./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label55_true-unreach-call_false-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label55_true-unreach-call_false-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/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 d7ee2ac819f7b75cfc0560bac3b8eea31e76c5dc .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 14:30:49,556 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:30:49,557 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:30:49,566 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:30:49,566 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:30:49,567 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:30:49,568 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:30:49,569 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:30:49,570 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:30:49,571 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:30:49,572 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:30:49,572 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:30:49,573 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:30:49,573 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:30:49,575 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:30:49,575 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:30:49,576 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:30:49,577 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:30:49,579 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:30:49,580 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:30:49,581 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:30:49,582 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:30:49,584 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:30:49,584 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:30:49,584 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:30:49,585 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:30:49,586 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:30:49,587 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:30:49,588 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:30:49,588 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:30:49,588 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:30:49,589 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:30:49,589 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:30:49,589 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:30:49,591 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:30:49,591 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:30:49,592 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 14:30:49,602 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:30:49,603 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:30:49,603 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:30:49,603 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 14:30:49,604 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 14:30:49,604 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 14:30:49,604 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 14:30:49,604 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 14:30:49,604 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 14:30:49,604 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 14:30:49,604 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 14:30:49,605 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 14:30:49,605 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 14:30:49,605 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:30:49,605 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:30:49,606 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:30:49,606 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:30:49,606 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:30:49,606 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:30:49,606 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:30:49,606 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:30:49,606 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:30:49,607 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:30:49,607 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:30:49,607 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:30:49,607 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:30:49,607 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:30:49,607 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:30:49,607 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:30:49,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:30:49,608 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:30:49,608 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:30:49,608 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:30:49,608 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 14:30:49,608 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:30:49,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:30:49,609 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 14:30:49,609 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_2de6ae3d-065d-45d6-9152-22be88689dfc/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 -> d7ee2ac819f7b75cfc0560bac3b8eea31e76c5dc [2018-11-18 14:30:49,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:30:49,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:30:49,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:30:49,642 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:30:49,642 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:30:49,643 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem14_label55_true-unreach-call_false-termination.c [2018-11-18 14:30:49,682 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/data/c860a732f/1b83faa8d7d8416785400950db2f5976/FLAG302488abb [2018-11-18 14:30:50,140 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:30:50,141 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/sv-benchmarks/c/eca-rers2012/Problem14_label55_true-unreach-call_false-termination.c [2018-11-18 14:30:50,153 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/data/c860a732f/1b83faa8d7d8416785400950db2f5976/FLAG302488abb [2018-11-18 14:30:50,663 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/data/c860a732f/1b83faa8d7d8416785400950db2f5976 [2018-11-18 14:30:50,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:30:50,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 14:30:50,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:30:50,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:30:50,670 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:30:50,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:30:50" (1/1) ... [2018-11-18 14:30:50,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4915a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:50, skipping insertion in model container [2018-11-18 14:30:50,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:30:50" (1/1) ... [2018-11-18 14:30:50,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:30:50,723 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:30:50,971 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:30:50,975 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:30:51,064 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:30:51,077 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:30:51,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51 WrapperNode [2018-11-18 14:30:51,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:30:51,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 14:30:51,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 14:30:51,078 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 14:30:51,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (1/1) ... [2018-11-18 14:30:51,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (1/1) ... [2018-11-18 14:30:51,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 14:30:51,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:30:51,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:30:51,169 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:30:51,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (1/1) ... [2018-11-18 14:30:51,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (1/1) ... [2018-11-18 14:30:51,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (1/1) ... [2018-11-18 14:30:51,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (1/1) ... [2018-11-18 14:30:51,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (1/1) ... [2018-11-18 14:30:51,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (1/1) ... [2018-11-18 14:30:51,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (1/1) ... [2018-11-18 14:30:51,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:30:51,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:30:51,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:30:51,229 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:30:51,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/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 [2018-11-18 14:30:51,268 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 14:30:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:30:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:30:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-18 14:30:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-18 14:30:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:30:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:30:51,269 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:30:51,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:30:52,151 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:30:52,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:30:52 BoogieIcfgContainer [2018-11-18 14:30:52,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:30:52,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:30:52,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:30:52,154 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:30:52,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:30:50" (1/3) ... [2018-11-18 14:30:52,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a21ebd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:30:52, skipping insertion in model container [2018-11-18 14:30:52,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:30:51" (2/3) ... [2018-11-18 14:30:52,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a21ebd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:30:52, skipping insertion in model container [2018-11-18 14:30:52,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:30:52" (3/3) ... [2018-11-18 14:30:52,156 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label55_true-unreach-call_false-termination.c [2018-11-18 14:30:52,162 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:30:52,168 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:30:52,177 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:30:52,199 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:30:52,199 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:30:52,199 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:30:52,199 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:30:52,199 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:30:52,200 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:30:52,200 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:30:52,200 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:30:52,217 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-18 14:30:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-18 14:30:52,223 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:30:52,223 INFO L375 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] [2018-11-18 14:30:52,225 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:30:52,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:30:52,229 INFO L82 PathProgramCache]: Analyzing trace with hash -353931284, now seen corresponding path program 1 times [2018-11-18 14:30:52,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:30:52,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:30:52,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:30:52,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:30:52,261 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:30:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:30:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:30:52,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:30:52,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 14:30:52,480 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:30:52,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 14:30:52,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 14:30:52,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:30:52,502 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-18 14:30:53,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:30:53,799 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-18 14:30:53,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 14:30:53,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-11-18 14:30:53,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:30:53,813 INFO L225 Difference]: With dead ends: 894 [2018-11-18 14:30:53,814 INFO L226 Difference]: Without dead ends: 633 [2018-11-18 14:30:53,819 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:30:53,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-18 14:30:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-18 14:30:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-18 14:30:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-11-18 14:30:53,877 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 64 [2018-11-18 14:30:53,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:30:53,878 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-11-18 14:30:53,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 14:30:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-11-18 14:30:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-18 14:30:53,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:30:53,887 INFO L375 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, 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] [2018-11-18 14:30:53,887 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:30:53,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:30:53,888 INFO L82 PathProgramCache]: Analyzing trace with hash 835688739, now seen corresponding path program 1 times [2018-11-18 14:30:53,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:30:53,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:30:53,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:30:53,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:30:53,889 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:30:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:30:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:30:54,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:30:54,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 14:30:54,046 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:30:54,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 14:30:54,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 14:30:54,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:30:54,048 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-11-18 14:30:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:30:55,111 INFO L93 Difference]: Finished difference Result 2358 states and 3926 transitions. [2018-11-18 14:30:55,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 14:30:55,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-11-18 14:30:55,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:30:55,122 INFO L225 Difference]: With dead ends: 2358 [2018-11-18 14:30:55,123 INFO L226 Difference]: Without dead ends: 1731 [2018-11-18 14:30:55,128 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:30:55,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-18 14:30:55,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-18 14:30:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-18 14:30:55,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2621 transitions. [2018-11-18 14:30:55,191 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2621 transitions. Word has length 177 [2018-11-18 14:30:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:30:55,191 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2621 transitions. [2018-11-18 14:30:55,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 14:30:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2621 transitions. [2018-11-18 14:30:55,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-11-18 14:30:55,200 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:30:55,201 INFO L375 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:30:55,201 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:30:55,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:30:55,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1405952572, now seen corresponding path program 1 times [2018-11-18 14:30:55,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:30:55,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:30:55,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:30:55,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:30:55,203 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:30:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:30:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:30:55,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:30:55,433 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:30:55,434 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-11-18 14:30:55,436 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:30:55,471 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:30:55,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:30:55,762 