevel=1] [L75] COND TRUE 1 VAL [__VERIFIER_nondet_int()=29, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=29, tmp___2=-2, waterLevel=1] [L77] COND TRUE splverifierCounter < 4 [L83] tmp = __VERIFIER_nondet_int() [L85] COND FALSE !(\read(tmp)) VAL [__VERIFIER_nondet_int()=29, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=29, tmp___2=-2, waterLevel=1] [L93] tmp___0 = __VERIFIER_nondet_int() [L95] COND FALSE !(\read(tmp___0)) VAL [__VERIFIER_nondet_int()=29, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=29, tmp___2=-2, waterLevel=1] [L103] tmp___2 = __VERIFIER_nondet_int() [L105] COND TRUE \read(tmp___2) [L107] CALL startSystem() [L331] systemActive = 1 [L107] RET startSystem() [L122] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L150] COND TRUE \read(pumpRunning) [L152] CALL lowerWaterLevel() [L518] COND TRUE waterLevel > 0 [L519] waterLevel = waterLevel - 1 [L152] RET lowerWaterLevel() [L157] COND TRUE \read(systemActive) [L159] CALL processEnvironment() [L179] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L182] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L197] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L159] RET processEnvironment() [L165] CALL __utac_acc__Specification2_spec__2() [L482] int tmp ; [L483] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L487] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L487] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L487] tmp = isMethaneLevelCritical() [L489] COND TRUE \read(tmp) [L491] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L491] RET, EXPR isPumpRunning() [L491] tmp___0 = isPumpRunning() [L493] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L494] COND TRUE \read(methAndRunningLastTime) [L496] CALL __automaton_fail() [L54] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.5s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1298 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1282 mSDsluCounter, 1980 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1849 mSDsCounter, 828 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3644 IncrementalHoareTripleChecker+Invalid, 4472 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 828 mSolverCounterUnsat, 437 mSDtfsCounter, 3644 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 559 GetRequests, 334 SyntacticMatches, 7 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6449 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=498occurred in iteration=8, InterpolantAutomatonStates: 134, 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, 8 MinimizatonAttempts, 448 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 520 ConstructedInterpolants, 0 QuantifiedInterpolants, 1923 SizeOfPredicates, 19 NumberOfNonLiveVariables, 885 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 193/266 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 RESULT: Ultimate proved your program to be incorrect! [2021-11-23 02:21:57,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713cba6b-f884-4013-b54d-d4c57c564bf7/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE