./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product41_false-unreach-call_false-termination.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product41_false-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a2d3ce20e3d26ebf70024607ecab77b852f9995 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:09:15,802 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:09:15,803 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:09:15,809 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:09:15,809 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:09:15,810 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:09:15,810 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:09:15,811 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:09:15,812 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:09:15,812 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:09:15,812 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:09:15,812 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:09:15,813 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:09:15,813 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:09:15,814 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:09:15,814 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:09:15,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:09:15,815 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:09:15,816 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:09:15,817 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:09:15,818 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:09:15,818 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:09:15,819 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:09:15,819 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:09:15,819 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:09:15,820 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:09:15,820 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:09:15,821 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:09:15,821 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:09:15,822 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:09:15,822 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:09:15,822 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:09:15,822 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:09:15,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:09:15,823 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:09:15,823 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:09:15,823 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:09:15,830 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:09:15,830 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:09:15,831 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:09:15,831 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:09:15,831 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:09:15,831 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:09:15,831 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:09:15,831 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:09:15,832 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:09:15,832 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:09:15,832 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:09:15,832 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:09:15,832 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:09:15,832 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:09:15,832 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:09:15,832 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:09:15,832 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:09:15,833 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:09:15,833 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:09:15,833 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:09:15,833 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:09:15,833 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:09:15,833 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:09:15,833 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:09:15,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:09:15,833 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:09:15,833 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:09:15,834 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:09:15,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:09:15,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:09:15,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:09:15,834 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:09:15,834 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:09:15,834 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:09:15,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:09:15,834 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:09:15,834 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan 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(__VERIFIER_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 -> 5a2d3ce20e3d26ebf70024607ecab77b852f9995 [2018-12-09 19:09:15,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:09:15,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:09:15,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:09:15,860 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:09:15,860 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:09:15,860 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec1_product41_false-unreach-call_false-termination.cil.c [2018-12-09 19:09:15,898 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/data/09337af1c/729cdf8ead3646c5bb603f7eb3eec625/FLAGab14f938b [2018-12-09 19:09:16,211 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:09:16,211 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/sv-benchmarks/c/product-lines/minepump_spec1_product41_false-unreach-call_false-termination.cil.c [2018-12-09 19:09:16,218 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/data/09337af1c/729cdf8ead3646c5bb603f7eb3eec625/FLAGab14f938b [2018-12-09 19:09:16,226 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/data/09337af1c/729cdf8ead3646c5bb603f7eb3eec625 [2018-12-09 19:09:16,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:09:16,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:09:16,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:09:16,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:09:16,232 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:09:16,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2648fef5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16, skipping insertion in model container [2018-12-09 19:09:16,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:09:16,262 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:09:16,416 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:09:16,457 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:09:16,510 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:09:16,528 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:09:16,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16 WrapperNode [2018-12-09 19:09:16,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:09:16,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:09:16,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:09:16,530 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:09:16,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:09:16,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:09:16,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:09:16,558 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:09:16,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (1/1) ... [2018-12-09 19:09:16,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:09:16,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:09:16,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:09:16,581 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:09:16,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:09:16,615 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2018-12-09 19:09:16,615 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2018-12-09 19:09:16,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:09:16,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:09:16,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 19:09:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2018-12-09 19:09:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2018-12-09 19:09:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2018-12-09 19:09:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2018-12-09 19:09:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2018-12-09 19:09:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2018-12-09 19:09:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2018-12-09 19:09:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2018-12-09 19:09:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure test [2018-12-09 19:09:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2018-12-09 19:09:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2018-12-09 19:09:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2018-12-09 19:09:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2018-12-09 19:09:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2018-12-09 19:09:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2018-12-09 19:09:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2018-12-09 19:09:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2018-12-09 19:09:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2018-12-09 19:09:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2018-12-09 19:09:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2018-12-09 19:09:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2018-12-09 19:09:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2018-12-09 19:09:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2018-12-09 19:09:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2018-12-09 19:09:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2018-12-09 19:09:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2018-12-09 19:09:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2018-12-09 19:09:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2018-12-09 19:09:16,617 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2018-12-09 19:09:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2018-12-09 19:09:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2018-12-09 19:09:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2018-12-09 19:09:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2018-12-09 19:09:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2018-12-09 19:09:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2018-12-09 19:09:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2018-12-09 19:09:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-09 19:09:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:09:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:09:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2018-12-09 19:09:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2018-12-09 19:09:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2018-12-09 19:09:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2018-12-09 19:09:16,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:09:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:09:16,619 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2018-12-09 19:09:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2018-12-09 19:09:16,915 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:09:16,915 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 19:09:16,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:09:16 BoogieIcfgContainer [2018-12-09 19:09:16,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:09:16,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:09:16,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:09:16,918 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:09:16,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:09:16" (1/3) ... [2018-12-09 19:09:16,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524bdf6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:09:16, skipping insertion in model container [2018-12-09 19:09:16,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:09:16" (2/3) ... [2018-12-09 19:09:16,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524bdf6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:09:16, skipping insertion in model container [2018-12-09 19:09:16,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:09:16" (3/3) ... [2018-12-09 19:09:16,920 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product41_false-unreach-call_false-termination.cil.c [2018-12-09 19:09:16,926 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:09:16,931 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:09:16,940 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:09:16,957 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:09:16,957 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:09:16,958 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:09:16,958 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:09:16,958 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:09:16,958 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:09:16,958 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:09:16,958 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:09:16,969 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states. [2018-12-09 19:09:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-09 19:09:16,974 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:16,974 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:16,975 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:16,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:16,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1433604863, now seen corresponding path program 1 times [2018-12-09 19:09:16,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:17,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:17,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:17,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:17,008 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:09:17,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:09:17,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 19:09:17,119 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:17,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 19:09:17,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 19:09:17,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 19:09:17,131 INFO L87 Difference]: Start difference. First operand 130 states. Second operand 2 states. [2018-12-09 19:09:17,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:17,152 INFO L93 Difference]: Finished difference Result 234 states and 291 transitions. [2018-12-09 19:09:17,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 19:09:17,153 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2018-12-09 19:09:17,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:17,159 INFO L225 Difference]: With dead ends: 234 [2018-12-09 19:09:17,160 INFO L226 Difference]: Without dead ends: 117 [2018-12-09 19:09:17,162 INFO L631 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 [2018-12-09 19:09:17,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-12-09 19:09:17,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-12-09 19:09:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-12-09 19:09:17,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2018-12-09 19:09:17,192 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 46 [2018-12-09 19:09:17,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:17,193 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2018-12-09 19:09:17,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 19:09:17,193 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2018-12-09 19:09:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-09 19:09:17,194 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:17,194 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:17,195 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:17,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:17,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1125637497, now seen corresponding path program 1 times [2018-12-09 19:09:17,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:17,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:17,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:17,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:17,196 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:17,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:09:17,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:09:17,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 19:09:17,256 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:17,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-09 19:09:17,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 19:09:17,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 19:09:17,257 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand 3 states. [2018-12-09 19:09:17,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:17,269 INFO L93 Difference]: Finished difference Result 183 states and 213 transitions. [2018-12-09 19:09:17,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 19:09:17,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-12-09 19:09:17,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:17,270 INFO L225 Difference]: With dead ends: 183 [2018-12-09 19:09:17,270 INFO L226 Difference]: Without dead ends: 108 [2018-12-09 19:09:17,271 INFO L631 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 [2018-12-09 19:09:17,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-12-09 19:09:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-12-09 19:09:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-12-09 19:09:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2018-12-09 19:09:17,278 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 47 [2018-12-09 19:09:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:17,278 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2018-12-09 19:09:17,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-09 19:09:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2018-12-09 19:09:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-12-09 19:09:17,279 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:17,279 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:17,279 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:17,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:17,279 INFO L82 PathProgramCache]: Analyzing trace with hash -690378636, now seen corresponding path program 1 times [2018-12-09 19:09:17,279 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:17,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:17,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:17,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:17,280 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:09:17,348 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:09:17,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 19:09:17,348 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:17,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 19:09:17,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 19:09:17,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:09:17,349 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 7 states. [2018-12-09 19:09:17,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:17,486 INFO L93 Difference]: Finished difference Result 192 states and 227 transitions. [2018-12-09 19:09:17,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 19:09:17,487 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-12-09 19:09:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:17,487 INFO L225 Difference]: With dead ends: 192 [2018-12-09 19:09:17,488 INFO L226 Difference]: Without dead ends: 108 [2018-12-09 19:09:17,488 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-12-09 19:09:17,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-12-09 19:09:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-12-09 19:09:17,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-12-09 19:09:17,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2018-12-09 19:09:17,495 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 51 [2018-12-09 19:09:17,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:17,495 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2018-12-09 19:09:17,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 19:09:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2018-12-09 19:09:17,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-12-09 19:09:17,496 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:17,496 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:17,496 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:17,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:17,496 INFO L82 PathProgramCache]: Analyzing trace with hash 373656101, now seen corresponding path program 1 times [2018-12-09 19:09:17,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:17,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:17,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:17,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:17,497 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:09:17,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:09:17,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 19:09:17,548 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:17,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:09:17,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:09:17,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 19:09:17,549 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 5 states. [2018-12-09 19:09:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:17,803 INFO L93 Difference]: Finished difference Result 277 states and 333 transitions. [2018-12-09 19:09:17,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 19:09:17,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2018-12-09 19:09:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:17,806 INFO L225 Difference]: With dead ends: 277 [2018-12-09 19:09:17,806 INFO L226 Difference]: Without dead ends: 193 [2018-12-09 19:09:17,807 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:09:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-12-09 19:09:17,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 175. [2018-12-09 19:09:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-12-09 19:09:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2018-12-09 19:09:17,825 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 59 [2018-12-09 19:09:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:17,826 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2018-12-09 19:09:17,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:09:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2018-12-09 19:09:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-12-09 19:09:17,827 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:17,828 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:17,828 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:17,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:17,828 INFO L82 PathProgramCache]: Analyzing trace with hash -195947358, now seen corresponding path program 1 times [2018-12-09 19:09:17,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:17,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:17,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:17,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:17,829 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:17,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:09:17,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:09:17,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 19:09:17,905 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:17,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 19:09:17,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 19:09:17,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:09:17,906 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand 6 states. [2018-12-09 19:09:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:18,019 INFO L93 Difference]: Finished difference Result 462 states and 550 transitions. [2018-12-09 19:09:18,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 19:09:18,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2018-12-09 19:09:18,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:18,022 INFO L225 Difference]: With dead ends: 462 [2018-12-09 19:09:18,022 INFO L226 Difference]: Without dead ends: 311 [2018-12-09 19:09:18,023 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-09 19:09:18,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-12-09 19:09:18,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 305. [2018-12-09 19:09:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-12-09 19:09:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 352 transitions. [2018-12-09 19:09:18,042 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 352 transitions. Word has length 73 [2018-12-09 19:09:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:18,042 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 352 transitions. [2018-12-09 19:09:18,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 19:09:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 352 transitions. [2018-12-09 19:09:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-12-09 19:09:18,044 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:18,044 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:18,044 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:18,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:18,044 INFO L82 PathProgramCache]: Analyzing trace with hash 515949382, now seen corresponding path program 1 times [2018-12-09 19:09:18,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:18,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:18,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:18,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:18,046 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:09:18,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:09:18,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 19:09:18,101 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:18,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 19:09:18,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 19:09:18,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:09:18,102 INFO L87 Difference]: Start difference. First operand 305 states and 352 transitions. Second operand 7 states. [2018-12-09 19:09:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:18,418 INFO L93 Difference]: Finished difference Result 338 states and 401 transitions. [2018-12-09 19:09:18,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 19:09:18,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2018-12-09 19:09:18,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:18,421 INFO L225 Difference]: With dead ends: 338 [2018-12-09 19:09:18,421 INFO L226 Difference]: Without dead ends: 335 [2018-12-09 19:09:18,421 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2018-12-09 19:09:18,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-12-09 19:09:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 305. [2018-12-09 19:09:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-12-09 19:09:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 351 transitions. [2018-12-09 19:09:18,442 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 351 transitions. Word has length 77 [2018-12-09 19:09:18,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:18,442 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 351 transitions. [2018-12-09 19:09:18,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 19:09:18,442 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 351 transitions. [2018-12-09 19:09:18,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-12-09 19:09:18,443 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:18,444 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:18,444 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:18,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:18,444 INFO L82 PathProgramCache]: Analyzing trace with hash 928520475, now seen corresponding path program 1 times [2018-12-09 19:09:18,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:18,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:18,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:18,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:18,445 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 19:09:18,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:09:18,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 19:09:18,505 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:18,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 19:09:18,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 19:09:18,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 19:09:18,506 INFO L87 Difference]: Start difference. First operand 305 states and 351 transitions. Second operand 6 states. [2018-12-09 19:09:18,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:18,552 INFO L93 Difference]: Finished difference Result 600 states and 706 transitions. [2018-12-09 19:09:18,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 19:09:18,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-12-09 19:09:18,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:18,554 INFO L225 Difference]: With dead ends: 600 [2018-12-09 19:09:18,554 INFO L226 Difference]: Without dead ends: 319 [2018-12-09 19:09:18,555 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:09:18,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-12-09 19:09:18,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 315. [2018-12-09 19:09:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-12-09 19:09:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 361 transitions. [2018-12-09 19:09:18,573 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 361 transitions. Word has length 93 [2018-12-09 19:09:18,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:18,574 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 361 transitions. [2018-12-09 19:09:18,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 19:09:18,574 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 361 transitions. [2018-12-09 19:09:18,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-12-09 19:09:18,575 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:18,575 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:18,576 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:18,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:18,576 INFO L82 PathProgramCache]: Analyzing trace with hash 31127197, now seen corresponding path program 1 times [2018-12-09 19:09:18,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:18,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:18,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:18,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:18,578 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 19:09:18,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:09:18,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 19:09:18,644 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:18,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 19:09:18,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 19:09:18,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:09:18,644 INFO L87 Difference]: Start difference. First operand 315 states and 361 transitions. Second operand 8 states. [2018-12-09 19:09:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:18,670 INFO L93 Difference]: Finished difference Result 620 states and 728 transitions. [2018-12-09 19:09:18,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 19:09:18,671 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 93 [2018-12-09 19:09:18,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:18,672 INFO L225 