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 14:30:55,764 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Performed 1024 root evaluator evaluations with a maximum evaluation depth of 3. Performed 1024 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 24 variables. [2018-11-18 14:30:55,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:30:55,794 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 14:30:56,175 INFO L227 lantSequenceWeakener]: Weakened 251 states. On average, predicates are now at 78.14% of their original sizes. [2018-11-18 14:30:56,175 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 14:30:56,232 INFO L415 sIntCurrentIteration]: We unified 259 AI predicates to 259 [2018-11-18 14:30:56,234 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 14:30:56,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 14:30:56,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-18 14:30:56,235 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:30:56,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 14:30:56,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 14:30:56,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:30:56,236 INFO L87 Difference]: Start difference. First operand 1731 states and 2621 transitions. Second operand 6 states. [2018-11-18 14:31:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:31:06,580 INFO L93 Difference]: Finished difference Result 3641 states and 5476 transitions. [2018-11-18 14:31:06,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 14:31:06,581 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 260 [2018-11-18 14:31:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:31:06,590 INFO L225 Difference]: With dead ends: 3641 [2018-11-18 14:31:06,590 INFO L226 Difference]: Without dead ends: 1916 [2018-11-18 14:31:06,595 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 260 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 14:31:06,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-11-18 14:31:06,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-11-18 14:31:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-11-18 14:31:06,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2811 transitions. [2018-11-18 14:31:06,644 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2811 transitions. Word has length 260 [2018-11-18 14:31:06,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:31:06,644 INFO L480 AbstractCegarLoop]: Abstraction has 1914 states and 2811 transitions. [2018-11-18 14:31:06,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 14:31:06,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2811 transitions. [2018-11-18 14:31:06,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2018-11-18 14:31:06,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:31:06,653 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-18 14:31:06,654 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:31:06,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:31:06,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1712998387, now seen corresponding path program 1 times [2018-11-18 14:31:06,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:31:06,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:31:06,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:31:06,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:31:06,655 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:31:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:31:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 258 proven. 161 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 14:31:07,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:31:07,193 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:31:07,193 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 346 with the following transitions: [2018-11-18 14:31:07,194 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:31:07,198 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:31:07,198 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:31:07,385 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 14:31:07,385 INFO L272 AbstractInterpreter]: Visited 121 different actions 235 times. Merged at 4 different actions 4 times. Never widened. Performed 2103 root evaluator evaluations with a maximum evaluation depth of 3. Performed 2103 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-18 14:31:07,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:31:07,402 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 14:31:07,797 INFO L227 lantSequenceWeakener]: Weakened 342 states. On average, predicates are now at 77.98% of their original sizes. [2018-11-18 14:31:07,797 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 14:31:07,873 INFO L415 sIntCurrentIteration]: We unified 344 AI predicates to 344 [2018-11-18 14:31:07,873 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 14:31:07,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 14:31:07,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-18 14:31:07,874 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:31:07,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 14:31:07,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 14:31:07,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-18 14:31:07,875 INFO L87 Difference]: Start difference. First operand 1914 states and 2811 transitions. Second operand 10 states. [2018-11-18 14:31:39,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:31:39,142 INFO L93 Difference]: Finished difference Result 4387 states and 6380 transitions. [2018-11-18 14:31:39,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 14:31:39,143 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 345 [2018-11-18 14:31:39,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:31:39,150 INFO L225 Difference]: With dead ends: 4387 [2018-11-18 14:31:39,151 INFO L226 Difference]: Without dead ends: 2662 [2018-11-18 14:31:39,154 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 353 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-18 14:31:39,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2018-11-18 14:31:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2659. [2018-11-18 14:31:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2659 states. [2018-11-18 14:31:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2659 states to 2659 states and 3644 transitions. [2018-11-18 14:31:39,189 INFO L78 Accepts]: Start accepts. Automaton has 2659 states and 3644 transitions. Word has length 345 [2018-11-18 14:31:39,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:31:39,190 INFO L480 AbstractCegarLoop]: Abstraction has 2659 states and 3644 transitions. [2018-11-18 14:31:39,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 14:31:39,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2659 states and 3644 transitions. [2018-11-18 14:31:39,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2018-11-18 14:31:39,196 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:31:39,196 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:31:39,196 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:31:39,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:31:39,197 INFO L82 PathProgramCache]: Analyzing trace with hash -716872552, now seen corresponding path program 1 times [2018-11-18 14:31:39,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:31:39,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:31:39,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:31:39,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:31:39,198 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:31:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:31:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-11-18 14:31:39,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:31:39,351 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:31:39,351 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 397 with the following transitions: [2018-11-18 14:31:39,351 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:31:39,354 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:31:39,355 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:31:39,509 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 14:31:39,509 INFO L272 AbstractInterpreter]: Visited 143 different actions 280 times. Merged at 5 different actions 5 times. Never widened. Performed 2658 root evaluator evaluations with a maximum evaluation depth of 13. Performed 2658 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-18 14:31:39,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:31:39,514 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 14:31:39,722 INFO L227 lantSequenceWeakener]: Weakened 393 states. On average, predicates are now at 77.89% of their original sizes. [2018-11-18 14:31:39,723 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 14:31:39,778 INFO L415 sIntCurrentIteration]: We unified 395 AI predicates to 395 [2018-11-18 14:31:39,778 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 14:31:39,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 14:31:39,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-18 14:31:39,779 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:31:39,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 14:31:39,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 14:31:39,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-18 14:31:39,779 INFO L87 Difference]: Start difference. First operand 2659 states and 3644 transitions. Second operand 10 states. [2018-11-18 14:31:54,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:31:54,060 INFO L93 Difference]: Finished difference Result 5317 states and 7330 transitions. [2018-11-18 14:31:54,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 14:31:54,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 396 [2018-11-18 14:31:54,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:31:54,069 INFO L225 Difference]: With dead ends: 5317 [2018-11-18 14:31:54,069 INFO L226 Difference]: Without dead ends: 2847 [2018-11-18 14:31:54,074 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-18 14:31:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2018-11-18 14:31:54,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2844. [2018-11-18 14:31:54,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2844 states. [2018-11-18 14:31:54,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 3843 transitions. [2018-11-18 14:31:54,123 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 3843 transitions. Word has length 396 [2018-11-18 14:31:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:31:54,124 INFO L480 AbstractCegarLoop]: Abstraction has 2844 states and 3843 transitions. [2018-11-18 14:31:54,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 14:31:54,124 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 3843 transitions. [2018-11-18 14:31:54,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2018-11-18 14:31:54,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:31:54,133 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:31:54,133 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:31:54,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:31:54,134 INFO L82 PathProgramCache]: Analyzing trace with hash 2056592459, now seen corresponding path program 1 times [2018-11-18 14:31:54,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:31:54,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:31:54,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:31:54,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:31:54,136 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:31:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:31:54,446 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 309 proven. 124 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-18 14:31:54,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:31:54,446 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:31:54,447 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 398 with the following transitions: [2018-11-18 14:31:54,447 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:31:54,449 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:31:54,449 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:31:58,150 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 14:31:58,150 INFO L272 AbstractInterpreter]: Visited 121 different actions 356 times. Merged at 7 different actions 15 times. Never widened. Performed 3336 root evaluator evaluations with a maximum evaluation depth of 21. Performed 3336 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-18 14:31:58,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:31:58,158 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 14:31:58,971 INFO L227 lantSequenceWeakener]: Weakened 394 states. On average, predicates are now at 80.54% of their original sizes. [2018-11-18 14:31:58,971 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 14:31:59,008 INFO L415 sIntCurrentIteration]: We unified 396 AI predicates to 396 [2018-11-18 14:31:59,009 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 14:31:59,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 14:31:59,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-18 14:31:59,009 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:31:59,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 14:31:59,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 14:31:59,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-18 14:31:59,010 INFO L87 Difference]: Start difference. First operand 2844 states and 3843 transitions. Second operand 9 states. [2018-11-18 14:32:13,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:32:13,507 INFO L93 Difference]: Finished difference Result 5999 states and 8542 transitions. [2018-11-18 14:32:13,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 14:32:13,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 397 [2018-11-18 14:32:13,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:32:13,518 INFO L225 Difference]: With dead ends: 5999 [2018-11-18 14:32:13,518 INFO L226 Difference]: Without dead ends: 3529 [2018-11-18 14:32:13,525 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 403 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-18 14:32:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2018-11-18 14:32:13,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 3499. [2018-11-18 14:32:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3499 states. [2018-11-18 14:32:13,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3499 states to 3499 states and 4687 transitions. [2018-11-18 14:32:13,592 INFO L78 Accepts]: Start accepts. Automaton has 3499 states and 4687 transitions. Word has length 397 [2018-11-18 14:32:13,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:32:13,592 INFO L480 AbstractCegarLoop]: Abstraction has 3499 states and 4687 transitions. [2018-11-18 14:32:13,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 14:32:13,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3499 states and 4687 transitions. [2018-11-18 14:32:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-11-18 14:32:13,602 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:32:13,602 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:13,602 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:32:13,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,603 INFO L82 PathProgramCache]: Analyzing trace with hash -459172996, now seen corresponding path program 1 times [2018-11-18 14:32:13,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:32:13,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:13,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,604 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:32:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 538 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-18 14:32:13,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:13,900 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:32:13,900 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 483 with the following transitions: [2018-11-18 14:32:13,901 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:32:13,903 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:32:13,903 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:32:20,911 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:32:20,911 INFO L272 AbstractInterpreter]: Visited 123 different actions 490 times. Merged at 9 different actions 34 times. Never widened. Performed 4605 root evaluator evaluations with a maximum evaluation depth of 21. Performed 4605 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 9 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-18 14:32:20,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:20,915 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:32:20,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:20,915 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/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 [2018-11-18 14:32:20,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:20,923 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:32:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:21,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:21,298 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 538 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-18 14:32:21,298 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:32:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 538 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-18 14:32:21,593 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:32:21,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-18 14:32:21,593 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:32:21,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 14:32:21,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 14:32:21,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-18 14:32:21,595 INFO L87 Difference]: Start difference. First operand 3499 states and 4687 transitions. Second operand 9 states. [2018-11-18 14:32:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:32:27,287 INFO L93 Difference]: Finished difference Result 11140 states and 17469 transitions. [2018-11-18 14:32:27,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-18 14:32:27,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 482 [2018-11-18 14:32:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:32:27,315 INFO L225 Difference]: With dead ends: 11140 [2018-11-18 14:32:27,316 INFO L226 Difference]: Without dead ends: 7646 [2018-11-18 14:32:27,330 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 989 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=425, Invalid=1555, Unknown=0, NotChecked=0, Total=1980 [2018-11-18 14:32:27,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7646 states. [2018-11-18 14:32:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7646 to 7593. [2018-11-18 14:32:27,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7593 states. [2018-11-18 14:32:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7593 states to 7593 states and 10695 transitions. [2018-11-18 14:32:27,469 INFO L78 Accepts]: Start accepts. Automaton has 7593 states and 10695 transitions. Word has length 482 [2018-11-18 14:32:27,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:32:27,470 INFO L480 AbstractCegarLoop]: Abstraction has 7593 states and 10695 transitions. [2018-11-18 14:32:27,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 14:32:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7593 states and 10695 transitions. [2018-11-18 14:32:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2018-11-18 14:32:27,489 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:32:27,490 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:27,490 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:32:27,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:27,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1729058601, now seen corresponding path program 1 times [2018-11-18 14:32:27,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:32:27,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:27,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:27,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:27,491 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:32:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 446 proven. 136 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2018-11-18 14:32:27,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:27,804 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:32:27,804 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 552 with the following transitions: [2018-11-18 14:32:27,805 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [494], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:32:27,807 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:32:27,807 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:32:32,012 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:32:32,012 INFO L272 AbstractInterpreter]: Visited 124 different actions 492 times. Merged at 9 different actions 32 times. Widened at 1 different actions 1 times. Performed 4720 root evaluator evaluations with a maximum evaluation depth of 21. Performed 4720 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-18 14:32:32,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:32,014 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:32:32,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:32,014 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/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 [2018-11-18 14:32:32,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:32,021 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:32:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:32,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 839 proven. 2 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2018-11-18 14:32:32,259 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:32:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1148 backedges. 446 proven. 136 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2018-11-18 14:32:32,442 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:32:32,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-18 14:32:32,443 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:32:32,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 14:32:32,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 14:32:32,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-18 14:32:32,444 INFO L87 Difference]: Start difference. First operand 7593 states and 10695 transitions. Second operand 10 states. [2018-11-18 14:32:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:32:35,003 INFO L93 Difference]: Finished difference Result 29151 states and 48053 transitions. [2018-11-18 14:32:35,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-18 14:32:35,004 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 551 [2018-11-18 14:32:35,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:32:35,136 INFO L225 Difference]: With dead ends: 29151 [2018-11-18 14:32:35,136 INFO L226 Difference]: Without dead ends: 20770 [2018-11-18 14:32:35,234 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1114 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2018-11-18 14:32:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20770 states. [2018-11-18 14:32:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20770 to 20607. [2018-11-18 14:32:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20607 states. [2018-11-18 14:32:35,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20607 states to 20607 states and 30127 transitions. [2018-11-18 14:32:35,835 INFO L78 Accepts]: Start accepts. Automaton has 20607 states and 30127 transitions. Word has length 551 [2018-11-18 14:32:35,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:32:35,836 INFO L480 AbstractCegarLoop]: Abstraction has 20607 states and 30127 transitions. [2018-11-18 14:32:35,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 14:32:35,836 INFO L276 IsEmpty]: Start isEmpty. Operand 20607 states and 30127 transitions. [2018-11-18 14:32:35,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-11-18 14:32:35,877 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:32:35,877 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:35,877 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:32:35,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:35,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2113671612, now seen corresponding path program 1 times [2018-11-18 14:32:35,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:32:35,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:35,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:35,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:35,879 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:32:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 670 proven. 2 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2018-11-18 14:32:36,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:36,202 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:32:36,202 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 555 with the following transitions: [2018-11-18 14:32:36,203 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:32:36,204 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:32:36,204 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:32:40,529 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:32:40,529 INFO L272 AbstractInterpreter]: Visited 124 different actions 491 times. Merged at 9 different actions 31 times. Never widened. Performed 4718 root evaluator evaluations with a maximum evaluation depth of 21. Performed 4718 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 8 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-18 14:32:40,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:40,531 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:32:40,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:40,531 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/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 [2018-11-18 14:32:40,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:40,538 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:32:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:40,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 670 proven. 2 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2018-11-18 14:32:40,799 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:32:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1160 backedges. 670 proven. 2 refuted. 0 times theorem prover too weak. 488 trivial. 0 not checked. [2018-11-18 14:32:40,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:32:40,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-18 14:32:40,993 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:32:40,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 14:32:40,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 14:32:40,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-18 14:32:40,994 INFO L87 Difference]: Start difference. First operand 20607 states and 30127 transitions. Second operand 9 states. [2018-11-18 14:32:42,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:32:42,730 INFO L93 Difference]: Finished difference Result 42743 states and 67882 transitions. [2018-11-18 14:32:42,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 14:32:42,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 554 [2018-11-18 14:32:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:32:42,805 INFO L225 Difference]: With dead ends: 42743 [2018-11-18 14:32:42,805 INFO L226 Difference]: Without dead ends: 17375 [2018-11-18 14:32:42,905 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1111 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2018-11-18 14:32:42,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17375 states. [2018-11-18 14:32:43,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17375 to 17078. [2018-11-18 14:32:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17078 states. [2018-11-18 14:32:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17078 states to 17078 states and 23927 transitions. [2018-11-18 14:32:43,227 INFO L78 Accepts]: Start accepts. Automaton has 17078 states and 23927 transitions. Word has length 554 [2018-11-18 14:32:43,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:32:43,227 INFO L480 AbstractCegarLoop]: Abstraction has 17078 states and 23927 transitions. [2018-11-18 14:32:43,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 14:32:43,228 INFO L276 IsEmpty]: Start isEmpty. Operand 17078 states and 23927 transitions. [2018-11-18 14:32:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-11-18 14:32:43,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:32:43,240 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:43,240 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:32:43,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:43,240 INFO L82 PathProgramCache]: Analyzing trace with hash -418272360, now seen corresponding path program 1 times [2018-11-18 14:32:43,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:32:43,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:43,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:43,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:43,241 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:32:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 604 proven. 409 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-11-18 14:32:43,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:43,904 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:32:43,904 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 559 with the following transitions: [2018-11-18 14:32:43,904 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:32:43,906 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:32:43,906 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:32:51,609 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:32:51,610 INFO L272 AbstractInterpreter]: Visited 125 different actions 496 times. Merged at 10 different actions 32 times. Never widened. Performed 4790 root evaluator evaluations with a maximum evaluation depth of 22. Performed 4790 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 8 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-18 14:32:51,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:51,614 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:32:51,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:51,614 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/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 [2018-11-18 14:32:51,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:51,622 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:32:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:51,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2018-11-18 14:32:51,850 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:32:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1169 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2018-11-18 14:32:52,079 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-18 14:32:52,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 16 [2018-11-18 14:32:52,080 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:32:52,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:32:52,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:32:52,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-18 14:32:52,081 INFO L87 Difference]: Start difference. First operand 17078 states and 23927 transitions. Second operand 3 states. [2018-11-18 14:32:52,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:32:52,866 INFO L93 Difference]: Finished difference Result 36879 states and 53232 transitions. [2018-11-18 14:32:52,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:32:52,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 558 [2018-11-18 14:32:52,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:32:52,940 INFO L225 Difference]: With dead ends: 36879 [2018-11-18 14:32:52,940 INFO L226 Difference]: Without dead ends: 19990 [2018-11-18 14:32:52,999 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 1117 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-11-18 14:32:53,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19990 states. [2018-11-18 14:32:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19990 to 19436. [2018-11-18 14:32:53,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19436 states. [2018-11-18 14:32:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19436 states to 19436 states and 27439 transitions. [2018-11-18 14:32:53,315 INFO L78 Accepts]: Start accepts. Automaton has 19436 states and 27439 transitions. Word has length 558 [2018-11-18 14:32:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:32:53,316 INFO L480 AbstractCegarLoop]: Abstraction has 19436 states and 27439 transitions. [2018-11-18 14:32:53,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:32:53,316 INFO L276 IsEmpty]: Start isEmpty. Operand 19436 states and 27439 transitions. [2018-11-18 14:32:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2018-11-18 14:32:53,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:32:53,329 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:53,330 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:32:53,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:53,330 INFO L82 PathProgramCache]: Analyzing trace with hash 350716359, now seen corresponding path program 1 times [2018-11-18 14:32:53,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:32:53,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:53,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:53,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:53,331 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:32:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 604 proven. 447 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-11-18 14:32:53,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:53,952 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:32:53,953 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 578 with the following transitions: [2018-11-18 14:32:53,953 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:32:53,954 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:32:53,954 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:33:01,816 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:33:01,816 INFO L272 AbstractInterpreter]: Visited 125 different actions 497 times. Merged at 10 different actions 33 times. Never widened. Performed 4768 root evaluator evaluations with a maximum evaluation depth of 22. Performed 4768 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-18 14:33:01,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:01,817 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:33:01,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:01,817 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/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 [2018-11-18 14:33:01,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:01,824 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:33:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:01,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:33:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2018-11-18 14:33:01,999 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:33:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 929 trivial. 0 not checked. [2018-11-18 14:33:02,140 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-18 14:33:02,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2018-11-18 14:33:02,140 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:33:02,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:33:02,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:33:02,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-11-18 14:33:02,141 INFO L87 Difference]: Start difference. First operand 19436 states and 27439 transitions. Second operand 3 states. [2018-11-18 14:33:02,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:33:02,774 INFO L93 Difference]: Finished difference Result 38498 states and 55101 transitions. [2018-11-18 14:33:02,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:33:02,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 577 [2018-11-18 14:33:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:33:02,852 INFO L225 Difference]: With dead ends: 38498 [2018-11-18 14:33:02,853 INFO L226 Difference]: Without dead ends: 19436 [2018-11-18 14:33:02,936 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1169 GetRequests, 1154 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-11-18 14:33:02,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19436 states. [2018-11-18 14:33:03,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19436 to 19436. [2018-11-18 14:33:03,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19436 states. [2018-11-18 14:33:03,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19436 states to 19436 states and 26737 transitions. [2018-11-18 14:33:03,281 INFO L78 Accepts]: Start accepts. Automaton has 19436 states and 26737 transitions. Word has length 577 [2018-11-18 14:33:03,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:33:03,282 INFO L480 AbstractCegarLoop]: Abstraction has 19436 states and 26737 transitions. [2018-11-18 14:33:03,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:33:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 19436 states and 26737 transitions. [2018-11-18 14:33:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2018-11-18 14:33:03,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:33:03,293 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:33:03,293 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:33:03,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:03,293 INFO L82 PathProgramCache]: Analyzing trace with hash 154409739, now seen corresponding path program 1 times [2018-11-18 14:33:03,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:33:03,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:33:03,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:03,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:33:03,294 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:33:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 604 proven. 458 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2018-11-18 14:33:04,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:04,002 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:33:04,002 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 592 with the following transitions: [2018-11-18 14:33:04,002 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [691], [694], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:33:04,004 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:33:04,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:33:11,666 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:33:11,666 INFO L272 AbstractInterpreter]: Visited 132 different actions 522 times. Merged at 9 different actions 30 times. Never widened. Performed 5184 root evaluator evaluations with a maximum evaluation depth of 22. Performed 5184 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-18 14:33:11,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:11,668 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:33:11,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:11,668 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/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 [2018-11-18 14:33:11,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:11,676 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:33:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:11,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:33:12,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 932 proven. 2 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2018-11-18 14:33:12,082 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:33:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 598 proven. 112 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2018-11-18 14:33:12,458 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:33:12,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-18 14:33:12,458 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:33:12,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 14:33:12,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 14:33:12,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-18 14:33:12,460 INFO L87 Difference]: Start difference. First operand 19436 states and 26737 transitions. Second operand 17 states. [2018-11-18 14:33:16,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:33:16,055 INFO L93 Difference]: Finished difference Result 39889 states and 60046 transitions. [2018-11-18 14:33:16,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 14:33:16,055 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 591 [2018-11-18 14:33:16,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:33:16,154 INFO L225 Difference]: With dead ends: 39889 [2018-11-18 14:33:16,154 INFO L226 Difference]: Without dead ends: 19049 [2018-11-18 14:33:16,266 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1240 GetRequests, 1193 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 14:33:16,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19049 states. [2018-11-18 14:33:16,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19049 to 17754. [2018-11-18 14:33:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17754 states. [2018-11-18 14:33:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17754 states to 17754 states and 22427 transitions. [2018-11-18 14:33:16,676 INFO L78 Accepts]: Start accepts. Automaton has 17754 states and 22427 transitions. Word has length 591 [2018-11-18 14:33:16,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:33:16,677 INFO L480 AbstractCegarLoop]: Abstraction has 17754 states and 22427 transitions. [2018-11-18 14:33:16,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 14:33:16,677 INFO L276 IsEmpty]: Start isEmpty. Operand 17754 states and 22427 transitions. [2018-11-18 14:33:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2018-11-18 14:33:16,688 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:33:16,688 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-18 14:33:16,689 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:33:16,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:16,689 INFO L82 PathProgramCache]: Analyzing trace with hash -341518496, now seen corresponding path program 1 times [2018-11-18 14:33:16,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:33:16,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:33:16,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:16,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:33:16,690 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:33:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 607 proven. 150 refuted. 0 times theorem prover too weak. 1099 trivial. 0 not checked. [2018-11-18 14:33:17,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:17,132 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:33:17,132 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 781 with the following transitions: [2018-11-18 14:33:17,132 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:33:17,134 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:33:17,134 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:33:21,544 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:33:21,545 INFO L272 AbstractInterpreter]: Visited 193 different actions 772 times. Merged at 10 different actions 36 times. Never widened. Performed 8455 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8455 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 11 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-18 14:33:21,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:21,546 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:33:21,546 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:21,546 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:33:21,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:21,552 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:33:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:21,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:33:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 1293 proven. 2 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2018-11-18 14:33:21,785 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:33:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1856 backedges. 607 proven. 150 refuted. 0 times theorem prover too weak. 1099 trivial. 0 not checked. [2018-11-18 14:33:22,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:33:22,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-18 14:33:22,006 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:33:22,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 14:33:22,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 14:33:22,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-18 14:33:22,008 INFO L87 Difference]: Start difference. First operand 17754 states and 22427 transitions. Second operand 7 states. [2018-11-18 14:33:22,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:33:22,917 INFO L93 Difference]: Finished difference Result 38853 states and 51947 transitions. [2018-11-18 14:33:22,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 14:33:22,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 780 [2018-11-18 14:33:22,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:33:22,986 INFO L225 Difference]: With dead ends: 38853 [2018-11-18 14:33:22,986 INFO L226 Difference]: Without dead ends: 21473 [2018-11-18 14:33:23,041 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1573 GetRequests, 1561 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-18 14:33:23,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21473 states. [2018-11-18 14:33:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21473 to 21072. [2018-11-18 14:33:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21072 states. [2018-11-18 14:33:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21072 states to 21072 states and 27249 transitions. [2018-11-18 14:33:23,390 INFO L78 Accepts]: Start accepts. Automaton has 21072 states and 27249 transitions. Word has length 780 [2018-11-18 14:33:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:33:23,390 INFO L480 AbstractCegarLoop]: Abstraction has 21072 states and 27249 transitions. [2018-11-18 14:33:23,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 14:33:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 21072 states and 27249 transitions. [2018-11-18 14:33:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2018-11-18 14:33:23,400 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:33:23,401 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-18 14:33:23,401 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:33:23,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:23,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1567693228, now seen corresponding path program 1 times [2018-11-18 14:33:23,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:33:23,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:33:23,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:23,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:33:23,402 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:33:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:25,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2627 backedges. 786 proven. 1166 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2018-11-18 14:33:25,300 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:25,300 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:33:25,301 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 959 with the following transitions: [2018-11-18 14:33:25,301 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:33:25,303 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:33:25,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:33:29,696 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:33:29,697 INFO L272 AbstractInterpreter]: Visited 194 different actions 787 times. Merged at 11 different actions 47 times. Widened at 1 different actions 2 times. Performed 8631 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8631 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 13 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-18 14:33:29,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:29,702 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:33:29,702 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:29,702 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:33:29,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:29,710 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:33:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:29,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:33:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2627 backedges. 1852 proven. 2 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-11-18 14:33:30,198 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:33:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2627 backedges. 787 proven. 368 refuted. 0 times theorem prover too weak. 1472 trivial. 0 not checked. [2018-11-18 14:33:30,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:33:30,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-18 14:33:30,846 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:33:30,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 14:33:30,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 14:33:30,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-18 14:33:30,847 INFO L87 Difference]: Start difference. First operand 21072 states and 27249 transitions. Second operand 18 states. [2018-11-18 14:33:35,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:33:35,698 INFO L93 Difference]: Finished difference Result 42531 states and 55452 transitions. [2018-11-18 14:33:35,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-18 14:33:35,698 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 958 [2018-11-18 14:33:35,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:33:35,745 INFO L225 Difference]: With dead ends: 42531 [2018-11-18 14:33:35,745 INFO L226 Difference]: Without dead ends: 20048 [2018-11-18 14:33:35,812 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2012 GetRequests, 1946 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=911, Invalid=3645, Unknown=0, NotChecked=0, Total=4556 [2018-11-18 14:33:35,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20048 states. [2018-11-18 14:33:36,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20048 to 19608. [2018-11-18 14:33:36,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19608 states. [2018-11-18 14:33:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19608 states to 19608 states and 23974 transitions. [2018-11-18 14:33:36,091 INFO L78 Accepts]: Start accepts. Automaton has 19608 states and 23974 transitions. Word has length 958 [2018-11-18 14:33:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:33:36,091 INFO L480 AbstractCegarLoop]: Abstraction has 19608 states and 23974 transitions. [2018-11-18 14:33:36,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 14:33:36,091 INFO L276 IsEmpty]: Start isEmpty. Operand 19608 states and 23974 transitions. [2018-11-18 14:33:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1004 [2018-11-18 14:33:36,106 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:33:36,107 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:33:36,107 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:33:36,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:36,107 INFO L82 PathProgramCache]: Analyzing trace with hash 408254019, now seen corresponding path program 1 times [2018-11-18 14:33:36,107 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:33:36,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:33:36,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:36,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:33:36,108 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:33:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:38,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2719 backedges. 1052 proven. 1059 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2018-11-18 14:33:38,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:38,617 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:33:38,617 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1004 with the following transitions: [2018-11-18 14:33:38,618 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:33:38,620 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:33:38,620 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:33:43,161 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:33:43,162 INFO L272 AbstractInterpreter]: Visited 194 different actions 781 times. Merged at 11 different actions 41 times. Widened at 1 different actions 1 times. Performed 8566 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8566 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 13 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-18 14:33:43,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:43,163 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:33:43,163 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:43,163 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:33:43,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:43,171 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:33:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:43,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:33:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2719 backedges. 