./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product53_true-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_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product53_true-unreach-call_false-termination.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/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 ae33dcba0147a107c551c432e2bfc2c49f1e3070 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 16:00:16,610 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 16:00:16,611 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 16:00:16,617 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 16:00:16,617 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 16:00:16,618 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 16:00:16,619 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 16:00:16,620 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 16:00:16,621 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 16:00:16,622 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 16:00:16,623 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 16:00:16,623 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 16:00:16,623 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 16:00:16,624 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 16:00:16,625 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 16:00:16,625 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 16:00:16,626 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 16:00:16,627 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 16:00:16,628 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 16:00:16,630 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 16:00:16,630 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 16:00:16,631 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 16:00:16,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 16:00:16,633 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 16:00:16,633 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 16:00:16,634 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 16:00:16,635 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 16:00:16,635 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 16:00:16,636 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 16:00:16,636 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 16:00:16,637 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 16:00:16,637 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 16:00:16,637 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 16:00:16,637 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 16:00:16,638 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 16:00:16,638 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 16:00:16,638 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 16:00:16,646 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 16:00:16,647 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 16:00:16,647 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 16:00:16,647 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 16:00:16,648 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 16:00:16,648 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 16:00:16,648 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 16:00:16,648 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 16:00:16,648 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 16:00:16,648 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 16:00:16,649 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 16:00:16,649 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 16:00:16,649 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 16:00:16,649 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 16:00:16,650 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 16:00:16,650 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 16:00:16,650 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 16:00:16,650 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 16:00:16,650 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 16:00:16,650 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 16:00:16,650 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 16:00:16,650 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 16:00:16,650 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 16:00:16,650 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 16:00:16,650 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 16:00:16,651 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 16:00:16,651 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 16:00:16,651 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 16:00:16,651 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 16:00:16,651 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 16:00:16,651 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 16:00:16,651 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 16:00:16,651 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 16:00:16,651 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 16:00:16,651 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 16:00:16,651 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 16:00:16,651 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_ad572355-1a93-44c3-9026-5a92697371f4/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 -> ae33dcba0147a107c551c432e2bfc2c49f1e3070 [2018-12-08 16:00:16,672 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 16:00:16,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 16:00:16,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 16:00:16,682 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 16:00:16,682 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 16:00:16,683 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product53_true-unreach-call_false-termination.cil.c [2018-12-08 16:00:16,720 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/data/cf0972351/8d29ad60f081435386a4cf1398b50827/FLAGc23474648 [2018-12-08 16:00:17,153 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 16:00:17,153 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/sv-benchmarks/c/product-lines/minepump_spec4_product53_true-unreach-call_false-termination.cil.c [2018-12-08 16:00:17,159 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/data/cf0972351/8d29ad60f081435386a4cf1398b50827/FLAGc23474648 [2018-12-08 16:00:17,166 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/data/cf0972351/8d29ad60f081435386a4cf1398b50827 [2018-12-08 16:00:17,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 16:00:17,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 16:00:17,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 16:00:17,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 16:00:17,171 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 16:00:17,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@354f5439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17, skipping insertion in model container [2018-12-08 16:00:17,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 16:00:17,197 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 16:00:17,341 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:00:17,383 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 16:00:17,423 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 16:00:17,437 INFO L195 MainTranslator]: Completed translation [2018-12-08 16:00:17,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17 WrapperNode [2018-12-08 16:00:17,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 16:00:17,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 16:00:17,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 16:00:17,438 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 16:00:17,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 16:00:17,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 16:00:17,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 16:00:17,458 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 16:00:17,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (1/1) ... [2018-12-08 16:00:17,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 16:00:17,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 16:00:17,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 16:00:17,481 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 16:00:17,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/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 [2018-12-08 16:00:17,522 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2018-12-08 16:00:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2018-12-08 16:00:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2018-12-08 16:00:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2018-12-08 16:00:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 16:00:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 16:00:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2018-12-08 16:00:17,523 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2018-12-08 16:00:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 16:00:17,523 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2018-12-08 16:00:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2018-12-08 16:00:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2018-12-08 16:00:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2018-12-08 16:00:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2018-12-08 16:00:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2018-12-08 16:00:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2018-12-08 16:00:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2018-12-08 16:00:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure test [2018-12-08 16:00:17,524 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2018-12-08 16:00:17,524 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2018-12-08 16:00:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2018-12-08 16:00:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2018-12-08 16:00:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2018-12-08 16:00:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2018-12-08 16:00:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2018-12-08 16:00:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2018-12-08 16:00:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2018-12-08 16:00:17,525 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2018-12-08 16:00:17,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2018-12-08 16:00:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2018-12-08 16:00:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2018-12-08 16:00:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2018-12-08 16:00:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2018-12-08 16:00:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2018-12-08 16:00:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2018-12-08 16:00:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2018-12-08 16:00:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2018-12-08 16:00:17,526 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2018-12-08 16:00:17,526 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2018-12-08 16:00:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2018-12-08 16:00:17,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2018-12-08 16:00:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2018-12-08 16:00:17,527 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2018-12-08 16:00:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2018-12-08 16:00:17,527 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2018-12-08 16:00:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2018-12-08 16:00:17,527 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2018-12-08 16:00:17,527 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2018-12-08 16:00:17,527 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2018-12-08 16:00:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2018-12-08 16:00:17,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2018-12-08 16:00:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2018-12-08 16:00:17,528 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2018-12-08 16:00:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2018-12-08 16:00:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 16:00:17,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 16:00:17,528 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2018-12-08 16:00:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2018-12-08 16:00:17,529 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2018-12-08 16:00:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2018-12-08 16:00:17,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 16:00:17,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 16:00:17,825 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 16:00:17,826 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-08 16:00:17,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:00:17 BoogieIcfgContainer [2018-12-08 16:00:17,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 16:00:17,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 16:00:17,827 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 16:00:17,829 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 16:00:17,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 04:00:17" (1/3) ... [2018-12-08 16:00:17,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a27ca53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:00:17, skipping insertion in model container [2018-12-08 16:00:17,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 04:00:17" (2/3) ... [2018-12-08 16:00:17,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a27ca53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 04:00:17, skipping insertion in model container [2018-12-08 16:00:17,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:00:17" (3/3) ... [2018-12-08 16:00:17,831 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product53_true-unreach-call_false-termination.cil.c [2018-12-08 16:00:17,837 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 16:00:17,842 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 16:00:17,852 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 16:00:17,871 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 16:00:17,871 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 16:00:17,871 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 16:00:17,871 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 16:00:17,871 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 16:00:17,871 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 16:00:17,871 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 16:00:17,871 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 16:00:17,883 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2018-12-08 16:00:17,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-08 16:00:17,889 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:17,889 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] [2018-12-08 16:00:17,891 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:17,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:17,894 INFO L82 PathProgramCache]: Analyzing trace with hash 697670877, now seen corresponding path program 1 times [2018-12-08 16:00:17,895 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:17,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:17,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:17,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:17,925 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:00:18,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:00:18,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 16:00:18,040 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:18,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 16:00:18,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 16:00:18,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 16:00:18,053 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 2 states. [2018-12-08 16:00:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:18,079 INFO L93 Difference]: Finished difference Result 292 states and 361 transitions. [2018-12-08 16:00:18,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 16:00:18,080 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2018-12-08 16:00:18,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:18,087 INFO L225 Difference]: With dead ends: 292 [2018-12-08 16:00:18,087 INFO L226 Difference]: Without dead ends: 146 [2018-12-08 16:00:18,090 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 [2018-12-08 16:00:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-12-08 16:00:18,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-12-08 16:00:18,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-12-08 16:00:18,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2018-12-08 16:00:18,121 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 46 [2018-12-08 16:00:18,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:18,121 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2018-12-08 16:00:18,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 16:00:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2018-12-08 16:00:18,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-12-08 16:00:18,123 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:18,123 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] [2018-12-08 16:00:18,124 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:18,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:18,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1056936711, now seen corresponding path program 1 times [2018-12-08 16:00:18,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:18,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:18,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:18,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:18,125 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:00:18,176 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:00:18,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 16:00:18,176 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:18,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 16:00:18,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 16:00:18,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 16:00:18,177 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 3 states. [2018-12-08 16:00:18,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:18,190 INFO L93 Difference]: Finished difference Result 241 states and 283 transitions. [2018-12-08 16:00:18,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 16:00:18,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-12-08 16:00:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:18,192 INFO L225 Difference]: With dead ends: 241 [2018-12-08 16:00:18,192 INFO L226 Difference]: Without dead ends: 137 [2018-12-08 16:00:18,193 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 [2018-12-08 16:00:18,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-12-08 16:00:18,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-12-08 16:00:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-12-08 16:00:18,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2018-12-08 16:00:18,200 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 47 [2018-12-08 16:00:18,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:18,201 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2018-12-08 16:00:18,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 16:00:18,201 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2018-12-08 16:00:18,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-12-08 16:00:18,202 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:18,202 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] [2018-12-08 16:00:18,202 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:18,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:18,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1110661237, now seen corresponding path program 1 times [2018-12-08 16:00:18,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:18,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:18,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:18,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:18,203 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:00:18,270 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:00:18,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-08 16:00:18,270 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:18,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 16:00:18,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 16:00:18,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-12-08 16:00:18,271 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 7 states. [2018-12-08 16:00:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:18,416 INFO L93 Difference]: Finished difference Result 250 states and 297 transitions. [2018-12-08 16:00:18,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 16:00:18,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2018-12-08 16:00:18,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:18,418 INFO L225 Difference]: With dead ends: 250 [2018-12-08 16:00:18,418 INFO L226 Difference]: Without dead ends: 137 [2018-12-08 16:00:18,419 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 [2018-12-08 16:00:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-12-08 16:00:18,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2018-12-08 16:00:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-12-08 16:00:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2018-12-08 16:00:18,430 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 51 [2018-12-08 16:00:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:18,430 INFO L480 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2018-12-08 16:00:18,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 16:00:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2018-12-08 16:00:18,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-12-08 16:00:18,432 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:18,432 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] [2018-12-08 16:00:18,433 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:18,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:18,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1943254263, now seen corresponding path program 1 times [2018-12-08 16:00:18,433 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:18,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:18,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:18,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:18,434 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:00:18,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:00:18,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 16:00:18,510 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:18,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 16:00:18,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 16:00:18,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 16:00:18,511 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 5 states. [2018-12-08 16:00:18,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:18,765 INFO L93 Difference]: Finished difference Result 352 states and 425 transitions. [2018-12-08 16:00:18,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 16:00:18,765 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2018-12-08 16:00:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:18,766 INFO L225 Difference]: With dead ends: 352 [2018-12-08 16:00:18,766 INFO L226 Difference]: Without dead ends: 239 [2018-12-08 16:00:18,767 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-08 16:00:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-12-08 16:00:18,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 221. [2018-12-08 16:00:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-12-08 16:00:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 250 transitions. [2018-12-08 16:00:18,780 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 250 transitions. Word has length 69 [2018-12-08 16:00:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:18,780 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 250 transitions. [2018-12-08 16:00:18,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 16:00:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 250 transitions. [2018-12-08 16:00:18,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-12-08 16:00:18,781 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:18,782 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, 1, 1, 1, 1, 1, 1] [2018-12-08 16:00:18,782 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:18,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:18,782 INFO L82 PathProgramCache]: Analyzing trace with hash -215738354, now seen corresponding path program 1 times [2018-12-08 16:00:18,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:18,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:18,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:18,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:18,783 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:00:18,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:00:18,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-08 16:00:18,859 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:18,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-08 16:00:18,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-08 16:00:18,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-12-08 16:00:18,860 INFO L87 Difference]: Start difference. First operand 221 states and 250 transitions. Second operand 10 states. [2018-12-08 16:00:19,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:19,133 INFO L93 Difference]: Finished difference Result 703 states and 867 transitions. [2018-12-08 16:00:19,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-08 16:00:19,133 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2018-12-08 16:00:19,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:19,135 INFO L225 Difference]: With dead ends: 703 [2018-12-08 16:00:19,135 INFO L226 Difference]: Without dead ends: 506 [2018-12-08 16:00:19,136 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2018-12-08 16:00:19,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2018-12-08 16:00:19,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 496. [2018-12-08 16:00:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 496 states. [2018-12-08 16:00:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 582 transitions. [2018-12-08 16:00:19,164 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 582 transitions. Word has length 83 [2018-12-08 16:00:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:19,165 INFO L480 AbstractCegarLoop]: Abstraction has 496 states and 582 transitions. [2018-12-08 16:00:19,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-08 16:00:19,165 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 582 transitions. [2018-12-08 16:00:19,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-12-08 16:00:19,167 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:19,168 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-12-08 16:00:19,168 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:19,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:19,168 INFO L82 PathProgramCache]: Analyzing trace with hash -243545585, now seen corresponding path program 1 times [2018-12-08 16:00:19,168 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:19,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:19,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:19,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:19,169 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 16:00:19,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:19,225 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:19,226 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-12-08 16:00:19,227 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [50], [53], [55], [56], [57], [58], [59], [62], [64], [65], [68], [70], [73], [80], [83], [85], [94], [98], [102], [108], [110], [116], [118], [121], [138], [139], [140], [141], [142], [143], [144], [146], [149], [153], [154], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [235], [243], [246], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [283], [285], [286], [287], [288], [289], [290], [293], [294], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [333], [334] [2018-12-08 16:00:19,252 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:19,253 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:19,497 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:00:19,498 INFO L272 AbstractInterpreter]: Visited 60 different actions 60 times. Never merged. Never widened. Performed 2073 root evaluator evaluations with a maximum evaluation depth of 3. Performed 2073 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-12-08 16:00:19,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:19,503 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:00:19,659 INFO L227 lantSequenceWeakener]: Weakened 70 states. On average, predicates are now at 96.45% of their original sizes. [2018-12-08 16:00:19,659 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:00:19,742 INFO L418 sIntCurrentIteration]: We unified 130 AI predicates to 130 [2018-12-08 16:00:19,742 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:00:19,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:00:19,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-12-08 16:00:19,743 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:19,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-08 16:00:19,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-08 16:00:19,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-12-08 16:00:19,744 INFO L87 Difference]: Start difference. First operand 496 states and 582 transitions. Second operand 13 states. [2018-12-08 16:00:20,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:20,884 INFO L93 Difference]: Finished difference Result 1028 states and 1219 transitions. [2018-12-08 16:00:20,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-08 16:00:20,884 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 131 [2018-12-08 16:00:20,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:20,886 INFO L225 Difference]: With dead ends: 1028 [2018-12-08 16:00:20,886 INFO L226 Difference]: Without dead ends: 556 [2018-12-08 16:00:20,887 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 137 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-12-08 16:00:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2018-12-08 16:00:20,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 554. [2018-12-08 16:00:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2018-12-08 16:00:20,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 645 transitions. [2018-12-08 16:00:20,913 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 645 transitions. Word has length 131 [2018-12-08 16:00:20,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:20,914 INFO L480 AbstractCegarLoop]: Abstraction has 554 states and 645 transitions. [2018-12-08 16:00:20,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-08 16:00:20,914 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 645 transitions. [2018-12-08 16:00:20,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-12-08 16:00:20,916 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:20,916 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:00:20,917 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:20,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:20,917 INFO L82 PathProgramCache]: Analyzing trace with hash -539723949, now seen corresponding path program 1 times [2018-12-08 16:00:20,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:20,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:20,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:20,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:20,919 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 16:00:20,959 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:20,959 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:20,959 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-12-08 16:00:20,960 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [50], [53], [55], [56], [57], [58], [59], [62], [64], [65], [68], [70], [73], [80], [83], [85], [94], [98], [102], [108], [110], [113], [116], [118], [121], [138], [139], [140], [141], [142], [143], [144], [146], [149], [153], [154], [159], [161], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [235], [243], [246], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [283], [285], [286], [287], [288], [289], [290], [293], [294], [297], [298], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [333], [334] [2018-12-08 16:00:20,963 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:20,963 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:21,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:00:21,197 INFO L272 AbstractInterpreter]: Visited 65 different actions 95 times. Merged at 3 different actions 3 times. Never widened. Performed 5273 root evaluator evaluations with a maximum evaluation depth of 3. Performed 5273 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-12-08 16:00:21,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:21,202 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:00:21,363 INFO L227 lantSequenceWeakener]: Weakened 74 states. On average, predicates are now at 96.45% of their original sizes. [2018-12-08 16:00:21,363 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:00:21,465 INFO L418 sIntCurrentIteration]: We unified 134 AI predicates to 134 [2018-12-08 16:00:21,465 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:00:21,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:00:21,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-12-08 16:00:21,465 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:21,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-08 16:00:21,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-08 16:00:21,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-12-08 16:00:21,466 INFO L87 Difference]: Start difference. First operand 554 states and 645 transitions. Second operand 16 states. [2018-12-08 16:00:23,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:23,063 INFO L93 Difference]: Finished difference Result 1047 states and 1240 transitions. [2018-12-08 16:00:23,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-08 16:00:23,063 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 135 [2018-12-08 16:00:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:23,065 INFO L225 Difference]: With dead ends: 1047 [2018-12-08 16:00:23,065 INFO L226 Difference]: Without dead ends: 575 [2018-12-08 16:00:23,066 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 149 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=169, Invalid=761, Unknown=0, NotChecked=0, Total=930 [2018-12-08 16:00:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2018-12-08 16:00:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 515. [2018-12-08 16:00:23,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-12-08 16:00:23,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 590 transitions. [2018-12-08 16:00:23,082 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 590 transitions. Word has length 135 [2018-12-08 16:00:23,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:23,083 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 590 transitions. [2018-12-08 16:00:23,083 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-08 16:00:23,083 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 590 transitions. [2018-12-08 16:00:23,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-12-08 16:00:23,084 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:23,084 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:00:23,084 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:23,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:23,084 INFO L82 PathProgramCache]: Analyzing trace with hash -482528267, now seen corresponding path program 1 times [2018-12-08 16:00:23,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:23,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:23,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:23,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:23,085 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 16:00:23,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:23,121 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:23,121 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-12-08 16:00:23,121 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [50], [53], [55], [56], [57], [58], [59], [62], [64], [65], [68], [70], [73], [80], [83], [85], [94], [98], [102], [105], [108], [110], [116], [118], [121], [138], [139], [140], [141], [142], [143], [144], [146], [149], [153], [154], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [235], [238], [242], [243], [246], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [283], [285], [286], [287], [288], [289], [290], [293], [294], [295], [296], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [333], [334] [2018-12-08 16:00:23,123 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:23,123 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:23,271 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:00:23,271 INFO L272 AbstractInterpreter]: Visited 65 different actions 97 times. Merged at 5 different actions 5 times. Never widened. Performed 5284 root evaluator evaluations with a maximum evaluation depth of 3. Performed 5284 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-12-08 16:00:23,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:23,284 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:00:23,426 INFO L227 lantSequenceWeakener]: Weakened 74 states. On average, predicates are now at 96.45% of their original sizes. [2018-12-08 16:00:23,426 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:00:23,513 INFO L418 sIntCurrentIteration]: We unified 134 AI predicates to 134 [2018-12-08 16:00:23,513 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:00:23,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:00:23,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-12-08 16:00:23,513 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:23,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-08 16:00:23,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-08 16:00:23,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-12-08 16:00:23,514 INFO L87 Difference]: Start difference. First operand 515 states and 590 transitions. Second operand 16 states. [2018-12-08 16:00:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:25,392 INFO L93 Difference]: Finished difference Result 1255 states and 1597 transitions. [2018-12-08 16:00:25,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-08 16:00:25,392 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 135 [2018-12-08 16:00:25,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:25,395 INFO L225 Difference]: With dead ends: 1255 [2018-12-08 16:00:25,395 INFO L226 Difference]: Without dead ends: 886 [2018-12-08 16:00:25,397 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 142 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-12-08 16:00:25,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2018-12-08 16:00:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 843. [2018-12-08 16:00:25,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2018-12-08 16:00:25,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 993 transitions. [2018-12-08 16:00:25,436 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 993 transitions. Word has length 135 [2018-12-08 16:00:25,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:25,436 INFO L480 AbstractCegarLoop]: Abstraction has 843 states and 993 transitions. [2018-12-08 16:00:25,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-08 16:00:25,436 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 993 transitions. [2018-12-08 16:00:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-12-08 16:00:25,438 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:25,438 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:00:25,438 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:25,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1967583818, now seen corresponding path program 1 times [2018-12-08 16:00:25,438 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:25,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:25,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:25,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:25,439 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 16:00:25,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:25,481 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:25,481 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-12-08 16:00:25,482 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [50], [53], [55], [56], [57], [58], [59], [63], [64], [65], [68], [70], [73], [80], [83], [85], [94], [98], [102], [105], [108], [110], [116], [118], [121], [138], [139], [140], [141], [142], [143], [144], [146], [149], [153], [154], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [235], [238], [242], [243], [246], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [283], [285], [286], [287], [288], [289], [290], [293], [294], [295], [296], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [333], [334] [2018-12-08 16:00:25,483 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:25,483 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:25,625 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:00:25,625 INFO L272 AbstractInterpreter]: Visited 60 different actions 83 times. Merged at 5 different actions 5 times. Never widened. Performed 5242 root evaluator evaluations with a maximum evaluation depth of 3. Performed 5242 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-12-08 16:00:25,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:25,638 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:00:25,755 INFO L227 lantSequenceWeakener]: Weakened 69 states. On average, predicates are now at 96.44% of their original sizes. [2018-12-08 16:00:25,755 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:00:25,813 INFO L418 sIntCurrentIteration]: We unified 134 AI predicates to 134 [2018-12-08 16:00:25,813 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:00:25,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:00:25,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2018-12-08 16:00:25,813 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:25,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-08 16:00:25,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-08 16:00:25,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-12-08 16:00:25,814 INFO L87 Difference]: Start difference. First operand 843 states and 993 transitions. Second operand 12 states. [2018-12-08 16:00:26,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:26,963 INFO L93 Difference]: Finished difference Result 1503 states and 1828 transitions. [2018-12-08 16:00:26,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-08 16:00:26,963 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 135 [2018-12-08 16:00:26,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:26,966 INFO L225 Difference]: With dead ends: 1503 [2018-12-08 16:00:26,966 INFO L226 Difference]: Without dead ends: 864 [2018-12-08 16:00:26,968 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 138 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-12-08 16:00:26,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2018-12-08 16:00:27,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 843. [2018-12-08 16:00:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2018-12-08 16:00:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 992 transitions. [2018-12-08 16:00:27,006 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 992 transitions. Word has length 135 [2018-12-08 16:00:27,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:27,007 INFO L480 AbstractCegarLoop]: Abstraction has 843 states and 992 transitions. [2018-12-08 16:00:27,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-08 16:00:27,007 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 992 transitions. [2018-12-08 16:00:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-12-08 16:00:27,009 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:27,009 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:00:27,010 INFO L423 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:27,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:27,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1727344072, now seen corresponding path program 1 times [2018-12-08 16:00:27,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:27,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:27,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:27,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:27,011 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:27,090 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-12-08 16:00:27,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:00:27,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-08 16:00:27,091 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:27,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 16:00:27,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 16:00:27,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-08 16:00:27,091 INFO L87 Difference]: Start difference. First operand 843 states and 992 transitions. Second operand 9 states. [2018-12-08 16:00:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:27,391 INFO L93 Difference]: Finished difference Result 1489 states and 1785 transitions. [2018-12-08 16:00:27,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-08 16:00:27,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 135 [2018-12-08 16:00:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:27,393 INFO L225 Difference]: With dead ends: 1489 [2018-12-08 16:00:27,394 INFO L226 Difference]: Without dead ends: 1120 [2018-12-08 16:00:27,394 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2018-12-08 16:00:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2018-12-08 16:00:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1109. [2018-12-08 16:00:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2018-12-08 16:00:27,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1299 transitions. [2018-12-08 16:00:27,421 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1299 transitions. Word has length 135 [2018-12-08 16:00:27,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:27,422 INFO L480 AbstractCegarLoop]: Abstraction has 1109 states and 1299 transitions. [2018-12-08 16:00:27,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 16:00:27,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1299 transitions. [2018-12-08 16:00:27,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-12-08 16:00:27,423 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:27,423 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:00:27,424 INFO L423 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:27,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:27,424 INFO L82 PathProgramCache]: Analyzing trace with hash -580747719, now seen corresponding path program 1 times [2018-12-08 16:00:27,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:27,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:27,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:27,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:27,425 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 16:00:27,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:27,474 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:27,474 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2018-12-08 16:00:27,474 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [50], [53], [55], [56], [57], [58], [59], [62], [64], [65], [68], [70], [73], [80], [83], [85], [94], [98], [102], [105], [108], [110], [113], [116], [118], [121], [138], [139], [140], [141], [142], [143], [144], [146], [149], [153], [154], [159], [161], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [235], [238], [242], [243], [246], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [283], [285], [286], [287], [288], [289], [290], [293], [294], [295], [296], [297], [298], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [333], [334] [2018-12-08 16:00:27,476 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:27,476 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:27,823 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-08 16:00:27,823 INFO L272 AbstractInterpreter]: Visited 70 different actions 167 times. Merged at 7 different actions 12 times. Never widened. Performed 12062 root evaluator evaluations with a maximum evaluation depth of 3. Performed 12062 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 132 variables. [2018-12-08 16:00:27,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:27,824 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-08 16:00:27,945 INFO L227 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 96.45% of their original sizes. [2018-12-08 16:00:27,945 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-08 16:00:28,049 INFO L418 sIntCurrentIteration]: We unified 138 AI predicates to 138 [2018-12-08 16:00:28,049 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-08 16:00:28,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 16:00:28,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-12-08 16:00:28,049 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:28,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-08 16:00:28,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-08 16:00:28,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-12-08 16:00:28,050 INFO L87 Difference]: Start difference. First operand 1109 states and 1299 transitions. Second operand 19 states. [2018-12-08 16:00:32,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:32,656 INFO L93 Difference]: Finished difference Result 2751 states and 3399 transitions. [2018-12-08 16:00:32,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-12-08 16:00:32,656 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 139 [2018-12-08 16:00:32,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:32,662 INFO L225 Difference]: With dead ends: 2751 [2018-12-08 16:00:32,663 INFO L226 Difference]: Without dead ends: 2110 [2018-12-08 16:00:32,664 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 169 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=358, Invalid=2092, Unknown=0, NotChecked=0, Total=2450 [2018-12-08 16:00:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2018-12-08 16:00:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2044. [2018-12-08 16:00:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2044 states. [2018-12-08 16:00:32,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2416 transitions. [2018-12-08 16:00:32,723 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2416 transitions. Word has length 139 [2018-12-08 16:00:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:32,723 INFO L480 AbstractCegarLoop]: Abstraction has 2044 states and 2416 transitions. [2018-12-08 16:00:32,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-08 16:00:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2416 transitions. [2018-12-08 16:00:32,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-12-08 16:00:32,725 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:32,725 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:00:32,725 INFO L423 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:32,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:32,725 INFO L82 PathProgramCache]: Analyzing trace with hash -45749022, now seen corresponding path program 1 times [2018-12-08 16:00:32,725 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:32,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:32,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:32,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:32,726 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-08 16:00:32,759 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:32,759 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:32,759 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 144 with the following transitions: [2018-12-08 16:00:32,759 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [50], [53], [55], [56], [57], [58], [59], [63], [64], [65], [68], [70], [73], [80], [83], [85], [94], [98], [102], [105], [110], [113], [116], [118], [121], [138], [139], [140], [141], [142], [143], [144], [146], [151], [153], [154], [159], [161], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [235], [238], [242], [243], [246], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [283], [285], [286], [287], [288], [289], [290], [293], [294], [295], [296], [297], [298], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [333], [334] [2018-12-08 16:00:32,761 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:32,761 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:33,525 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:00:33,525 INFO L272 AbstractInterpreter]: Visited 119 different actions 571 times. Merged at 19 different actions 52 times. Never widened. Performed 28163 root evaluator evaluations with a maximum evaluation depth of 3. Performed 28163 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 9 fixpoints after 4 different actions. Largest state had 132 variables. [2018-12-08 16:00:33,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:33,527 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:00:33,527 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:33,528 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/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 [2018-12-08 16:00:33,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:33,534 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:00:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:33,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:00:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:00:33,674 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:00:33,819 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-08 16:00:33,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:00:33,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 7 [2018-12-08 16:00:33,845 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:33,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 16:00:33,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 16:00:33,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-12-08 16:00:33,845 INFO L87 Difference]: Start difference. First operand 2044 states and 2416 transitions. Second operand 5 states. [2018-12-08 16:00:34,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:34,170 INFO L93 Difference]: Finished difference Result 3368 states and 4126 transitions. [2018-12-08 16:00:34,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 16:00:34,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-12-08 16:00:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:34,174 INFO L225 Difference]: With dead ends: 3368 [2018-12-08 16:00:34,175 INFO L226 Difference]: Without dead ends: 1702 [2018-12-08 16:00:34,177 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 286 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-12-08 16:00:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2018-12-08 16:00:34,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1605. [2018-12-08 16:00:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2018-12-08 16:00:34,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1890 transitions. [2018-12-08 16:00:34,230 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1890 transitions. Word has length 143 [2018-12-08 16:00:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:34,231 INFO L480 AbstractCegarLoop]: Abstraction has 1605 states and 1890 transitions. [2018-12-08 16:00:34,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 16:00:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1890 transitions. [2018-12-08 16:00:34,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-12-08 16:00:34,232 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:34,232 INFO L402 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:00:34,232 INFO L423 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:34,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:34,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1825563524, now seen corresponding path program 1 times [2018-12-08 16:00:34,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:34,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:34,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:34,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:34,233 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-12-08 16:00:34,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 16:00:34,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-08 16:00:34,291 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:34,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 16:00:34,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 16:00:34,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-08 16:00:34,292 INFO L87 Difference]: Start difference. First operand 1605 states and 1890 transitions. Second operand 6 states. [2018-12-08 16:00:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:34,421 INFO L93 Difference]: Finished difference Result 1622 states and 1911 transitions. [2018-12-08 16:00:34,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 16:00:34,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-12-08 16:00:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:34,424 INFO L225 Difference]: With dead ends: 1622 [2018-12-08 16:00:34,424 INFO L226 Difference]: Without dead ends: 1619 [2018-12-08 16:00:34,425 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-12-08 16:00:34,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2018-12-08 16:00:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 1605. [2018-12-08 16:00:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1605 states. [2018-12-08 16:00:34,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1605 states to 1605 states and 1886 transitions. [2018-12-08 16:00:34,475 INFO L78 Accepts]: Start accepts. Automaton has 1605 states and 1886 transitions. Word has length 139 [2018-12-08 16:00:34,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:34,475 INFO L480 AbstractCegarLoop]: Abstraction has 1605 states and 1886 transitions. [2018-12-08 16:00:34,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 16:00:34,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1605 states and 1886 transitions. [2018-12-08 16:00:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-12-08 16:00:34,477 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:34,477 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 16:00:34,477 INFO L423 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:34,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:34,478 INFO L82 PathProgramCache]: Analyzing trace with hash 243464153, now seen corresponding path program 1 times [2018-12-08 16:00:34,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:34,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:34,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:34,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:34,478 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:34,560 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-08 16:00:34,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:34,560 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:34,561 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2018-12-08 16:00:34,561 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [48], [49], [50], [53], [55], [56], [59], [63], [64], [65], [68], [70], [76], [80], [83], [84], [85], [94], [98], [102], [105], [108], [110], [116], [118], [121], [136], [137], [138], [139], [140], [141], [142], [143], [144], [146], [151], [153], [154], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [232], [235], [238], [242], [243], [246], [249], [251], [257], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [281], [282], [283], [285], [286], [287], [288], [291], [292], [293], [294], [295], [296], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [325], [326], [327], [328], [331], [332], [333], [334] [2018-12-08 16:00:34,562 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:34,562 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:35,212 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:00:35,212 INFO L272 AbstractInterpreter]: Visited 133 different actions 640 times. Merged at 18 different actions 62 times. Never widened. Performed 23043 root evaluator evaluations with a maximum evaluation depth of 5. Performed 23043 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 10 fixpoints after 4 different actions. Largest state had 132 variables. [2018-12-08 16:00:35,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:35,214 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:00:35,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:35,214 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/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 [2018-12-08 16:00:35,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:35,241 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:00:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:35,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:00:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 16:00:35,377 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:00:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-08 16:00:35,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-08 16:00:35,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2018-12-08 16:00:35,576 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-08 16:00:35,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-08 16:00:35,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-08 16:00:35,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2018-12-08 16:00:35,577 INFO L87 Difference]: Start difference. First operand 1605 states and 1886 transitions. Second operand 14 states. [2018-12-08 16:00:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:36,386 INFO L93 Difference]: Finished difference Result 3105 states and 3906 transitions. [2018-12-08 16:00:36,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-08 16:00:36,386 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 157 [2018-12-08 16:00:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:36,390 INFO L225 Difference]: With dead ends: 3105 [2018-12-08 16:00:36,390 INFO L226 Difference]: Without dead ends: 1873 [2018-12-08 16:00:36,393 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 308 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2018-12-08 16:00:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2018-12-08 16:00:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1607. [2018-12-08 16:00:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1607 states. [2018-12-08 16:00:36,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 1865 transitions. [2018-12-08 16:00:36,445 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 1865 transitions. Word has length 157 [2018-12-08 16:00:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:36,445 INFO L480 AbstractCegarLoop]: Abstraction has 1607 states and 1865 transitions. [2018-12-08 16:00:36,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-08 16:00:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 1865 transitions. [2018-12-08 16:00:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-12-08 16:00:36,448 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:36,448 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-08 16:00:36,448 INFO L423 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:36,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:36,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1022833945, now seen corresponding path program 1 times [2018-12-08 16:00:36,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:36,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:36,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:36,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:36,449 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 45 proven. 14 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-12-08 16:00:36,514 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:36,514 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:36,514 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-12-08 16:00:36,515 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [48], [49], [50], [53], [55], [56], [59], [63], [64], [65], [68], [70], [76], [80], [83], [84], [85], [94], [98], [102], [105], [108], [110], [113], [116], [118], [121], [136], [137], [138], [139], [140], [141], [142], [143], [144], [146], [151], [153], [154], [157], [159], [161], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [232], [235], [238], [242], [243], [246], [249], [251], [257], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [281], [282], [283], [285], [286], [287], [288], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [325], [326], [327], [328], [331], [332], [333], [334] [2018-12-08 16:00:36,516 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:36,516 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:37,756 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:00:37,756 INFO L272 AbstractInterpreter]: Visited 139 different actions 1124 times. Merged at 22 different actions 108 times. Never widened. Performed 44092 root evaluator evaluations with a maximum evaluation depth of 5. Performed 44092 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 26 fixpoints after 6 different actions. Largest state had 132 variables. [2018-12-08 16:00:37,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:37,758 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:00:37,758 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:37,758 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 16:00:37,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:37,764 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:00:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:37,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:00:37,929 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 115 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-08 16:00:37,929 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:00:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-12-08 16:00:38,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-08 16:00:38,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 22 [2018-12-08 16:00:38,335 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-08 16:00:38,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-08 16:00:38,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-08 16:00:38,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2018-12-08 16:00:38,336 INFO L87 Difference]: Start difference. First operand 1607 states and 1865 transitions. Second operand 16 states. [2018-12-08 16:00:39,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:39,727 INFO L93 Difference]: Finished difference Result 3664 states and 4560 transitions. [2018-12-08 16:00:39,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-12-08 16:00:39,728 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 234 [2018-12-08 16:00:39,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:39,733 INFO L225 Difference]: With dead ends: 3664 [2018-12-08 16:00:39,734 INFO L226 Difference]: Without dead ends: 2780 [2018-12-08 16:00:39,736 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 462 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=307, Invalid=1099, Unknown=0, NotChecked=0, Total=1406 [2018-12-08 16:00:39,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2018-12-08 16:00:39,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2480. [2018-12-08 16:00:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2480 states. [2018-12-08 16:00:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 2862 transitions. [2018-12-08 16:00:39,810 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 2862 transitions. Word has length 234 [2018-12-08 16:00:39,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:39,811 INFO L480 AbstractCegarLoop]: Abstraction has 2480 states and 2862 transitions. [2018-12-08 16:00:39,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-08 16:00:39,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 2862 transitions. [2018-12-08 16:00:39,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-12-08 16:00:39,814 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:39,814 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-08 16:00:39,814 INFO L423 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:39,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:39,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1238739305, now seen corresponding path program 1 times [2018-12-08 16:00:39,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:39,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:39,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:39,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:39,815 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-12-08 16:00:39,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:39,890 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:39,890 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-12-08 16:00:39,890 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [46], [48], [49], [50], [53], [55], [56], [59], [63], [64], [65], [68], [70], [76], [80], [83], [84], [85], [94], [98], [102], [105], [108], [110], [113], [116], [118], [121], [136], [137], [138], [139], [140], [141], [142], [143], [144], [146], [151], [153], [154], [157], [159], [161], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [232], [235], [238], [242], [243], [246], [249], [251], [257], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [281], [282], [283], [285], [286], [287], [288], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [325], [326], [327], [328], [331], [332], [333], [334] [2018-12-08 16:00:39,891 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:39,891 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:40,704 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:00:40,705 INFO L272 AbstractInterpreter]: Visited 140 different actions 926 times. Merged at 27 different actions 110 times. Never widened. Performed 28485 root evaluator evaluations with a maximum evaluation depth of 5. Performed 28485 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 27 fixpoints after 6 different actions. Largest state had 132 variables. [2018-12-08 16:00:40,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:40,710 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:00:40,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:40,710 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 16:00:40,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:40,717 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:00:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:40,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:00:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-12-08 16:00:40,836 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:00:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-12-08 16:00:41,101 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:00:41,101 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 6] total 13 [2018-12-08 16:00:41,101 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:41,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 16:00:41,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 16:00:41,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-12-08 16:00:41,102 INFO L87 Difference]: Start difference. First operand 2480 states and 2862 transitions. Second operand 6 states. [2018-12-08 16:00:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:41,175 INFO L93 Difference]: Finished difference Result 4149 states and 4834 transitions. [2018-12-08 16:00:41,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 16:00:41,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 234 [2018-12-08 16:00:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:41,182 INFO L225 Difference]: With dead ends: 4149 [2018-12-08 16:00:41,182 INFO L226 Difference]: Without dead ends: 2396 [2018-12-08 16:00:41,184 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 463 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-12-08 16:00:41,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2018-12-08 16:00:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2396. [2018-12-08 16:00:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2396 states. [2018-12-08 16:00:41,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 2766 transitions. [2018-12-08 16:00:41,263 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 2766 transitions. Word has length 234 [2018-12-08 16:00:41,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:41,263 INFO L480 AbstractCegarLoop]: Abstraction has 2396 states and 2766 transitions. [2018-12-08 16:00:41,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 16:00:41,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 2766 transitions. [2018-12-08 16:00:41,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-12-08 16:00:41,266 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:41,266 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-08 16:00:41,266 INFO L423 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:41,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:41,266 INFO L82 PathProgramCache]: Analyzing trace with hash -760457954, now seen corresponding path program 1 times [2018-12-08 16:00:41,266 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:41,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:41,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:41,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:41,267 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-12-08 16:00:41,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:41,332 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:41,333 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-12-08 16:00:41,333 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [48], [49], [50], [53], [55], [56], [57], [58], [59], [62], [63], [64], [65], [68], [70], [73], [76], [80], [83], [84], [85], [94], [98], [102], [105], [108], [110], [113], [116], [118], [121], [136], [137], [138], [139], [140], [141], [142], [143], [144], [146], [149], [151], [153], [154], [157], [159], [161], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [232], [235], [238], [242], [243], [246], [249], [251], [257], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [281], [282], [283], [285], [286], [287], [288], [289], [290], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [325], [326], [327], [328], [331], [332], [333], [334] [2018-12-08 16:00:41,334 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:41,334 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:42,507 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:00:42,507 INFO L272 AbstractInterpreter]: Visited 146 different actions 1102 times. Merged at 33 different actions 197 times. Never widened. Performed 37876 root evaluator evaluations with a maximum evaluation depth of 5. Performed 37876 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 35 fixpoints after 7 different actions. Largest state had 132 variables. [2018-12-08 