Difference]: With dead ends: 620 [2018-12-09 19:09:18,672 INFO L226 Difference]: Without dead ends: 329 [2018-12-09 19:09:18,672 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 19:09:18,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2018-12-09 19:09:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 323. [2018-12-09 19:09:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-12-09 19:09:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 369 transitions. [2018-12-09 19:09:18,682 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 369 transitions. Word has length 93 [2018-12-09 19:09:18,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:18,683 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 369 transitions. [2018-12-09 19:09:18,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 19:09:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 369 transitions. [2018-12-09 19:09:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-12-09 19:09:18,684 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:18,684 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:18,684 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:18,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:18,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2002066654, now seen corresponding path program 1 times [2018-12-09 19:09:18,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:18,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:18,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:18,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:18,685 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 19:09:18,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 19:09:18,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 19:09:18,724 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:18,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 19:09:18,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 19:09:18,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:09:18,725 INFO L87 Difference]: Start difference. First operand 323 states and 369 transitions. Second operand 4 states. [2018-12-09 19:09:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:18,829 INFO L93 Difference]: Finished difference Result 943 states and 1136 transitions. [2018-12-09 19:09:18,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 19:09:18,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2018-12-09 19:09:18,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:18,832 INFO L225 Difference]: With dead ends: 943 [2018-12-09 19:09:18,832 INFO L226 Difference]: Without dead ends: 644 [2018-12-09 19:09:18,833 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 19:09:18,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2018-12-09 19:09:18,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 629. [2018-12-09 19:09:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2018-12-09 19:09:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 739 transitions. [2018-12-09 19:09:18,865 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 739 transitions. Word has length 93 [2018-12-09 19:09:18,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:18,865 INFO L480 AbstractCegarLoop]: Abstraction has 629 states and 739 transitions. [2018-12-09 19:09:18,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 19:09:18,865 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 739 transitions. [2018-12-09 19:09:18,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-12-09 19:09:18,867 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:18,867 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:18,867 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:18,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:18,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1002703548, now seen corresponding path program 1 times [2018-12-09 19:09:18,868 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:18,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:18,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:18,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:18,868 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 19:09:18,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:09:18,964 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:09:18,965 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 98 with the following transitions: [2018-12-09 19:09:18,967 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [7], [10], [18], [19], [20], [23], [25], [26], [27], [30], [32], [35], [45], [46], [50], [51], [53], [62], [66], [70], [73], [78], [81], [86], [89], [104], [105], [106], [107], [108], [110], [115], [118], [119], [121], [126], [128], [129], [134], [136], [137], [138], [170], [174], [188], [194], [198], [199], [202], [204], [207], [209], [212], [221], [222], [223], [224], [225], [226], [227], [228], [229], [231], [233], [234], [235], [236], [237], [238], [243], [244], [245], [246], [247], [251], [252], [253], [254], [255], [256], [263], [264], [265], [267], [268], [269], [271], [272], [273], [274], [275] [2018-12-09 19:09:18,997 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 19:09:18,997 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 19:09:19,337 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 19:09:19,338 INFO L272 AbstractInterpreter]: Visited 95 different actions 97 times. Never merged. Never widened. Performed 3114 root evaluator evaluations with a maximum evaluation depth of 3. Performed 3114 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-12-09 19:09:19,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:19,343 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 19:09:19,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:09:19,343 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:09:19,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:19,352 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 19:09:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:19,429 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:09:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 19:09:19,579 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:09:19,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 19:09:19,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-09 19:09:19,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 9] total 25 [2018-12-09 19:09:19,976 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:19,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 19:09:19,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 19:09:19,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-12-09 19:09:19,977 INFO L87 Difference]: Start difference. First operand 629 states and 739 transitions. Second operand 8 states. [2018-12-09 19:09:20,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:20,115 INFO L93 Difference]: Finished difference Result 1208 states and 1429 transitions. [2018-12-09 19:09:20,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 19:09:20,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 97 [2018-12-09 19:09:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:20,118 INFO L225 Difference]: With dead ends: 1208 [2018-12-09 19:09:20,118 INFO L226 Difference]: Without dead ends: 603 [2018-12-09 19:09:20,120 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 178 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2018-12-09 19:09:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2018-12-09 19:09:20,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2018-12-09 19:09:20,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2018-12-09 19:09:20,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 696 transitions. [2018-12-09 19:09:20,150 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 696 transitions. Word has length 97 [2018-12-09 19:09:20,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:20,150 INFO L480 AbstractCegarLoop]: Abstraction has 603 states and 696 transitions. [2018-12-09 19:09:20,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 19:09:20,150 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 