1070 proven. 2 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2018-11-18 14:33:43,703 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:33:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2719 backedges. 1070 proven. 2 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2018-11-18 14:33:44,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:33:44,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 19 [2018-11-18 14:33:44,484 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:33:44,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 14:33:44,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 14:33:44,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-11-18 14:33:44,485 INFO L87 Difference]: Start difference. First operand 19608 states and 23974 transitions. Second operand 18 states. [2018-11-18 14:33:47,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:33:47,350 INFO L93 Difference]: Finished difference Result 39090 states and 47988 transitions. [2018-11-18 14:33:47,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-18 14:33:47,351 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1003 [2018-11-18 14:33:47,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:33:47,398 INFO L225 Difference]: With dead ends: 39090 [2018-11-18 14:33:47,398 INFO L226 Difference]: Without dead ends: 18399 [2018-11-18 14:33:47,448 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2101 GetRequests, 2039 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=635, Invalid=2787, Unknown=0, NotChecked=0, Total=3422 [2018-11-18 14:33:47,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18399 states. [2018-11-18 14:33:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18399 to 18163. [2018-11-18 14:33:47,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18163 states. [2018-11-18 14:33:47,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18163 states to 18163 states and 21176 transitions. [2018-11-18 14:33:47,714 INFO L78 Accepts]: Start accepts. Automaton has 18163 states and 21176 transitions. Word has length 1003 [2018-11-18 14:33:47,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:33:47,715 INFO L480 AbstractCegarLoop]: Abstraction has 18163 states and 21176 transitions. [2018-11-18 14:33:47,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 14:33:47,715 INFO L276 IsEmpty]: Start isEmpty. Operand 18163 states and 21176 transitions. [2018-11-18 14:33:47,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1084 [2018-11-18 14:33:47,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:33:47,728 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:33:47,728 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:33:47,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:47,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1667096333, now seen corresponding path program 1 times [2018-11-18 14:33:47,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:33:47,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:33:47,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:47,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:33:47,730 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:33:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3333 backedges. 1201 proven. 1947 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2018-11-18 14:33:50,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:50,568 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:33:50,569 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1084 with the following transitions: [2018-11-18 14:33:50,569 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:33:50,571 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:33:50,571 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:33:54,877 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:33:54,878 INFO L272 AbstractInterpreter]: Visited 195 different actions 786 times. Merged at 12 different actions 42 times. Widened at 1 different actions 1 times. Performed 8607 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8607 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 14 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-18 14:33:54,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:33:54,882 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:33:54,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:33:54,882 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:33:54,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:33:54,891 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:33:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:33:55,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:33:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3333 backedges. 1210 proven. 2 refuted. 0 times theorem prover too weak. 2121 trivial. 0 not checked. [2018-11-18 14:33:55,567 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:33:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3333 backedges. 1210 proven. 2 refuted. 0 times theorem prover too weak. 2121 trivial. 0 not checked. [2018-11-18 14:33:56,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:33:56,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 5, 5] total 33 [2018-11-18 14:33:56,670 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:33:56,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-18 14:33:56,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-18 14:33:56,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2018-11-18 14:33:56,672 INFO L87 Difference]: Start difference. First operand 18163 states and 21176 transitions. Second operand 31 states. [2018-11-18 14:34:07,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:34:07,769 INFO L93 Difference]: Finished difference Result 36847 states and 44969 transitions. [2018-11-18 14:34:07,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-11-18 14:34:07,769 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 1083 [2018-11-18 14:34:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:34:07,816 INFO L225 Difference]: With dead ends: 36847 [2018-11-18 14:34:07,816 INFO L226 Difference]: Without dead ends: 18800 [2018-11-18 14:34:07,855 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2338 GetRequests, 2211 SyntacticMatches, 7 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4757 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2332, Invalid=12430, Unknown=0, NotChecked=0, Total=14762 [2018-11-18 14:34:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18800 states. [2018-11-18 14:34:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18800 to 16614. [2018-11-18 14:34:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16614 states. [2018-11-18 14:34:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16614 states to 16614 states and 18273 transitions. [2018-11-18 14:34:08,086 INFO L78 Accepts]: Start accepts. Automaton has 16614 states and 18273 transitions. Word has length 1083 [2018-11-18 14:34:08,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:34:08,087 INFO L480 AbstractCegarLoop]: Abstraction has 16614 states and 18273 transitions. [2018-11-18 14:34:08,087 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-18 14:34:08,087 INFO L276 IsEmpty]: Start isEmpty. Operand 16614 states and 18273 transitions. [2018-11-18 14:34:08,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2018-11-18 14:34:08,098 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:34:08,099 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:34:08,099 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:34:08,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:34:08,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1493500224, now seen corresponding path program 1 times [2018-11-18 14:34:08,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:34:08,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:34:08,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:34:08,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:34:08,100 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:34:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:34:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3375 backedges. 1212 proven. 606 refuted. 0 times theorem prover too weak. 1557 trivial. 0 not checked. [2018-11-18 14:34:09,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:34:09,534 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:34:09,534 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1091 with the following transitions: [2018-11-18 14:34:09,534 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:34:09,536 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:34:09,536 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:34:14,046 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:34:14,046 INFO L272 AbstractInterpreter]: Visited 195 different actions 784 times. Merged at 11 different actions 40 times. Widened at 1 different actions 1 times. Performed 8629 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8629 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 14 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-18 14:34:14,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:34:14,047 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:34:14,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:34:14,047 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:34:14,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:34:14,055 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:34:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:34:14,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:34:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3375 backedges. 1217 proven. 2 refuted. 0 times theorem prover too weak. 2156 trivial. 0 not checked. [2018-11-18 14:34:14,554 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:34:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3375 backedges. 1217 proven. 2 refuted. 0 times theorem prover too weak. 2156 trivial. 0 not checked. [2018-11-18 14:34:14,966 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:34:14,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 21 [2018-11-18 14:34:14,966 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:34:14,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-18 14:34:14,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-18 14:34:14,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-11-18 14:34:14,967 INFO L87 Difference]: Start difference. First operand 16614 states and 18273 transitions. Second operand 19 states. [2018-11-18 14:34:18,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:34:18,118 INFO L93 Difference]: Finished difference Result 29991 states and 33227 transitions. [2018-11-18 14:34:18,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-18 14:34:18,118 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1090 [2018-11-18 14:34:18,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:34:18,125 INFO L225 Difference]: With dead ends: 29991 [2018-11-18 14:34:18,125 INFO L226 Difference]: Without dead ends: 5441 [2018-11-18 14:34:18,159 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2263 GetRequests, 2200 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=832, Invalid=3200, Unknown=0, NotChecked=0, Total=4032 [2018-11-18 14:34:18,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5441 states. [2018-11-18 14:34:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5441 to 4655. [2018-11-18 14:34:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4655 states. [2018-11-18 14:34:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4655 states to 4655 states and 4780 transitions. [2018-11-18 14:34:18,211 INFO L78 Accepts]: Start accepts. Automaton has 4655 states and 4780 transitions. Word has length 1090 [2018-11-18 14:34:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:34:18,212 INFO L480 AbstractCegarLoop]: Abstraction has 4655 states and 4780 transitions. [2018-11-18 14:34:18,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-18 14:34:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 4655 states and 4780 transitions. [2018-11-18 14:34:18,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2018-11-18 14:34:18,219 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:34:18,220 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-18 14:34:18,220 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:34:18,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:34:18,220 INFO L82 PathProgramCache]: Analyzing trace with hash -2104727652, now seen corresponding path program 1 times [2018-11-18 14:34:18,220 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:34:18,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:34:18,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:34:18,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:34:18,221 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:34:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:34:18,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3408 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 2931 trivial. 0 not checked. [2018-11-18 14:34:18,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:34:18,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 14:34:18,772 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 14:34:18,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 14:34:18,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 14:34:18,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:34:18,773 INFO L87 Difference]: Start difference. First operand 4655 states and 4780 transitions. Second operand 4 states. [2018-11-18 14:34:19,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:34:19,173 INFO L93 Difference]: Finished difference Result 9302 states and 9555 transitions. [2018-11-18 14:34:19,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 14:34:19,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1108 [2018-11-18 14:34:19,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:34:19,178 INFO L225 Difference]: With dead ends: 9302 [2018-11-18 14:34:19,178 INFO L226 Difference]: Without dead ends: 4275 [2018-11-18 14:34:19,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:34:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2018-11-18 14:34:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4092. [2018-11-18 14:34:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4092 states. [2018-11-18 14:34:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 4197 transitions. [2018-11-18 14:34:19,215 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 4197 transitions. Word has length 1108 [2018-11-18 14:34:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:34:19,216 INFO L480 AbstractCegarLoop]: Abstraction has 4092 states and 4197 transitions. [2018-11-18 14:34:19,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 14:34:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 4197 transitions. [2018-11-18 14:34:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1132 [2018-11-18 14:34:19,223 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:34:19,223 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:34:19,223 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:34:19,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:34:19,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1757943917, now seen corresponding path program 1 times [2018-11-18 14:34:19,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:34:19,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:34:19,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:34:19,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:34:19,224 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:34:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:34:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3578 backedges. 1692 proven. 355 refuted. 0 times theorem prover too weak. 1531 trivial. 0 not checked. [2018-11-18 14:34:19,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:34:19,943 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:34:19,943 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1132 with the following transitions: [2018-11-18 14:34:19,943 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:34:19,945 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:34:19,945 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:34:24,401 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:34:24,401 INFO L272 AbstractInterpreter]: Visited 195 different actions 783 times. Merged at 11 different actions 39 times. Widened at 1 different actions 1 times. Performed 8603 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8603 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 14 fixpoints after 7 different actions. Largest state had 24 variables. [2018-11-18 14:34:24,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:34:24,403 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:34:24,403 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:34:24,403 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:34:24,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:34:24,409 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:34:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:34:24,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:34:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3578 backedges. 