16:00:42,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:42,509 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:00:42,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:42,509 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 16:00:42,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:42,515 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:00:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:42,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:00:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-12-08 16:00:42,621 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:00:42,845 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2018-12-08 16:00:42,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:00:42,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 6 [2018-12-08 16:00:42,860 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:42,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 16:00:42,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 16:00:42,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-08 16:00:42,860 INFO L87 Difference]: Start difference. First operand 2396 states and 2766 transitions. Second operand 6 states. [2018-12-08 16:00:42,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:42,928 INFO L93 Difference]: Finished difference Result 4125 states and 4878 transitions. [2018-12-08 16:00:42,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 16:00:42,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 268 [2018-12-08 16:00:42,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:42,934 INFO L225 Difference]: With dead ends: 4125 [2018-12-08 16:00:42,934 INFO L226 Difference]: Without dead ends: 2456 [2018-12-08 16:00:42,936 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 531 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-12-08 16:00:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2018-12-08 16:00:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2456. [2018-12-08 16:00:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2018-12-08 16:00:43,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 2830 transitions. [2018-12-08 16:00:43,002 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 2830 transitions. Word has length 268 [2018-12-08 16:00:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:43,002 INFO L480 AbstractCegarLoop]: Abstraction has 2456 states and 2830 transitions. [2018-12-08 16:00:43,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 16:00:43,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 2830 transitions. [2018-12-08 16:00:43,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-12-08 16:00:43,004 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 16:00:43,004 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-12-08 16:00:43,004 INFO L423 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 16:00:43,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:43,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2067600352, now seen corresponding path program 1 times [2018-12-08 16:00:43,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 16:00:43,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:43,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:43,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 16:00:43,005 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 16:00:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-12-08 16:00:43,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:43,068 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-08 16:00:43,068 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 269 with the following transitions: [2018-12-08 16:00:43,068 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [3], [5], [8], [10], [13], [19], [21], [22], [26], [29], [37], [38], [39], [41], [44], [48], [49], [50], [53], [55], [56], [57], [58], [59], [62], [63], [64], [65], [68], [70], [73], [76], [80], [83], [84], [85], [94], [98], [102], [105], [108], [110], [113], [116], [118], [121], [136], [137], [138], [139], [140], [141], [142], [143], [144], [146], [151], [153], [154], [157], [159], [161], [162], [163], [192], [195], [199], [205], [208], [212], [213], [217], [220], [222], [225], [232], [235], [238], [242], [243], [246], [249], [251], [257], [261], [264], [265], [266], [267], [268], [269], [271], [272], [273], [274], [275], [276], [277], [278], [279], [281], [282], [283], [285], [286], [287], [288], [289], [290], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [303], [304], [309], [310], [311], [312], [313], [314], [315], [316], [317], [319], [320], [321], [322], [325], [326], [327], [328], [331], [332], [333], [334] [2018-12-08 16:00:43,069 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-08 16:00:43,069 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-08 16:00:44,414 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-08 16:00:44,414 INFO L272 AbstractInterpreter]: Visited 145 different actions 1149 times. Merged at 27 different actions 159 times. Never widened. Performed 47967 root evaluator evaluations with a maximum evaluation depth of 5. Performed 47967 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 28 fixpoints after 6 different actions. Largest state had 132 variables. [2018-12-08 16:00:44,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 16:00:44,416 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-08 16:00:44,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 16:00:44,416 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 16:00:44,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 16:00:44,421 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-08 16:00:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 16:00:44,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 16:00:44,534 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-12-08 16:00:44,534 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-08 16:00:44,765 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-12-08 16:00:44,781 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-12-08 16:00:44,781 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 11 [2018-12-08 16:00:44,781 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 16:00:44,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 16:00:44,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 16:00:44,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-12-08 16:00:44,782 INFO L87 Difference]: Start difference. First operand 2456 states and 2830 transitions. Second operand 5 states. [2018-12-08 16:00:44,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 16:00:44,822 INFO L93 Difference]: Finished difference Result 2927 states and 3385 transitions. [2018-12-08 16:00:44,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 16:00:44,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 268 [2018-12-08 16:00:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 16:00:44,823 INFO L225 Difference]: With dead ends: 2927 [2018-12-08 16:00:44,823 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 16:00:44,826 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 533 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-12-08 16:00:44,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 16:00:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 16:00:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 16:00:44,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 16:00:44,827 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 268 [2018-12-08 16:00:44,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 16:00:44,827 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 16:00:44,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 16:00:44,827 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 16:00:44,827 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 16:00:44,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 16:00:44,896 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,903 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,905 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,908 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,911 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,912 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,913 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,916 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,917 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:44,918 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,107 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,118 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,210 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,315 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,390 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,403 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,404 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,414 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,428 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,430 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,431 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,432 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,432 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,435 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,439 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,440 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,440 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,441 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,534 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,536 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,537 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,537 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,539 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,540 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,540 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,541 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,542 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,547 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,549 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,553 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,553 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,560 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,562 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,562 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:45,564 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-12-08 16:00:46,477 WARN L180 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 31 [2018-12-08 16:00:46,605 WARN L180 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 17 [2018-12-08 16:00:46,810 WARN L180 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 19 [2018-12-08 16:00:47,017 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 23 [2018-12-08 16:00:47,225 WARN L180 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 38 [2018-12-08 16:00:47,994 WARN L180 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 28 [2018-12-08 16:00:48,394 WARN L180 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 23 [2018-12-08 16:00:48,636 WARN L180 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 25 [2018-12-08 16:00:49,230 INFO L451 ceAbstractionStarter]: At program point select_helpersFINAL(lines 729 735) the Hoare annotation is: true [2018-12-08 16:00:49,230 INFO L448 ceAbstractionStarter]: For program point select_helpersEXIT(lines 729 735) no Hoare annotation was computed. [2018-12-08 16:00:49,230 INFO L448 ceAbstractionStarter]: For program point valid_productEXIT(lines 736 744) no Hoare annotation was computed. [2018-12-08 16:00:49,230 INFO L451 ceAbstractionStarter]: At program point valid_productENTRY(lines 736 744) the Hoare annotation is: true [2018-12-08 16:00:49,230 INFO L448 ceAbstractionStarter]: For program point valid_productFINAL(lines 736 744) no Hoare annotation was computed. [2018-12-08 16:00:49,230 INFO L451 ceAbstractionStarter]: At program point L865(line 865) the Hoare annotation is: true [2018-12-08 16:00:49,230 INFO L448 ceAbstractionStarter]: For program point L865-1(line 865) no Hoare annotation was computed. [2018-12-08 16:00:49,230 INFO L451 ceAbstractionStarter]: At program point __utac_acc__Specification4_spec__1ENTRY(lines 859 883) the Hoare annotation is: true [2018-12-08 16:00:49,230 INFO L448 ceAbstractionStarter]: For program point __utac_acc__Specification4_spec__1EXIT(lines 859 883) no Hoare annotation was computed. [2018-12-08 16:00:49,230 INFO L444 ceAbstractionStarter]: At program point L873(line 873) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 1)))) (and (or (not (= 0 ~pumpRunning~0)) (< ~waterLevel~0 1) .cse0) (or (< ~waterLevel~0 2) .cse0))) [2018-12-08 16:00:49,230 INFO L448 ceAbstractionStarter]: For program point L871(lines 871 877) no Hoare annotation was computed. [2018-12-08 16:00:49,231 INFO L444 ceAbstractionStarter]: At program point L869(line 869) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 1)))) (and (or (not (= 0 ~pumpRunning~0)) (< ~waterLevel~0 1) .cse0) (or (< ~waterLevel~0 2) .cse0))) [2018-12-08 16:00:49,231 INFO L448 ceAbstractionStarter]: For program point L869-1(line 869) no Hoare annotation was computed. [2018-12-08 16:00:49,231 INFO L448 ceAbstractionStarter]: For program point L867(lines 867 880) no Hoare annotation was computed. [2018-12-08 16:00:49,231 INFO L448 ceAbstractionStarter]: For program point L867-1(lines 859 883) no Hoare annotation was computed. [2018-12-08 16:00:49,231 INFO L444 ceAbstractionStarter]: At program point mainENTRY(lines 957 979) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:00:49,231 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 957 979) no Hoare annotation was computed. [2018-12-08 16:00:49,231 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 957 979) no Hoare annotation was computed. [2018-12-08 16:00:49,231 INFO L444 ceAbstractionStarter]: At program point L969(line 969) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= main_~tmp~10 ~systemActive~0) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:00:49,231 INFO L444 ceAbstractionStarter]: At program point L969-1(line 969) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= main_~tmp~10 ~systemActive~0) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:00:49,231 INFO L448 ceAbstractionStarter]: For program point L967(lines 967 974) no Hoare annotation was computed. [2018-12-08 16:00:49,231 INFO L448 ceAbstractionStarter]: For program point L967-1(lines 967 974) no Hoare annotation was computed. [2018-12-08 16:00:49,231 INFO L448 ceAbstractionStarter]: For program point L965(line 965) no Hoare annotation was computed. [2018-12-08 16:00:49,232 INFO L444 ceAbstractionStarter]: At program point L964(line 964) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:00:49,232 INFO L444 ceAbstractionStarter]: At program point L963(line 963) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:00:49,232 INFO L444 ceAbstractionStarter]: At program point L963-1(line 963) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:00:49,232 INFO L448 ceAbstractionStarter]: For program point isPumpRunningEXIT(lines 624 632) no Hoare annotation was computed. [2018-12-08 16:00:49,232 INFO L451 ceAbstractionStarter]: At