696 transitions. [2018-12-09 19:09:20,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-12-09 19:09:20,153 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:20,153 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:20,153 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:20,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:20,153 INFO L82 PathProgramCache]: Analyzing trace with hash -239107615, now seen corresponding path program 1 times [2018-12-09 19:09:20,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:20,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:20,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:20,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:20,154 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 19:09:20,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:09:20,207 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 19:09:20,208 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-12-09 19:09:20,208 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [7], [10], [18], [19], [20], [23], [25], [26], [27], [30], [32], [35], [42], [45], [46], [50], [51], [52], [53], [62], [66], [70], [73], [78], [81], [84], [86], [89], [104], [105], [106], [107], [108], [110], [115], [118], [119], [121], [126], [128], [129], [134], [136], [137], [138], [167], [170], [174], [180], [183], [187], [188], [194], [198], [199], [202], [204], [207], [209], [212], [218], [220], [221], [222], [223], [224], [225], [226], [227], [228], [229], [231], [233], [234], [235], [236], [237], [238], [241], [242], [243], [244], [245], [246], [247], [248], [251], [252], [253], [254], [255], [256], [261], [262], [263], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275] [2018-12-09 19:09:20,211 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 19:09:20,211 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 19:09:21,018 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 19:09:21,019 INFO L272 AbstractInterpreter]: Visited 110 different actions 432 times. Merged at 16 different actions 35 times. Never widened. Performed 16991 root evaluator evaluations with a maximum evaluation depth of 3. Performed 16991 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 7 fixpoints after 3 different actions. Largest state had 132 variables. [2018-12-09 19:09:21,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:21,021 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 19:09:21,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 19:09:21,021 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 19:09:21,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:21,027 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 19:09:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 19:09:21,089 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 19:09:21,103 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-09 19:09:21,103 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 19:09:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 19:09:21,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-09 19:09:21,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-12-09 19:09:21,230 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 19:09:21,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 19:09:21,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 19:09:21,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-12-09 19:09:21,231 INFO L87 Difference]: Start difference. First operand 603 states and 696 transitions. Second operand 5 states. [2018-12-09 19:09:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 19:09:21,493 INFO L93 Difference]: Finished difference Result 1272 states and 1555 transitions. [2018-12-09 19:09:21,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 19:09:21,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2018-12-09 19:09:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 19:09:21,496 INFO L225 Difference]: With dead ends: 1272 [2018-12-09 19:09:21,497 INFO L226 Difference]: Without dead ends: 803 [2018-12-09 19:09:21,498 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 272 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-12-09 19:09:21,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2018-12-09 19:09:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 605. [2018-12-09 19:09:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2018-12-09 19:09:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 696 transitions. [2018-12-09 19:09:21,530 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 696 transitions. Word has length 136 [2018-12-09 19:09:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 19:09:21,530 INFO L480 AbstractCegarLoop]: Abstraction has 605 states and 696 transitions. [2018-12-09 19:09:21,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 19:09:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 696 transitions. [2018-12-09 19:09:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-12-09 19:09:21,532 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:09:21,532 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:09:21,532 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:09:21,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:09:21,533 INFO L82 PathProgramCache]: Analyzing trace with hash -890713093, now seen corresponding path program 1 times [2018-12-09 19:09:21,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:09:21,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:21,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:09:21,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:09:21,534 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:09:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:09:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:09:21,612 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 19:09:21,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:09:21 BoogieIcfgContainer [2018-12-09 19:09:21,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:09:21,694 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:09:21,694 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:09:21,695 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:09:21,695 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:09:16" (3/4) ... [2018-12-09 19:09:21,697 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 19:09:21,785 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8045f806-2edb-47ac-ac5a-81a65dffd9b9/bin-2019/utaipan/witness.graphml [2018-12-09 19:09:21,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:09:21,786 INFO L168 Benchmark]: Toolchain (without parser) took 5558.51 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 414.7 MB). Free memory was 945.9 MB in the beginning and 1.4 GB in the end (delta: -439.9 MB). Peak memory consumption was 449.6 MB. Max. memory is 11.5 GB. [2018-12-09 19:09:21,787 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:09:21,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-12-09 19:09:21,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:09:21,787 INFO L168 Benchmark]: Boogie Preprocessor took 22.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:09:21,788 INFO L168 Benchmark]: RCFGBuilder took 335.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:09:21,788 INFO L168 Benchmark]: TraceAbstraction took 4778.07 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 170.4 MB). Free memory was 1.1 GB in the beginning and 826.1 MB in the end (delta: 243.8 MB). Peak memory consumption was 414.2 MB. Max. memory is 11.5 GB. [2018-12-09 19:09:21,788 INFO L168 Benchmark]: Witness Printer took 91.19 ms. Allocated memory was 1.3 GB in the beginning and 1.4 GB in the end (delta: 107.0 MB). Free memory was 826.1 MB in the beginning and 1.4 GB in the end (delta: -559.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-12-09 19:09:21,789 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 300.