2382 proven. 6 refuted. 0 times theorem prover too weak. 1190 trivial. 0 not checked. [2018-11-18 14:34:24,943 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:34:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3578 backedges. 1692 proven. 359 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2018-11-18 14:34:25,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:34:25,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2018-11-18 14:34:25,602 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:34:25,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 14:34:25,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 14:34:25,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-11-18 14:34:25,603 INFO L87 Difference]: Start difference. First operand 4092 states and 4197 transitions. Second operand 9 states. [2018-11-18 14:34:26,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:34:26,425 INFO L93 Difference]: Finished difference Result 6352 states and 6537 transitions. [2018-11-18 14:34:26,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 14:34:26,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1131 [2018-11-18 14:34:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:34:26,430 INFO L225 Difference]: With dead ends: 6352 [2018-11-18 14:34:26,430 INFO L226 Difference]: Without dead ends: 4301 [2018-11-18 14:34:26,433 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2282 GetRequests, 2262 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2018-11-18 14:34:26,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2018-11-18 14:34:26,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 4094. [2018-11-18 14:34:26,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4094 states. [2018-11-18 14:34:26,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 4190 transitions. [2018-11-18 14:34:26,473 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 4190 transitions. Word has length 1131 [2018-11-18 14:34:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:34:26,473 INFO L480 AbstractCegarLoop]: Abstraction has 4094 states and 4190 transitions. [2018-11-18 14:34:26,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 14:34:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 4190 transitions. [2018-11-18 14:34:26,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1409 [2018-11-18 14:34:26,484 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:34:26,484 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:34:26,485 INFO L423 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:34:26,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:34:26,485 INFO L82 PathProgramCache]: Analyzing trace with hash 848788632, now seen corresponding path program 1 times [2018-11-18 14:34:26,485 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:34:26,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:34:26,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:34:26,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:34:26,486 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:34:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:34:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5686 backedges. 1466 proven. 2755 refuted. 0 times theorem prover too weak. 1465 trivial. 0 not checked. [2018-11-18 14:34:29,046 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:34:29,046 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:34:29,046 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1409 with the following transitions: [2018-11-18 14:34:29,047 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [671], [675], [679], [683], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [906], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:34:29,048 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:34:29,049 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:34:37,680 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:34:37,680 INFO L272 AbstractInterpreter]: Visited 197 different actions 991 times. Merged at 13 different actions 53 times. Widened at 1 different actions 1 times. Performed 11405 root evaluator evaluations with a maximum evaluation depth of 22. Performed 11405 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 25 fixpoints after 8 different actions. Largest state had 24 variables. [2018-11-18 14:34:37,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:34:37,681 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:34:37,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:34:37,681 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:34:37,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:34:37,688 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:34:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:34:37,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:34:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5686 backedges. 3156 proven. 2 refuted. 0 times theorem prover too weak. 2528 trivial. 0 not checked. [2018-11-18 14:34:38,491 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:34:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5686 backedges. 1582 proven. 229 refuted. 0 times theorem prover too weak. 3875 trivial. 0 not checked. [2018-11-18 14:34:40,124 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:34:40,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5] total 23 [2018-11-18 14:34:40,125 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:34:40,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-18 14:34:40,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-18 14:34:40,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2018-11-18 14:34:40,127 INFO L87 Difference]: Start difference. First operand 4094 states and 4190 transitions. Second operand 21 states. [2018-11-18 14:34:42,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:34:42,522 INFO L93 Difference]: Finished difference Result 6197 states and 6390 transitions. [2018-11-18 14:34:42,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-18 14:34:42,522 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1408 [2018-11-18 14:34:42,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:34:42,526 INFO L225 Difference]: With dead ends: 6197 [2018-11-18 14:34:42,527 INFO L226 Difference]: Without dead ends: 4146 [2018-11-18 14:34:42,529 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2889 GetRequests, 2835 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=655, Invalid=2315, Unknown=0, NotChecked=0, Total=2970 [2018-11-18 14:34:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2018-11-18 14:34:42,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 4092. [2018-11-18 14:34:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4092 states. [2018-11-18 14:34:42,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 4183 transitions. [2018-11-18 14:34:42,564 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 4183 transitions. Word has length 1408 [2018-11-18 14:34:42,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:34:42,565 INFO L480 AbstractCegarLoop]: Abstraction has 4092 states and 4183 transitions. [2018-11-18 14:34:42,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-18 14:34:42,565 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 4183 transitions. [2018-11-18 14:34:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1689 [2018-11-18 14:34:42,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:34:42,577 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 3, 3, 3, 3, 3, 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] [2018-11-18 14:34:42,577 INFO L423 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:34:42,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:34:42,578 INFO L82 PathProgramCache]: Analyzing trace with hash 477167752, now seen corresponding path program 1 times [2018-11-18 14:34:42,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:34:42,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:34:42,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:34:42,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:34:42,578 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:34:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:34:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8324 backedges. 1936 proven. 4968 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2018-11-18 14:34:46,115 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:34:46,115 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:34:46,116 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1689 with the following transitions: [2018-11-18 14:34:46,116 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [670], [671], [675], [679], [683], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:34:46,118 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:34:46,118 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:34:50,315 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:34:50,316 INFO L272 AbstractInterpreter]: Visited 202 different actions 807 times. Merged at 12 different actions 35 times. Never widened. Performed 8953 root evaluator evaluations with a maximum evaluation depth of 21. Performed 8953 inverse root evaluator evaluations with a maximum inverse evaluation depth of 21. Found 18 fixpoints after 9 different actions. Largest state had 24 variables. [2018-11-18 14:34:50,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:34:50,318 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:34:50,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:34:50,318 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:34:50,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:34:50,324 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:34:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:34:50,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:34:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8324 backedges. 2893 proven. 127 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2018-11-18 14:34:51,443 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:34:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8324 backedges. 2935 proven. 198 refuted. 0 times theorem prover too weak. 5191 trivial. 0 not checked. [2018-11-18 14:34:53,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:34:53,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 9, 10] total 41 [2018-11-18 14:34:53,371 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:34:53,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-18 14:34:53,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-18 14:34:53,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1453, Unknown=0, NotChecked=0, Total=1640 [2018-11-18 14:34:53,373 INFO L87 Difference]: Start difference. First operand 4092 states and 4183 transitions. Second operand 34 states. [2018-11-18 14:35:03,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:35:03,760 INFO L93 Difference]: Finished difference Result 7023 states and 7233 transitions. [2018-11-18 14:35:03,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-11-18 14:35:03,760 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 1688 [2018-11-18 14:35:03,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:35:03,768 INFO L225 Difference]: With dead ends: 7023 [2018-11-18 14:35:03,768 INFO L226 Difference]: Without dead ends: 4761 [2018-11-18 14:35:03,775 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3549 GetRequests, 3406 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6243 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3241, Invalid=16499, Unknown=0, NotChecked=0, Total=19740 [2018-11-18 14:35:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4761 states. [2018-11-18 14:35:03,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4761 to 4279. [2018-11-18 14:35:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4279 states. [2018-11-18 14:35:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 4349 transitions. [2018-11-18 14:35:03,826 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 4349 transitions. Word has length 1688 [2018-11-18 14:35:03,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:35:03,827 INFO L480 AbstractCegarLoop]: Abstraction has 4279 states and 4349 transitions. [2018-11-18 14:35:03,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-18 14:35:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 4349 transitions. [2018-11-18 14:35:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2282 [2018-11-18 14:35:03,848 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:35:03,848 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 13, 13, 12, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2018-11-18 14:35:03,849 INFO L423 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:35:03,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:35:03,849 INFO L82 PathProgramCache]: Analyzing trace with hash -183099805, now seen corresponding path program 1 times [2018-11-18 14:35:03,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 14:35:03,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:35:03,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:35:03,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:35:03,850 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 14:35:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:35:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15262 backedges. 2269 proven. 8387 refuted. 0 times theorem prover too weak. 4606 trivial. 0 not checked. [2018-11-18 14:35:10,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:35:10,708 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 14:35:10,708 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 2282 with the following transitions: [2018-11-18 14:35:10,709 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [667], [670], [671], [675], [679], [683], [687], [690], [691], [694], [695], [699], [703], [707], [711], [715], [718], [719], [723], [726], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [906], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [938], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-18 14:35:10,712 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 14:35:10,712 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 14:35:19,851 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 14:35:19,851 INFO L272 AbstractInterpreter]: Visited 206 different actions 1045 times. Merged at 13 different actions 62 times. Widened at 1 different actions 3 times. Performed 12161 root evaluator evaluations with a maximum evaluation depth of 22. Performed 12161 inverse root evaluator evaluations with a maximum inverse evaluation depth of 22. Found 37 fixpoints after 13 different actions. Largest state had 24 variables. [2018-11-18 14:35:19,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:35:19,852 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 14:35:19,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:35:19,853 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:35:19,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:35:19,859 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 14:35:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:35:20,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:35:25,271 WARN L180 SmtUtils]: Spent 4.88 s on a formula simplification. DAG size of input: 484 DAG size of output: 51 [2018-11-18 14:35:27,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15262 backedges. 2618 proven. 60 refuted. 0 times theorem prover too weak. 12584 trivial. 0 not checked. [2018-11-18 14:35:27,276 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 14:35:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 15262 backedges. 2618 proven. 60 refuted. 0 times theorem prover too weak. 12584 trivial. 0 not checked. [2018-11-18 14:35:29,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 14:35:29,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 9, 8] total 44 [2018-11-18 14:35:29,768 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 14:35:29,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-18 14:35:29,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-18 14:35:29,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1664, Unknown=0, NotChecked=0, Total=1892 [2018-11-18 14:35:29,770 INFO L87 Difference]: Start difference. First operand 4279 states and 4349 transitions. Second operand 39 states. [2018-11-18 14:35:36,269 WARN L180 SmtUtils]: Spent 912.