program point isPumpRunningENTRY(lines 624 632) the Hoare annotation is: true [2018-12-08 16:00:49,232 INFO L448 ceAbstractionStarter]: For program point isPumpRunningFINAL(lines 624 632) no Hoare annotation was computed. [2018-12-08 16:00:49,232 INFO L451 ceAbstractionStarter]: At program point isLowWaterLevelENTRY(lines 688 706) the Hoare annotation is: true [2018-12-08 16:00:49,232 INFO L448 ceAbstractionStarter]: For program point L697(lines 697 701) no Hoare annotation was computed. [2018-12-08 16:00:49,232 INFO L451 ceAbstractionStarter]: At program point L695(line 695) the Hoare annotation is: true [2018-12-08 16:00:49,232 INFO L448 ceAbstractionStarter]: For program point L697-2(lines 697 701) no Hoare annotation was computed. [2018-12-08 16:00:49,232 INFO L448 ceAbstractionStarter]: For program point L695-1(line 695) no Hoare annotation was computed. [2018-12-08 16:00:49,232 INFO L448 ceAbstractionStarter]: For program point isLowWaterLevelEXIT(lines 688 706) no Hoare annotation was computed. [2018-12-08 16:00:49,232 INFO L448 ceAbstractionStarter]: For program point isLowWaterLevelFINAL(lines 688 706) no Hoare annotation was computed. [2018-12-08 16:00:49,232 INFO L448 ceAbstractionStarter]: For program point select_featuresEXIT(lines 722 728) no Hoare annotation was computed. [2018-12-08 16:00:49,233 INFO L451 ceAbstractionStarter]: At program point select_featuresFINAL(lines 722 728) the Hoare annotation is: true [2018-12-08 16:00:49,233 INFO L444 ceAbstractionStarter]: At program point runTestENTRY(lines 947 956) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:00:49,233 INFO L448 ceAbstractionStarter]: For program point runTestEXIT(lines 947 956) no Hoare annotation was computed. [2018-12-08 16:00:49,233 INFO L448 ceAbstractionStarter]: For program point runTestFINAL(lines 947 956) no Hoare annotation was computed. [2018-12-08 16:00:49,233 INFO L451 ceAbstractionStarter]: At program point isMethaneAlarmENTRY(lines 613 623) the Hoare annotation is: true [2018-12-08 16:00:49,233 INFO L448 ceAbstractionStarter]: For program point isMethaneAlarmEXIT(lines 613 623) no Hoare annotation was computed. [2018-12-08 16:00:49,233 INFO L451 ceAbstractionStarter]: At program point L618(line 618) the Hoare annotation is: true [2018-12-08 16:00:49,233 INFO L448 ceAbstractionStarter]: For program point L618-1(line 618) no Hoare annotation was computed. [2018-12-08 16:00:49,233 INFO L448 ceAbstractionStarter]: For program point isMethaneAlarmFINAL(lines 613 623) no Hoare annotation was computed. [2018-12-08 16:00:49,233 INFO L444 ceAbstractionStarter]: At program point deactivatePumpENTRY(lines 605 612) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (< ~waterLevel~0 1) (= |old(~pumpRunning~0)| 0) (not (= ~systemActive~0 1))) [2018-12-08 16:00:49,233 INFO L448 ceAbstractionStarter]: For program point deactivatePumpEXIT(lines 605 612) no Hoare annotation was computed. [2018-12-08 16:00:49,233 INFO L448 ceAbstractionStarter]: For program point deactivatePumpFINAL(lines 605 612) no Hoare annotation was computed. [2018-12-08 16:00:49,233 INFO L448 ceAbstractionStarter]: For program point L839(lines 839 845) no Hoare annotation was computed. [2018-12-08 16:00:49,233 INFO L448 ceAbstractionStarter]: For program point isHighWaterSensorDryEXIT(lines 835 848) no Hoare annotation was computed. [2018-12-08 16:00:49,233 INFO L451 ceAbstractionStarter]: At program point isHighWaterSensorDryENTRY(lines 835 848) the Hoare annotation is: true [2018-12-08 16:00:49,234 INFO L448 ceAbstractionStarter]: For program point isHighWaterSensorDryFINAL(lines 835 848) no Hoare annotation was computed. [2018-12-08 16:00:49,234 INFO L448 ceAbstractionStarter]: For program point L578-1(line 578) no Hoare annotation was computed. [2018-12-08 16:00:49,234 INFO L448 ceAbstractionStarter]: For program point L576(lines 576 593) no Hoare annotation was computed. [2018-12-08 16:00:49,234 INFO L448 ceAbstractionStarter]: For program point processEnvironmentEXIT(lines 572 596) no Hoare annotation was computed. [2018-12-08 16:00:49,234 INFO L444 ceAbstractionStarter]: At program point processEnvironmentENTRY(lines 572 596) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-12-08 16:00:49,234 INFO L444 ceAbstractionStarter]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 (= |old(~pumpRunning~0)| 0) .cse1) (or (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1))) [2018-12-08 16:00:49,234 INFO L448 ceAbstractionStarter]: For program point L591-1(lines 572 596) no Hoare annotation was computed. [2018-12-08 16:00:49,234 INFO L444 ceAbstractionStarter]: At program point L586(line 586) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse2 (not (= 0 |old(~pumpRunning~0)|))) (.cse1 (not (= ~systemActive~0 1)))) (and (or (= ~methaneLevelCritical~0 0) .cse0 .cse1) (or .cse2 (< ~waterLevel~0 2) .cse1) (or (and (= processEnvironment_~tmp~6 ~methaneLevelCritical~0) (= |old(~pumpRunning~0)| ~pumpRunning~0)) .cse0 .cse1) (or .cse2 .cse1 (not (= ~waterLevel~0 1))))) [2018-12-08 16:00:49,234 INFO L444 ceAbstractionStarter]: At program point L582(line 582) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or .cse0 .cse1 (and (= processEnvironment_~tmp~6 ~methaneLevelCritical~0) (= |old(~pumpRunning~0)| ~pumpRunning~0))))) [2018-12-08 16:00:49,234 INFO L448 ceAbstractionStarter]: For program point L580(lines 580 588) no Hoare annotation was computed. [2018-12-08 16:00:49,234 INFO L444 ceAbstractionStarter]: At program point L578(line 578) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1))) [2018-12-08 16:00:49,234 INFO L448 ceAbstractionStarter]: For program point processEnvironment__wrappee__baseEXIT(lines 512 518) no Hoare annotation was computed. [2018-12-08 16:00:49,234 INFO L451 ceAbstractionStarter]: At program point processEnvironment__wrappee__baseFINAL(lines 512 518) the Hoare annotation is: true [2018-12-08 16:00:49,235 INFO L444 ceAbstractionStarter]: At program point testENTRY(lines 410 473) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (and (= ~methaneLevelCritical~0 0) (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:00:49,235 INFO L444 ceAbstractionStarter]: At program point L442(line 442) the Hoare annotation is: (let ((.cse0 (= test_~splverifierCounter~0 0))) (or (not (= ~systemActive~0 1)) (not (= 0 |old(~pumpRunning~0)|)) (and (= ~pumpRunning~0 0) (<= |old(~waterLevel~0)| ~waterLevel~0) .cse0) (and (<= 2 ~waterLevel~0) .cse0) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-12-08 16:00:49,235 INFO L448 ceAbstractionStarter]: For program point L440(lines 440 446) no Hoare annotation was computed. [2018-12-08 16:00:49,235 INFO L448 ceAbstractionStarter]: For program point L440-1(lines 440 446) no Hoare annotation was computed. [2018-12-08 16:00:49,235 INFO L448 ceAbstractionStarter]: For program point testFINAL(lines 410 473) no Hoare annotation was computed. [2018-12-08 16:00:49,235 INFO L444 ceAbstractionStarter]: At program point L432(line 432) the Hoare annotation is: (let ((.cse0 (= test_~splverifierCounter~0 0))) (or (not (= 0 |old(~pumpRunning~0)|)) (and (<= 2 ~waterLevel~0) .cse0) (not (= ~systemActive~0 1)) (and (= 0 ~pumpRunning~0) (<= 1 ~waterLevel~0) .cse0) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-12-08 16:00:49,235 INFO L444 ceAbstractionStarter]: At program point L463(lines 420 465) the Hoare annotation is: (let ((.cse0 (= test_~splverifierCounter~0 0))) (or (and (<= 2 ~waterLevel~0) .cse0) (not (= ~systemActive~0 1)) (not (= 0 |old(~pumpRunning~0)|)) (and (= ~pumpRunning~0 0) (<= |old(~waterLevel~0)| ~waterLevel~0) .cse0) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-12-08 16:00:49,235 INFO L448 ceAbstractionStarter]: For program point L430(lines 430 436) no Hoare annotation was computed. [2018-12-08 16:00:49,235 INFO L448 ceAbstractionStarter]: For program point L430-1(lines 430 436) no Hoare annotation was computed. [2018-12-08 16:00:49,235 INFO L448 ceAbstractionStarter]: For program point L422(lines 422 426) no Hoare annotation was computed. [2018-12-08 16:00:49,235 INFO L444 ceAbstractionStarter]: At program point L466(lines 419 467) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (not (= ~systemActive~0 1)) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0))) [2018-12-08 16:00:49,235 INFO L448 ceAbstractionStarter]: For program point L456(lines 456 460) no Hoare annotation was computed. [2018-12-08 16:00:49,236 INFO L444 ceAbstractionStarter]: At program point L456-2(lines 450 461) the Hoare annotation is: (let ((.cse0 (= test_~splverifierCounter~0 0))) (or (not (= ~systemActive~0 1)) (not (= 0 |old(~pumpRunning~0)|)) (and (= ~pumpRunning~0 0) (<= |old(~waterLevel~0)| ~waterLevel~0) .cse0) (and (<= 2 ~waterLevel~0) .cse0) (not (= |old(~waterLevel~0)| 1)) (not (= |old(~methaneLevelCritical~0)| 0)))) [2018-12-08 16:00:49,236 INFO L448 ceAbstractionStarter]: For program point L421(lines 420 465) no Hoare annotation was computed. [2018-12-08 16:00:49,236 INFO L448 ceAbstractionStarter]: For program point testEXIT(lines 410 473) no Hoare annotation was computed. [2018-12-08 16:00:49,236 INFO L448 ceAbstractionStarter]: For program point L450(lines 450 461) no Hoare annotation was computed. [2018-12-08 16:00:49,236 INFO L448 ceAbstractionStarter]: For program point isLowWaterSensorDryFINAL(lines 849 857) no Hoare annotation was computed. [2018-12-08 16:00:49,236 INFO L451 ceAbstractionStarter]: At program point isLowWaterSensorDryENTRY(lines 849 857) the Hoare annotation is: true [2018-12-08 16:00:49,236 INFO L448 ceAbstractionStarter]: For program point isLowWaterSensorDryEXIT(lines 849 857) no Hoare annotation was computed. [2018-12-08 16:00:49,236 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-08 16:00:49,236 INFO L444 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-12-08 16:00:49,236 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 16:00:49,236 INFO L448 ceAbstractionStarter]: For program point activatePumpFINAL(lines 597 604) no Hoare annotation was computed. [2018-12-08 16:00:49,236 INFO L448 ceAbstractionStarter]: For program point activatePumpEXIT(lines 597 604) no Hoare annotation was computed. [2018-12-08 16:00:49,236 INFO L444 ceAbstractionStarter]: At program point activatePumpENTRY(lines 597 604) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 2) (not (= ~systemActive~0 1)) (= |old(~pumpRunning~0)| ~pumpRunning~0)) [2018-12-08 16:00:49,236 INFO L451 ceAbstractionStarter]: At program point getWaterLevelENTRY(lines 826 834) the Hoare annotation is: true [2018-12-08 16:00:49,236 INFO L448 ceAbstractionStarter]: For program point getWaterLevelFINAL(lines 826 834) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point getWaterLevelEXIT(lines 826 834) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point isHighWaterLevelEXIT(lines 669 687) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point L678(lines 678 682) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L451 ceAbstractionStarter]: At program point isHighWaterLevelENTRY(lines 669 687) the Hoare annotation is: true [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point isHighWaterLevelFINAL(lines 669 687) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L451 ceAbstractionStarter]: At program point L676(line 676) the Hoare annotation is: true [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point L678-2(lines 678 682) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point L676-1(line 676) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point L786-1(lines 782 793) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L444 ceAbstractionStarter]: At program point changeMethaneLevelENTRY(lines 782 793) the Hoare annotation is: (let ((.cse4 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse0 (not (= |old(~methaneLevelCritical~0)| 1))) (.cse2 (= ~methaneLevelCritical~0 1)) (.cse5 (not (= ~methaneLevelCritical~0 0))) (.cse8 (not (= 0 ~pumpRunning~0))) (.cse7 (< ~waterLevel~0 1)) (.cse6 (= 0 ~methaneLevelCritical~0)) (.cse1 (not (= ~systemActive~0 1))) (.cse9 (not .cse4)) (.cse3 (< ~waterLevel~0 2))) (and (or (or .cse0 .cse1) .cse2 .cse3) (or (or .cse4 .cse1) .cse5 .cse3) (or .cse6 .cse7 (or .cse8 .cse1 .cse9)) (or .cse0 .cse8 .cse2 .cse1 (not (= ~waterLevel~0 1))) (or .cse5 .cse8 .cse4 .cse7 .cse1) (or .cse6 (or (or .cse1 .cse9) .cse3))))) [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point changeMethaneLevelEXIT(lines 782 793) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L451 ceAbstractionStarter]: At program point isMethaneLevelCriticalENTRY(lines 794 802) the Hoare annotation is: true [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point isMethaneLevelCriticalFINAL(lines 794 802) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point isMethaneLevelCriticalEXIT(lines 794 802) no Hoare annotation was computed. [2018-12-08 16:00:49,237 INFO L448 ceAbstractionStarter]: For program point L897(line 897) no Hoare annotation was computed. [2018-12-08 16:00:49,238 INFO L448 ceAbstractionStarter]: For program point cleanupEXIT(lines 886 915) no Hoare annotation was computed. [2018-12-08 16:00:49,238 INFO L451 ceAbstractionStarter]: At program point L896-2(lines 896 910) the Hoare annotation is: true [2018-12-08 16:00:49,238 INFO L451 ceAbstractionStarter]: At program point cleanupENTRY(lines 886 915) the Hoare annotation is: true [2018-12-08 16:00:49,238 INFO L451 ceAbstractionStarter]: At program point L892(line 892) the Hoare annotation is: true [2018-12-08 16:00:49,238 INFO L448 ceAbstractionStarter]: For program point L892-1(line 892) no Hoare annotation was computed. [2018-12-08 16:00:49,238 INFO L451 ceAbstractionStarter]: At program point L911(lines 886 915) the Hoare annotation is: true [2018-12-08 16:00:49,238 INFO L448 ceAbstractionStarter]: For program point L907(line 907) no Hoare annotation was computed. [2018-12-08 16:00:49,238 INFO L448 ceAbstractionStarter]: For program point L900(lines 900 904) no Hoare annotation was computed. [2018-12-08 16:00:49,238 INFO L451 ceAbstractionStarter]: At program point L900-1(lines 900 904) the Hoare annotation is: true [2018-12-08 16:00:49,238 INFO L444 ceAbstractionStarter]: At program point L501(line 501) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| ~pumpRunning~0)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (and (= ~waterLevel~0 |old(~waterLevel~0)|) .cse0) (not (= 0 |old(~pumpRunning~0)|)) (< |old(~waterLevel~0)| 1) .cse1) (or (and (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) .cse0) (< |old(~waterLevel~0)| 2) .cse1))) [2018-12-08 16:00:49,238 INFO L444 ceAbstractionStarter]: At program point L499(lines 499 505) the Hoare annotation is: (let ((.cse1 (= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse0 (not (= ~systemActive~0 1)))) (and (or (or (or (not (= 0 |old(~pumpRunning~0)|)) .cse0) (not (= |old(~waterLevel~0)| 1))) (and .cse1 (= |old(~pumpRunning~0)| ~pumpRunning~0))) (or (and (not (= |old(~pumpRunning~0)| 0)) (= 0 ~pumpRunning~0) (<= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) .cse1 (or (< |old(~waterLevel~0)| 2) .cse0)))) [2018-12-08 16:00:49,238 INFO L444 ceAbstractionStarter]: At program point timeShiftENTRY(lines 488 511) the Hoare annotation is: (let ((.cse1 (not (= ~systemActive~0 1))) (.cse0 (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0)))) (and (or .cse0 (not (= 0 |old(~pumpRunning~0)|)) (< |old(~waterLevel~0)| 1) .cse1) (or (or (< |old(~waterLevel~0)| 2) .cse1) .cse0))) [2018-12-08 16:00:49,238 INFO L444 ceAbstractionStarter]: At program point L494(line 494) the Hoare annotation is: (let ((.cse0 (not (= ~systemActive~0 1)))) (and (or (or (< |old(~waterLevel~0)| 2) .cse0) (and (= ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~pumpRunning~0)| ~pumpRunning~0))) (or (not (= 0 |old(~pumpRunning~0)|)) (< |old(~waterLevel~0)| 1) .cse0))) [2018-12-08 16:00:49,239 INFO L448 ceAbstractionStarter]: For program point L492(lines 491 510) no Hoare annotation was computed. [2018-12-08 16:00:49,239 INFO L448 ceAbstractionStarter]: For program point timeShiftEXIT(lines 488 511) no Hoare annotation was computed. [2018-12-08 16:00:49,239 INFO L448 ceAbstractionStarter]: For program point timeShiftFINAL(lines 488 511) no Hoare annotation was computed. [2018-12-08 16:00:49,239 INFO L444 ceAbstractionStarter]: At program point lowerWaterLevelENTRY(lines 758 769) the Hoare annotation is: (or (= ~waterLevel~0 |old(~waterLevel~0)|) (or (= ~pumpRunning~0 0) (< |old(~waterLevel~0)| 2) (not (= ~systemActive~0 1)))) [2018-12-08 16:00:49,239 INFO L448 ceAbstractionStarter]: For program point lowerWaterLevelEXIT(lines 758 769) no Hoare annotation was computed. [2018-12-08 16:00:49,239 INFO L448 ceAbstractionStarter]: For program point L762-1(lines 758 769) no Hoare annotation was computed. [2018-12-08 16:00:49,239 INFO L448 ceAbstractionStarter]: For program point setupEXIT(lines 940 946) no Hoare annotation was computed. [2018-12-08 16:00:49,239 INFO L451 ceAbstractionStarter]: At program point setupFINAL(lines 940 946) the Hoare annotation is: true [2018-12-08 16:00:49,239 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 16:00:49,239 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= ~waterLevel~0 1) (= ~methaneLevelCritical~0 0) (= ~pumpRunning~0 0) (= ~systemActive~0 1)) [2018-12-08 16:00:49,239 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 16:00:49,239 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 16:00:49,239 INFO L444 ceAbstractionStarter]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 520 544) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-12-08 16:00:49,239 INFO L448 ceAbstractionStarter]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 520 544) no Hoare annotation was computed. [2018-12-08 16:00:49,240 INFO L444 ceAbstractionStarter]: At program point L539(line 539) the Hoare annotation is: (or (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-12-08 16:00:49,240 INFO L448 ceAbstractionStarter]: For program point L539-1(lines 520 544) no Hoare annotation was computed. [2018-12-08 16:00:49,240 INFO L444 ceAbstractionStarter]: At program point L534(line 534) the Hoare annotation is: (or (and (= 0 processEnvironment__wrappee__highWaterSensor_~tmp~4) (= |old(~pumpRunning~0)| ~pumpRunning~0)) (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-12-08 16:00:49,240 INFO L444 ceAbstractionStarter]: At program point L530(line 530) the Hoare annotation is: (let ((.cse0 (not (= 0 |old(~pumpRunning~0)|))) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 (< ~waterLevel~0 1) .cse1 (= |old(~pumpRunning~0)| ~pumpRunning~0)) (or (or .cse0 .cse1) (not (= ~waterLevel~0 1))))) [2018-12-08 16:00:49,240 INFO L448 ceAbstractionStarter]: For program point L528(lines 528 536) no Hoare annotation was computed. [2018-12-08 16:00:49,240 INFO L444 ceAbstractionStarter]: At program point L526(line 526) the Hoare annotation is: (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (not (= 0 |old(~pumpRunning~0)|)) (< ~waterLevel~0 1) (not (= ~systemActive~0 1))) [2018-12-08 16:00:49,240 INFO L448 ceAbstractionStarter]: For program point L526-1(line 526) no Hoare annotation was computed. [2018-12-08 16:00:49,240 INFO L448 ceAbstractionStarter]: For program point L524(lines 524 541) no Hoare annotation was computed. [2018-12-08 16:00:49,240 INFO L448 ceAbstractionStarter]: For program point waterRiseEXIT(lines 770 781) no Hoare annotation was computed. [2018-12-08 16:00:49,240 INFO L448 ceAbstractionStarter]: For program point L774-1(lines 770 781) no Hoare annotation was computed. [2018-12-08 16:00:49,240 INFO L444 ceAbstractionStarter]: At program point waterRiseENTRY(lines 770 781) the Hoare annotation is: (let ((.cse0 (= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 .cse1 (< |old(~waterLevel~0)| 2)) (or .cse0 (< |old(~waterLevel~0)| 1) (or (not (= 0 ~pumpRunning~0)) .cse1)))) [2018-12-08 16:00:49,240 INFO L448 ceAbstractionStarter]: For program point __automaton_failFINAL(lines 746 753) no Hoare annotation was computed. [2018-12-08 16:00:49,240 INFO L448 ceAbstractionStarter]: For program point __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION(line 750) no Hoare annotation was computed. [2018-12-08 16:00:49,240 INFO L451 ceAbstractionStarter]: At program point __automaton_failENTRY(lines 746 753) the Hoare annotation is: true [2018-12-08 16:00:49,241 INFO L448 ceAbstractionStarter]: For program point __automaton_failEXIT(lines 746 753) no Hoare annotation was computed. [2018-12-08 16:00:49,241 INFO L448 ceAbstractionStarter]: For program point processEnvironment__wrappee__lowWaterSensorEXIT(lines 546 570) no Hoare annotation was computed. [2018-12-08 16:00:49,241 INFO L444 ceAbstractionStarter]: At program point processEnvironment__wrappee__lowWaterSensorENTRY(lines 546 570) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| ~pumpRunning~0)) (.cse1 (< ~waterLevel~0 1)) (.cse2 (not (= ~systemActive~0 1)))) (and (or .cse0 (not (= 0 |old(~pumpRunning~0)|)) .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 0))))) [2018-12-08 16:00:49,241 INFO L444 ceAbstractionStarter]: At program point L565(line 565) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (= |old(~pumpRunning~0)| ~pumpRunning~0) (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or .cse0 (= |old(~pumpRunning~0)| 0) .cse1 (not (= ~methaneLevelCritical~0 0))))) [2018-12-08 16:00:49,241 INFO L448 ceAbstractionStarter]: For program point L565-1(lines 546 570) no Hoare annotation was computed. [2018-12-08 16:00:49,241 INFO L444 ceAbstractionStarter]: At program point L560(line 560) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1))) [2018-12-08 16:00:49,241 INFO L444 ceAbstractionStarter]: At program point L556(line 556) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or (and (<= 1 processEnvironment__wrappee__lowWaterSensor_~tmp~5) (= |old(~pumpRunning~0)| ~pumpRunning~0)) .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))))) [2018-12-08 16:00:49,241 INFO L448 ceAbstractionStarter]: For program point L554(lines 554 562) no Hoare annotation was computed. [2018-12-08 16:00:49,241 INFO L444 ceAbstractionStarter]: At program point L552(line 552) the Hoare annotation is: (let ((.cse0 (< ~waterLevel~0 1)) (.cse1 (not (= ~systemActive~0 1)))) (and (or (not (= 0 |old(~pumpRunning~0)|)) .cse0 .cse1) (or (= |old(~pumpRunning~0)| ~pumpRunning~0) .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))))) [2018-12-08 16:00:49,241 INFO L448 ceAbstractionStarter]: For program point L552-1(line 552) no Hoare annotation was computed. [2018-12-08 16:00:49,241 INFO L448 ceAbstractionStarter]: For program point L550(lines 550 567) no Hoare annotation was computed. [2018-12-08 16:00:49,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 04:00:49 BoogieIcfgContainer [2018-12-08 16:00:49,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 16:00:49,251 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 16:00:49,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 16:00:49,251 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 16:00:49,252 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 04:00:17" (3/4) ... [2018-12-08 16:00:49,255 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 16:00:49,259 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure select_helpers [2018-12-08 16:00:49,259 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure valid_product [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __utac_acc__Specification4_spec__1 [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isLowWaterLevel [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure select_features [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure runTest [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isHighWaterSensorDry [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure test [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isLowWaterSensorDry [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure activatePump [2018-12-08 16:00:49,260 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure getWaterLevel [2018-12-08 16:00:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isHighWaterLevel [2018-12-08 16:00:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2018-12-08 16:00:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2018-12-08 16:00:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2018-12-08 16:00:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2018-12-08 16:00:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure lowerWaterLevel [2018-12-08 16:00:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure setup [2018-12-08 16:00:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2018-12-08 16:00:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2018-12-08 16:00:49,261 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __automaton_fail [2018-12-08 16:00:49,262 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__lowWaterSensor [2018-12-08 16:00:49,268 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2018-12-08 16:00:49,268 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2018-12-08 16:00:49,268 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-08 16:00:49,269 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-08 16:00:49,269 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 16:00:49,269 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 16:00:49,286 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((2 <= waterLevel && splverifierCounter == 0) || !(systemActive == 1)) || !(0 == \old(pumpRunning))) || ((pumpRunning == 0 && \old(waterLevel) <= waterLevel) && splverifierCounter == 0)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) [2018-12-08 16:00:49,287 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(0 == \old(pumpRunning)) || !(systemActive == 1)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) [2018-12-08 16:00:49,311 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ad572355-1a93-44c3-9026-5a92697371f4/bin-2019/utaipan/witness.graphml [2018-12-08 16:00:49,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 16:00:49,311 INFO L168 Benchmark]: Toolchain (without parser) took 32142.78 ms. Allocated memory was 1.0 GB in the beginning and 2.7 GB in the end (delta: 1.6 GB). Free memory was 953.5 MB in the beginning and 1.6 GB in the end (delta: -631.2 MB). Peak memory consumption was 999.3 MB. Max. memory is 11.5 GB. [2018-12-08 16:00:49,312 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:00:49,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -140.1 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2018-12-08 16:00:49,312 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.78 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 16:00:49,312 INFO L168 Benchmark]: Boogie Preprocessor took 22.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-12-08 16:00:49,312 INFO L168 Benchmark]: RCFGBuilder took 345.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.8 MB). Peak memory consumption was 58.8 MB. Max. memory is 11.5 GB. [2018-12-08 16:00:49,312 INFO L168 Benchmark]: TraceAbstraction took 31424.47 ms. Allocated memory was 1.1 GB in the beginning and 2.7 GB in the end (delta: 1.5 GB). Free memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: -553.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 11.5 GB. [2018-12-08 16:00:49,312 INFO L168 Benchmark]: Witness Printer took 59.46 ms. Allocated memory is still 2.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 11.8 kB). Peak memory consumption was 11.8 kB. Max. memory is 11.5 GB. [2018-12-08 16:00:49,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 981.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 268.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 953.5 MB in the beginning and 1.1 GB in the end (delta: -140.1 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.78 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 345.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.8 MB). Peak memory consumption was 58.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 31424.47 ms. Allocated memory was 1.1 GB in the beginning and 2.7 GB in the end (delta: 1.5 GB). Free memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: -553.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 11.5 GB. * Witness Printer took 59.46 ms. Allocated memory is still 2.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 11.8 kB). Peak memory consumption was 11.8 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 750]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 420]: Loop Invariant Derived loop invariant: (((((2 <= waterLevel && splverifierCounter == 0) || !(systemActive == 1)) || !(0 == \old(pumpRunning))) || ((pumpRunning == 0 && \old(waterLevel) <= waterLevel) && splverifierCounter == 0)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) - InvariantResult [Line: 886]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 896]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 419]: Loop Invariant Derived loop invariant: ((!(0 == \old(pumpRunning)) || !(systemActive == 1)) || !(\old(waterLevel) == 1)) || !(\old(methaneLevelCritical) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 30 procedures, 159 locations, 1 error locations. SAFE Result, 31.3s OverallTime, 18 OverallIterations, 4 TraceHistogramMax, 14.3s AutomataDifference, 0.0s DeadEndRemovalTime, 4.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 3600 SDtfs, 4175 SDslu, 13011 SDs, 0 SdLazy, 9386 SolverSat, 1835 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 3529 GetRequests, 3220 SyntacticMatches, 24 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2480occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.1s AbstIntTime, 11 AbstIntIterations, 5 AbstIntStrong, 0.9979115911764623 AbsIntWeakeningRatio, 0.8880597014925373 AbsIntAvgWeakeningVarsNumRemoved, 35.19701492537313 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 18 MinimizatonAttempts, 908 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 66 LocationsWithAnnotation, 5886 PreInvPairs, 6057 NumberOfFragments, 1228 HoareAnnotationTreeSize, 5886 FomulaSimplifications, 33842 FormulaSimplificationTreeSizeReduction, 0.8s HoareSimplificationTime, 66 FomulaSimplificationsInter, 50529 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 3853 NumberOfCodeBlocks, 3853 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 5127 ConstructedInterpolants, 0 QuantifiedInterpolants, 1299109 SizeOfPredicates, 32 NumberOfNonLiveVariables, 5998 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 30 InterpolantComputations, 11 PerfectInterpolantSequences, 2334/2484 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...