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 945.9 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 335.01 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4778.07 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 170.4 MB). Free memory was 1.1 GB in the beginning and 826.1 MB in the end (delta: 243.8 MB). Peak memory consumption was 414.2 MB. Max. memory is 11.5 GB. * Witness Printer took 91.19 ms. Allocated memory was 1.3 GB in the beginning and 1.4 GB in the end (delta: 107.0 MB). Free memory was 826.1 MB in the beginning and 1.4 GB in the end (delta: -559.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 887]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L480] int waterLevel = 1; [L481] int methaneLevelCritical = 0; [L578] int pumpRunning = 0; [L579] int systemActive = 1; [L749] int cleanupTimeShifts = 4; VAL [\old(cleanupTimeShifts)=193, \old(head)=200, \old(head)=175, \old(methaneLevelCritical)=148, \old(pumpRunning)=140, \old(systemActive)=139, \old(waterLevel)=141, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L825] int retValue_acc ; [L826] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L830] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L831] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L832] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L874] int retValue_acc ; [L877] retValue_acc = 1 [L878] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L832] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L832] tmp = valid_product() [L834] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L836] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L837] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L816] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L411] int splverifierCounter ; [L412] int tmp ; [L413] int tmp___0 ; [L414] int tmp___1 ; [L415] int tmp___2 ; [L418] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L420] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L422] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L428] tmp = __VERIFIER_nondet_int() [L430] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L432] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L498] COND TRUE waterLevel < 2 [L499] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L432] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND FALSE !(\read(tmp___0)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L463] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L586] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L593] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L595] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L615] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L618] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L620] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L730] int retValue_acc ; [L731] int tmp ; [L732] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L736] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L560] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L563] COND FALSE !(waterLevel < 2) [L567] retValue_acc = 0 [L568] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L736] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L736] tmp = isHighWaterSensorDry() [L738] COND FALSE !(\read(tmp)) [L741] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L743] retValue_acc = tmp___0 [L744] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L620] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L620] tmp = isHighWaterLevel() [L622] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L624] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L649] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L653] CALL, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L674] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L678] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L678] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L678] retValue_acc = isMethaneLevelCritical() [L680] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L653] RET, EXPR isMethaneAlarm() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L653] tmp = isMethaneAlarm() [L655] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, waterLevel=2] [L659] CALL activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L643] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L659] RET activatePump__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L624] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L595] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L601] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L893] int tmp ; [L894] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L898] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=2] [L898] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L898] tmp = isMethaneLevelCritical() [L900] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L601] RET __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L463] RET timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L420] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L422] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___2=1, waterLevel=2] [L428] tmp = __VERIFIER_nondet_int() [L430] COND FALSE !(\read(tmp)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L438] tmp___0 = __VERIFIER_nondet_int() [L440] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=2] [L442] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L510] COND FALSE !(\read(methaneLevelCritical)) [L513] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L442] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=2] [L448] tmp___2 = __VERIFIER_nondet_int() [L450] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___2=1, waterLevel=2] [L463] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L586] COND TRUE \read(pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L588] CALL lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L486] COND TRUE waterLevel > 0 [L487] waterLevel = waterLevel - 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L588] RET lowerWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L593] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L595] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L615] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L618] COND FALSE !(! pumpRunning) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L633] FCALL processEnvironment__wrappee__base() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L595] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L601] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L893] int tmp ; [L894] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L898] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L519] int retValue_acc ; [L522] retValue_acc = methaneLevelCritical [L523] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L898] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L898] tmp = isMethaneLevelCritical() [L900] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L902] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L685] int retValue_acc ; [L688] retValue_acc = pumpRunning [L689] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L902] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L902] tmp___0 = isPumpRunning() [L904] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L906] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L887] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 25 procedures, 130 locations, 1 error locations. UNSAFE Result, 4.7s OverallTime, 12 OverallIterations, 3 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1613 SDtfs, 889 SDslu, 3117 SDs, 0 SdLazy, 1358 SolverSat, 302 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 573 GetRequests, 488 SyntacticMatches, 9 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=629occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.1s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 277 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1230 NumberOfCodeBlocks, 1230 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 1316 ConstructedInterpolants, 0 QuantifiedInterpolants, 205616 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1543 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 112/120 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...