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-11-18 14:35:39,818 WARN L180 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2018-11-18 14:35:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:35:41,687 INFO L93 Difference]: Finished difference Result 4580 states and 4707 transitions. [2018-11-18 14:35:41,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-11-18 14:35:41,688 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 2281 [2018-11-18 14:35:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:35:41,690 INFO L225 Difference]: With dead ends: 4580 [2018-11-18 14:35:41,690 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 14:35:41,696 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4710 GetRequests, 4579 SyntacticMatches, 11 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4617 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2512, Invalid=12250, Unknown=0, NotChecked=0, Total=14762 [2018-11-18 14:35:41,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 14:35:41,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 14:35:41,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 14:35:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 14:35:41,696 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2281 [2018-11-18 14:35:41,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:35:41,697 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:35:41,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-18 14:35:41,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 14:35:41,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 14:35:41,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 14:35:41,736 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:41,739 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:41,764 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:41,837 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,026 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,062 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,230 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,503 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,725 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,726 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,841 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:42,842 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,222 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,239 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,261 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,319 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,365 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,374 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,466 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,537 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,609 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,741 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,754 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,760 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,783 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,812 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,873 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:43,950 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:44,071 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:44,127 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:44,274 WARN L180 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 1143 DAG size of output: 810 [2018-11-18 14:35:44,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:44,392 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:44,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:44,484 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,110 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,110 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,571 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,616 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,670 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,719 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,730 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,846 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,909 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:45,935 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:46,020 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:46,194 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:46,201 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:46,229 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:46,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:46,350 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:46,466 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:46,605 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:46,700 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-18 14:35:46,858 WARN L180 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 1164 DAG size of output: 865 [2018-11-18 14:35:48,344 WARN L180 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 475 DAG size of output: 132 [2018-11-18 14:35:53,079 WARN L180 SmtUtils]: Spent 4.72 s on a formula simplification. DAG size of input: 752 DAG size of output: 106 [2018-11-18 14:35:57,951 WARN L180 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 814 DAG size of output: 103 [2018-11-18 14:35:57,953 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 14:35:57,953 INFO L421 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~a12~0 |old(~a12~0)|) (= ~a24~0 |old(~a24~0)|) (= ~a21~0 |old(~a21~0)|) (= |old(~a15~0)| ~a15~0)) [2018-11-18 14:35:57,953 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 14:35:57,953 INFO L425 ceAbstractionStarter]: For program point L432(lines 432 870) no Hoare annotation was computed. [2018-11-18 14:35:57,953 INFO L425 ceAbstractionStarter]: For program point L366(lines 366 870) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L168-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L102-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L36-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L235(lines 235 870) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L169(line 169) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L103(line 103) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L764(lines 764 870) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L632(lines 632 870) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L500(lines 500 870) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L831(lines 831 870) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L171-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L105-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L39-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L700(lines 700 870) no Hoare annotation was computed. [2018-11-18 14:35:57,954 INFO L425 ceAbstractionStarter]: For program point L568(lines 568 870) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L172(line 172) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L106(line 106) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L40(line 40) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L305(lines 305 870) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L438(lines 438 870) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L372(lines 372 870) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L174-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L108-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L42-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L241(lines 241 870) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L175(line 175) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L109(line 109) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L638(lines 638 870) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L506(lines 506 870) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L837(lines 837 870) no Hoare annotation was computed. [2018-11-18 14:35:57,955 INFO L425 ceAbstractionStarter]: For program point L771(lines 771 870) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L573(lines 573 870) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L177-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L111-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L45-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L706(lines 706 870) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L178(line 178) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L112(line 112) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L46(line 46) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L311(lines 311 870) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L444(lines 444 870) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L378(lines 378 870) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L180-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L114-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point L48-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,956 INFO L425 ceAbstractionStarter]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L247(lines 247 870) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L181(line 181) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L115(line 115) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L842(lines 842 870) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L644(lines 644 870) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L512(lines 512 870) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L777(lines 777 870) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L579(lines 579 870) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L183-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L117-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L51-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point calculate_outputEXIT(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L712(lines 712 870) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L184(line 184) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L118(line 118) no Hoare annotation was computed. [2018-11-18 14:35:57,957 INFO L425 ceAbstractionStarter]: For program point L52(line 52) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L449(lines 449 870) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L317(lines 317 870) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L384(lines 384 870) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L252(lines 252 870) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L186-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L120-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L54-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L187(line 187) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L121(line 121) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L55(line 55) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L848(lines 848 870) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L650(lines 650 870) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L518(lines 518 870) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L783(lines 783 870) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L585(lines 585 870) no Hoare annotation was computed. [2018-11-18 14:35:57,958 INFO L425 ceAbstractionStarter]: For program point L189-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,959 INFO L425 ceAbstractionStarter]: For program point L123-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,959 INFO L425 ceAbstractionStarter]: For program point L57-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,959 INFO L425 ceAbstractionStarter]: For program point L718(lines 718 870) no Hoare annotation was computed. [2018-11-18 14:35:57,959 INFO L425 ceAbstractionStarter]: For program point L454(lines 454 870) no Hoare annotation was computed. [2018-11-18 14:35:57,959 INFO L425 ceAbstractionStarter]: For program point L190(line 190) no Hoare annotation was computed. [2018-11-18 14:35:57,959 INFO L425 ceAbstractionStarter]: For program point L124(line 124) no Hoare annotation was computed. [2018-11-18 14:35:57,959 INFO L425 ceAbstractionStarter]: For program point L58(line 58) no Hoare annotation was computed. [2018-11-18 14:35:57,959 INFO L425 ceAbstractionStarter]: For program point L323(lines 323 870) no Hoare annotation was computed. [2018-11-18 14:35:57,959 INFO L421 ceAbstractionStarter]: At program point calculate_outputENTRY(lines 20 872) the Hoare annotation is: (let ((.cse18 (= ~a24~0 |old(~a24~0)|)) (.cse19 (= |old(~a15~0)| ~a15~0)) (.cse4 (= 1 ~a24~0)) (.cse5 (= 9 ~a15~0)) (.cse2 (= ~a12~0 |old(~a12~0)|)) (.cse20 (= ~a21~0 |old(~a21~0)|)) (.cse13 (= 8 ~a15~0)) (.cse14 (= ~a24~0 1))) (let ((.cse3 (= ~a21~0 9)) (.cse0 (not (= 9 |old(~a21~0)|))) (.cse23 (not (= 10 |old(~a21~0)|))) (.cse24 (= 10 ~a21~0)) (.cse17 (not (= 6 |old(~a21~0)|))) (.cse27 (< |old(~a21~0)| 10)) (.cse12 (< 80 |old(~a12~0)|)) (.cse9 (not (= 8 |old(~a15~0)|))) (.cse10 (= |calculate_output_#in~input| 0)) (.cse11 (and .cse2 .cse20 .cse13 .cse14)) (.cse1 (not (= 9 |old(~a15~0)|))) (.cse28 (< 11 |old(~a12~0)|)) (.cse7 (and .cse2 .cse20 .cse4 .cse5)) (.cse22 (not (= 7 |old(~a21~0)|))) (.cse25 (not (= 5 |old(~a15~0)|))) (.cse26 (<= ~a12~0 |old(~a12~0)|)) (.cse15 (and .cse2 .cse18 .cse20 .cse19)) (.cse6 (not (= 1 |old(~a24~0)|))) (.cse16 (< 7 |old(~a15~0)|)) (.cse8 (not (= 8 |old(~a21~0)|)))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 .cse5) .cse6) (or .cse1 .cse7 .cse6 (< 72 |old(~a12~0)|) (<= |old(~a12~0)| 18) .cse8) (or .cse9 .cse10 .cse8 .cse11 .cse6 (< 73282 |old(~a12~0)|)) (or .cse0 .cse12 .cse6 .cse9 .cse10 (and .cse2 .cse3 .cse13 .cse14)) (or .cse12 .cse15 .cse6 .cse16 (< 7 |old(~a21~0)|)) (or .cse17 .cse1 .cse6 .cse7 (< 95434 |old(~a12~0)|) (<= |old(~a12~0)| 95380)) (or (and .cse2 .cse18 .cse3 .cse19) (or .cse0 .cse6) .cse16) (or (and (and .cse2 .cse4) .cse20 (= ~a15~0 |old(~a15~0)|)) (or (let ((.cse21 (< |old(~a12~0)| 81))) (and (or .cse21 .cse8) (or .cse22 .cse21))) .cse1 .cse6)) (or .cse23 (and .cse2 (= 7 ~a15~0) .cse4 .cse24) .cse6 (not (= 7 |old(~a15~0)|))) (or (or .cse17 (< 0 (+ |old(~a12~0)| 49)) .cse25) .cse15) (or .cse15 .cse17 .cse6 .cse16) (or (not (= 6 |old(~a15~0)|)) (and .cse26 (= |old(~a21~0)| ~a21~0) .cse19)) (or .cse23 .cse10 .cse6 .cse9 (and .cse2 .cse13 .cse14 .cse24)) (or (and .cse2 .cse20 .cse19 .cse4) .cse27 .cse6 .cse25) (or .cse7 .cse1 .cse27 .cse6 (<= |old(~a12~0)| 80)) (or .cse17 .cse11 .cse6 .cse9 .cse10) (or .cse27 .cse1 .cse6 .cse28 .cse7) (or .cse22 .cse12 .cse6 .cse9 .cse10 .cse11) (or .cse1 .cse6 .cse28 .cse8 .cse7) (or .cse22 .cse25 (and .cse26 (= 7 ~a21~0) .cse19)) (or .cse15 .cse6 .cse16 .cse8)))) [2018-11-18 14:35:57,959 INFO L425 ceAbstractionStarter]: For program point L390(lines 390 870) no Hoare annotation was computed. [2018-11-18 14:35:57,959 INFO L425 ceAbstractionStarter]: For program point L258(lines 258 870) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L192-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L126-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L60-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L193(line 193) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L127(line 127) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L61(line 61) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L854(lines 854 870) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L656(lines 656 870) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L524(lines 524 870) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L789(lines 789 870) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L591(lines 591 870) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L195-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L129-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L63-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L724(lines 724 870) no Hoare annotation was computed. [2018-11-18 14:35:57,960 INFO L425 ceAbstractionStarter]: For program point L460(lines 460 870) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L196(line 196) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L130(line 130) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L64(line 64) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L329(lines 329 870) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L396(lines 396 870) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L264(lines 264 870) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L198-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L132-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L66-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L859(lines 859 870) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L199(line 199) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L133(line 133) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L67(line 67) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L662(lines 662 870) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L530(lines 530 870) no Hoare annotation was computed. [2018-11-18 14:35:57,961 INFO L425 ceAbstractionStarter]: For program point L795(lines 795 870) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L597(lines 597 870) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L201-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L135-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L69-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L730(lines 730 870) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L202(line 202) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L136(line 136) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L467(lines 467 870) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L335(lines 335 870) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L269(lines 269 870) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L402(lines 402 870) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L138-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L72-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L865(lines 865 870) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L139(line 139) no Hoare annotation was computed. [2018-11-18 14:35:57,962 INFO L425 ceAbstractionStarter]: For program point L73(line 73) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L668(lines 668 870) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L536(lines 536 870) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L801(lines 801 870) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L735(lines 735 870) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L603(lines 603 870) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L141-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L75-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L472(lines 472 870) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L142(line 142) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L76(line 76) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L341(lines 341 870) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L275(lines 275 870) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L408(lines 408 870) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L144-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L78-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L541(lines 541 870) no Hoare annotation was computed. [2018-11-18 14:35:57,963 INFO L425 ceAbstractionStarter]: For program point L211(lines 211 870) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L145(line 145) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L79(line 79) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L674(lines 674 870) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L807(lines 807 870) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L741(lines 741 870) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L609(lines 609 870) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L147-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L81-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L478(lines 478 870) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L280(lines 280 870) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L148(line 148) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L82(line 82) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L677(lines 677 870) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L347(lines 347 870) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L414(lines 414 870) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L150-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,964 INFO L425 ceAbstractionStarter]: For program point L84-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point calculate_outputFINAL(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L547(lines 547 870) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L217(lines 217 870) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L151(line 151) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L85(line 85) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L747(lines 747 870) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L615(lines 615 870) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L153-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L87-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 23) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L21-2(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L814(lines 814 870) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L484(lines 484 870) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L286(lines 286 870) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L154(line 154) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L88(line 88) no Hoare annotation was computed. [2018-11-18 14:35:57,965 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L683(lines 683 870) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L353(lines 353 870) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L552(lines 552 870) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L420(lines 420 870) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L156-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L90-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L24-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L223(lines 223 870) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L157(line 157) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L91(line 91) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L752(lines 752 870) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L819(lines 819 870) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L621(lines 621 870) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L555(lines 555 870) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L159-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,966 INFO L425 ceAbstractionStarter]: For program point L93-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L27-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L688(lines 688 870) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L490(lines 490 870) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L160(line 160) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L94(line 94) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L359(lines 359 870) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L293(lines 293 870) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L426(lines 426 870) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L162-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L96-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L30-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L229(lines 229 870) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L163(line 163) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L97(line 97) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L31(line 31) no Hoare annotation was computed. [2018-11-18 14:35:57,967 INFO L425 ceAbstractionStarter]: For program point L758(lines 758 870) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L626(lines 626 870) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L825(lines 825 870) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L561(lines 561 870) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L495(lines 495 870) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L165-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L99-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L33-1(lines 20 872) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L694(lines 694 870) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L166(line 166) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L100(line 100) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point L299(lines 299 870) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 14:35:57,968 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (= 8 ~a15~0) (= (+ ~a12~0 49) 0) (= ~a24~0 1) (= ~a21~0 7)) [2018-11-18 14:35:57,968 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 14:35:57,968 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 14:35:57,969 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 874 890) the Hoare annotation is: (or (not (= 8 |old(~a15~0)|)) (not (= 7 |old(~a21~0)|)) (not (= 1 |old(~a24~0)|)) (and (= (+ ~a12~0 49) 0) (= 7 ~a21~0) (= |old(~a15~0)| ~a15~0) (= ~a24~0 1)) (not (= 0 (+ |old(~a12~0)| 49)))) [2018-11-18 14:35:57,969 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 874 890) no Hoare annotation was computed. [2018-11-18 14:35:57,969 INFO L421 ceAbstractionStarter]: At program point L888(line 888) the Hoare annotation is: (let ((.cse5 (= 1 ~a24~0)) (.cse11 (= ~a21~0 8)) (.cse4 (not (= main_~input~0 0))) (.cse10 (= ~a15~0 8)) (.cse12 (= ~a24~0 1))) (let ((.cse8 (= 10 ~a21~0)) (.cse2 (= ~a21~0 9)) (.cse0 (<= ~a15~0 7)) (.cse7 (and (not (= ~a21~0 0)) .cse4 .cse10 .cse12)) (.cse3 (<= ~a12~0 80)) (.cse1 (= ~a24~0 |old(~a24~0)|)) (.cse13 (<= 10 ~a21~0)) (.cse17 (<= ~a12~0 11)) (.cse9 (and .cse5 .cse11)) (.cse15 (= 7 ~a21~0)) (.cse14 (= 9 ~a15~0)) (.cse6 (= 6 ~a21~0)) (.cse16 (= 5 ~a15~0))) (or (and .cse0 .cse1 .cse2) (and (and .cse3 .cse4) .cse2 .cse5 (<= ~a15~0 |old(~a15~0)|)) (and .cse6 (and .cse0 .cse1)) (not (= 7 |old(~a21~0)|)) (and .cse7 .cse8) (and .cse0 .cse9) (and (<= ~a12~0 73282) (and .cse4 .cse10 .cse11 .cse12)) (and .cse5 (and .cse13 (< 80 ~a12~0)) .cse14) (and .cse15 .cse16) (not (= 1 |old(~a24~0)|)) (and (= 7 ~a15~0) .cse5 .cse8) (and .cse2 .cse5 .cse14) (not (= 8 |old(~a15~0)|)) (and .cse0 (and .cse3 (<= ~a21~0 7) .cse5)) (and (<= ~a12~0 95434) .cse1 (and .cse6 .cse14) (< 95380 ~a12~0)) (and .cse7 .cse6) (and (and .cse13 .cse16) .cse1) (not (= 0 (+ |old(~a12~0)| 49))) (and (and .cse3 .cse4 .cse15 (= 8 ~a15~0)) .cse1) (and (and .cse5 .cse13 .cse17) .cse14) (= 6 ~a15~0) (and (and .cse5 .cse11 .cse17) .cse14) (and .cse9 (< 18 ~a12~0) (<= ~a12~0 72) (= ~a15~0 9)) (and .cse5 (and (let ((.cse18 (<= 81 ~a12~0))) (or (and .cse18 .cse11) (and .cse18 .cse15))) .cse14)) (and .cse6 .cse16 (<= (+ ~a12~0 49) 0))))) [2018-11-18 14:35:57,969 INFO L425 ceAbstractionStarter]: For program point L888-1(line 888) no Hoare annotation was computed. [2018-11-18 14:35:57,969 INFO L425 ceAbstractionStarter]: For program point L885(line 885) no Hoare annotation was computed. [2018-11-18 14:35:57,969 INFO L425 ceAbstractionStarter]: For program point L880-1(lines 880 889) no Hoare annotation was computed. [2018-11-18 14:35:57,970 INFO L421 ceAbstractionStarter]: At program point L880-3(lines 880 889) the Hoare annotation is: (let ((.cse11 (= 1 ~a24~0)) (.cse6 (= ~a21~0 8))) (let ((.cse1 (= 10 ~a21~0)) (.cse9 (<= ~a15~0 7)) (.cse5 (= ~a15~0 |old(~a15~0)|)) (.cse4 (= ~a24~0 |old(~a24~0)|)) (.cse2 (<= ~a12~0 80)) (.cse0 (= ~a24~0 1)) (.cse15 (= ~a21~0 9)) (.cse7 (<= ~a15~0 |old(~a15~0)|)) (.cse12 (<= 10 ~a21~0)) (.cse16 (<= ~a12~0 11)) (.cse10 (and .cse11 .cse6)) (.cse3 (= 7 ~a21~0)) (.cse13 (= 9 ~a15~0)) (.cse8 (= 6 ~a21~0)) (.cse14 (= 5 ~a15~0))) (or (and (and (= ~a15~0 8) .cse0) .cse1) (and (and .cse2 .cse3) .cse4 .cse5) (and (<= ~a12~0 73282) (and .cse0 .cse6) .cse7) (and .cse8 (and .cse9 .cse4)) (not (= 7 |old(~a21~0)|)) (and .cse9 .cse10) (and .cse11 (and .cse12 (< 80 ~a12~0)) .cse13) (and .cse3 .cse14) (not (= 1 |old(~a24~0)|)) (and (= 7 ~a15~0) .cse11 .cse1) (and .cse15 .cse11 .cse13) (not (= 8 |old(~a15~0)|)) (and (and .cse11 .cse15) .cse9) (and .cse9 (and .cse2 (<= ~a21~0 7) .cse11)) (and (<= ~a12~0 95434) .cse4 (and .cse8 .cse13) (< 95380 ~a12~0)) (and .cse8 (and .cse4 .cse5)) (and (and .cse12 .cse14) .cse4) (and (and .cse2 .cse0) .cse15 .cse7) (not (= 0 (+ |old(~a12~0)| 49))) (and (and .cse11 .cse12 .cse16) .cse13) (= 6 ~a15~0) (and (and .cse11 .cse6 .cse16) .cse13) (and .cse10 (< 18 ~a12~0) (<= ~a12~0 72) (= ~a15~0 9)) (and .cse11 (and (let ((.cse17 (<= 81 ~a12~0))) (or (and .cse17 .cse6) (and .cse17 .cse3))) .cse13)) (and .cse8 .cse14 (<= (+ ~a12~0 49) 0))))) [2018-11-18 14:35:57,970 INFO L425 ceAbstractionStarter]: For program point L880-4(lines 874 890) no Hoare annotation was computed. [2018-11-18 14:35:57,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:35:57 BoogieIcfgContainer [2018-11-18 14:35:57,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:35:57,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:35:57,983 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:35:57,983 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:35:57,983 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:30:52" (3/4) ... [2018-11-18 14:35:57,986 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 14:35:57,991 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 14:35:57,991 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure calculate_output [2018-11-18 14:35:57,992 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 14:35:58,015 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 14:35:58,016 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 14:35:58,054 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((a15 == 8 && a24 == 1) && 10 == a21) || (((a12 <= 80 && 7 == a21) && a24 == \old(a24)) && a15 == \old(a15))) || ((a12 <= 73282 && a24 == 1 && a21 == 8) && a15 <= \old(a15))) || (6 == a21 && a15 <= 7 && a24 == \old(a24))) || !(7 == \old(a21))) || (a15 <= 7 && 1 == a24 && a21 == 8)) || ((1 == a24 && 10 <= a21 && 80 < a12) && 9 == a15)) || (7 == a21 && 5 == a15)) || !(1 == \old(a24))) || ((7 == a15 && 1 == a24) && 10 == a21)) || ((a21 == 9 && 1 == a24) && 9 == a15)) || !(8 == \old(a15))) || ((1 == a24 && a21 == 9) && a15 <= 7)) || (a15 <= 7 && (a12 <= 80 && a21 <= 7) && 1 == a24)) || (((a12 <= 95434 && a24 == \old(a24)) && 6 == a21 && 9 == a15) && 95380 < a12)) || (6 == a21 && a24 == \old(a24) && a15 == \old(a15))) || ((10 <= a21 && 5 == a15) && a24 == \old(a24))) || (((a12 <= 80 && a24 == 1) && a21 == 9) && a15 <= \old(a15))) || !(0 == \old(a12) + 49)) || (((1 == a24 && 10 <= a21) && a12 <= 11) && 9 == a15)) || 6 == a15) || (((1 == a24 && a21 == 8) && a12 <= 11) && 9 == a15)) || ((((1 == a24 && a21 == 8) && 18 < a12) && a12 <= 72) && a15 == 9)) || (1 == a24 && ((81 <= a12 && a21 == 8) || (81 <= a12 && 7 == a21)) && 9 == a15)) || ((6 == a21 && 5 == a15) && a12 + 49 <= 0) [2018-11-18 14:35:58,144 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2de6ae3d-065d-45d6-9152-22be88689dfc/bin-2019/utaipan/witness.graphml [2018-11-18 14:35:58,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:35:58,145 INFO L168 Benchmark]: Toolchain (without parser) took 307479.42 ms. Allocated memory was 1.0 GB in the beginning and 5.0 GB in the end (delta: 4.0 GB). Free memory was 956.5 MB in the beginning and 2.6 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.3 GB. Max. memory is 11.5 GB. [2018-11-18 14:35:58,146 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:35:58,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.72 ms. Allocated memory is still 1.0 GB. Free memory was 956.5 MB in the beginning and 913.5 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2018-11-18 14:35:58,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 913.5 MB in the beginning and 1.1 GB in the end (delta: -209.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-18 14:35:58,146 INFO L168 Benchmark]: Boogie Preprocessor took 59.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 14:35:58,147 INFO L168 Benchmark]: RCFGBuilder took 922.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 997.4 MB in the end (delta: 122.5 MB). Peak memory consumption was 122.5 MB. Max. memory is 11.5 GB. [2018-11-18 14:35:58,147 INFO L168 Benchmark]: TraceAbstraction took 305830.53 ms. Allocated memory was 1.2 GB in the beginning and 5.0 GB in the end (delta: 3.9 GB). Free memory was 997.4 MB in the beginning and 2.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 4.4 GB. Max. memory is 11.5 GB. [2018-11-18 14:35:58,147 INFO L168 Benchmark]: Witness Printer took 162.03 ms. Allocated memory is still 5.0 GB. Free memory was 2.6 GB in the beginning and 2.6 GB in the end (delta: 2.1 kB). Peak memory consumption was 2.1 kB. Max. memory is 11.5 GB. [2018-11-18 14:35:58,149 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 410.72 ms. Allocated memory is still 1.0 GB. Free memory was 956.5 MB in the beginning and 913.5 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 90.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 913.5 MB in the beginning and 1.1 GB in the end (delta: -209.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 59.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 922.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 997.4 MB in the end (delta: 122.5 MB). Peak memory consumption was 122.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 305830.53 ms. Allocated memory was 1.2 GB in the beginning and 5.0 GB in the end (delta: 3.9 GB). Free memory was 997.4 MB in the beginning and 2.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 4.4 GB. Max. memory is 11.5 GB. * Witness Printer took 162.03 ms. Allocated memory is still 5.0 GB. Free memory was 2.6 GB in the beginning and 2.6 GB in the end (delta: 2.1 kB). Peak memory consumption was 2.1 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 175]: 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: 880]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((a15 == 8 && a24 == 1) && 10 == a21) || (((a12 <= 80 && 7 == a21) && a24 == \old(a24)) && a15 == \old(a15))) || ((a12 <= 73282 && a24 == 1 && a21 == 8) && a15 <= \old(a15))) || (6 == a21 && a15 <= 7 && a24 == \old(a24))) || !(7 == \old(a21))) || (a15 <= 7 && 1 == a24 && a21 == 8)) || ((1 == a24 && 10 <= a21 && 80 < a12) && 9 == a15)) || (7 == a21 && 5 == a15)) || !(1 == \old(a24))) || ((7 == a15 && 1 == a24) && 10 == a21)) || ((a21 == 9 && 1 == a24) && 9 == a15)) || !(8 == \old(a15))) || ((1 == a24 && a21 == 9) && a15 <= 7)) || (a15 <= 7 && (a12 <= 80 && a21 <= 7) && 1 == a24)) || (((a12 <= 95434 && a24 == \old(a24)) && 6 == a21 && 9 == a15) && 95380 < a12)) || (6 == a21 && a24 == \old(a24) && a15 == \old(a15))) || ((10 <= a21 && 5 == a15) && a24 == \old(a24))) || (((a12 <= 80 && a24 == 1) && a21 == 9) && a15 <= \old(a15))) || !(0 == \old(a12) + 49)) || (((1 == a24 && 10 <= a21) && a12 <= 11) && 9 == a15)) || 6 == a15) || (((1 == a24 && a21 == 8) && a12 <= 11) && 9 == a15)) || ((((1 == a24 && a21 == 8) && 18 < a12) && a12 <= 72) && a15 == 9)) || (1 == a24 && ((81 <= a12 && a21 == 8) || (81 <= a12 && 7 == a21)) && 9 == a15)) || ((6 == a21 && 5 == a15) && a12 + 49 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. SAFE Result, 305.7s OverallTime, 22 OverallIterations, 17 TraceHistogramMax, 138.1s AutomataDifference, 0.0s DeadEndRemovalTime, 16.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 3028 SDtfs, 78969 SDslu, 6869 SDs, 0 SdLazy, 88416 SolverSat, 10660 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 98.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 32000 GetRequests, 31095 SyntacticMatches, 43 SemanticMatches, 862 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21318 ImplicationChecksByTransitivity, 29.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21072occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 91.8s AbstIntTime, 19 AbstIntIterations, 4 AbstIntStrong, 0.9974065296761628 AbsIntWeakeningRatio, 0.08751793400286945 AbsIntAvgWeakeningVarsNumRemoved, 16.121233859397417 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 22 MinimizatonAttempts, 7375 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 1930 PreInvPairs, 2390 NumberOfFragments, 1263 HoareAnnotationTreeSize, 1930 FomulaSimplifications, 317591 FormulaSimplificationTreeSizeReduction, 5.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 299951 FormulaSimplificationTreeSizeReductionInter, 11.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 30.4s InterpolantComputationTime, 32217 NumberOfCodeBlocks, 32217 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 46900 ConstructedInterpolants, 2 QuantifiedInterpolants, 228688073 SizeOfPredicates, 40 NumberOfNonLiveVariables, 20558 ConjunctsInSsa, 137 ConjunctsInUnsatCore, 52 InterpolantComputations, 7 PerfectInterpolantSequences, 140631/165602 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...