java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:56:19,537 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:56:19,539 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:56:19,554 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:56:19,559 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:56:19,560 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:56:19,564 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:56:19,571 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:56:19,573 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:56:19,574 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:56:19,581 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:56:19,582 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:56:19,583 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:56:19,584 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:56:19,585 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:56:19,586 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:56:19,586 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:56:19,588 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:56:19,590 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:56:19,591 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:56:19,592 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:56:19,594 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:56:19,596 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:56:19,596 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:56:19,596 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:56:19,597 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:56:19,598 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:56:19,599 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:56:19,600 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:56:19,601 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:56:19,601 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:56:19,602 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:56:19,602 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:56:19,602 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:56:19,603 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:56:19,604 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:56:19,604 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:56:19,625 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:56:19,625 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:56:19,627 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:56:19,627 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:56:19,627 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:56:19,627 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:56:19,627 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:56:19,628 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:56:19,628 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:56:19,628 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:56:19,628 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:56:19,628 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:56:19,629 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:56:19,630 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:56:19,630 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:56:19,630 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:56:19,630 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:56:19,630 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:56:19,631 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:56:19,632 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:56:19,632 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:56:19,632 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:56:19,632 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:56:19,632 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:56:19,633 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:56:19,633 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:56:19,633 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:56:19,633 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:56:19,634 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:56:19,634 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:56:19,634 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:56:19,634 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:56:19,634 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:56:19,635 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:56:19,635 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:56:19,679 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:56:19,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:56:19,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:56:19,703 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:56:19,703 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:56:19,704 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c [2018-11-07 18:56:19,764 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b6214d4e/eededf508c714ae89129cb4af9823450/FLAGc1b99b007 [2018-11-07 18:56:20,455 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:56:20,456 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label41_true-unreach-call.c [2018-11-07 18:56:20,479 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b6214d4e/eededf508c714ae89129cb4af9823450/FLAGc1b99b007 [2018-11-07 18:56:20,501 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b6214d4e/eededf508c714ae89129cb4af9823450 [2018-11-07 18:56:20,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:56:20,515 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:56:20,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:20,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:56:20,519 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:56:20,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:20" (1/1) ... [2018-11-07 18:56:20,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42cad3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:20, skipping insertion in model container [2018-11-07 18:56:20,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:20" (1/1) ... [2018-11-07 18:56:20,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:56:20,643 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:56:21,429 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:21,435 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:56:21,758 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:21,784 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:56:21,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21 WrapperNode [2018-11-07 18:56:21,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:21,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:21,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:56:21,786 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:56:21,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:21,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:22,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:22,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:56:22,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:56:22,014 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:56:22,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:22,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:22,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:22,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:22,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:22,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:22,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... [2018-11-07 18:56:22,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:56:22,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:56:22,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:56:22,132 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:56:22,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-07 18:56:22,221 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:56:22,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:56:22,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:56:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:56:22,222 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:56:22,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:56:22,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:56:22,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:56:22,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:56:27,165 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:56:27,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:27 BoogieIcfgContainer [2018-11-07 18:56:27,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:56:27,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:56:27,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:56:27,171 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:56:27,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:56:20" (1/3) ... [2018-11-07 18:56:27,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394ed6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:27, skipping insertion in model container [2018-11-07 18:56:27,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:21" (2/3) ... [2018-11-07 18:56:27,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394ed6fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:27, skipping insertion in model container [2018-11-07 18:56:27,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:27" (3/3) ... [2018-11-07 18:56:27,175 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label41_true-unreach-call.c [2018-11-07 18:56:27,185 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:56:27,196 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:56:27,210 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:56:27,249 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:56:27,250 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:56:27,250 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:56:27,250 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:56:27,250 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:56:27,250 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:56:27,251 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:56:27,251 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:56:27,284 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 18:56:27,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 18:56:27,305 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:27,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:27,309 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:27,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1737651188, now seen corresponding path program 1 times [2018-11-07 18:56:27,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:27,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:27,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:27,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:27,372 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:28,340 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 18:56:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:28,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:28,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:56:28,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:28,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:56:28,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:56:28,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:56:28,627 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 18:56:32,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:32,175 INFO L93 Difference]: Finished difference Result 1074 states and 1924 transitions. [2018-11-07 18:56:32,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:56:32,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2018-11-07 18:56:32,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:32,207 INFO L225 Difference]: With dead ends: 1074 [2018-11-07 18:56:32,207 INFO L226 Difference]: Without dead ends: 756 [2018-11-07 18:56:32,216 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:56:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2018-11-07 18:56:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 520. [2018-11-07 18:56:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-11-07 18:56:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 919 transitions. [2018-11-07 18:56:32,315 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 919 transitions. Word has length 189 [2018-11-07 18:56:32,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:32,318 INFO L480 AbstractCegarLoop]: Abstraction has 520 states and 919 transitions. [2018-11-07 18:56:32,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:56:32,319 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 919 transitions. [2018-11-07 18:56:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-11-07 18:56:32,335 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:32,339 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:32,339 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:32,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:32,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1467958639, now seen corresponding path program 1 times [2018-11-07 18:56:32,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:32,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:32,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:32,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:32,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:32,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:32,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:56:32,855 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:32,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:56:32,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:56:32,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:56:32,858 INFO L87 Difference]: Start difference. First operand 520 states and 919 transitions. Second operand 6 states. [2018-11-07 18:56:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:36,278 INFO L93 Difference]: Finished difference Result 1482 states and 2700 transitions. [2018-11-07 18:56:36,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:56:36,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-11-07 18:56:36,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:36,289 INFO L225 Difference]: With dead ends: 1482 [2018-11-07 18:56:36,290 INFO L226 Difference]: Without dead ends: 968 [2018-11-07 18:56:36,293 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:56:36,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-11-07 18:56:36,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 949. [2018-11-07 18:56:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2018-11-07 18:56:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1579 transitions. [2018-11-07 18:56:36,374 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1579 transitions. Word has length 217 [2018-11-07 18:56:36,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:36,375 INFO L480 AbstractCegarLoop]: Abstraction has 949 states and 1579 transitions. [2018-11-07 18:56:36,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:56:36,375 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1579 transitions. [2018-11-07 18:56:36,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-11-07 18:56:36,381 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:36,381 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:36,381 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:36,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:36,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1187874820, now seen corresponding path program 1 times [2018-11-07 18:56:36,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:36,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:36,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:36,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:36,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:36,730 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:36,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:56:36,730 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:36,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:56:36,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:56:36,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:56:36,733 INFO L87 Difference]: Start difference. First operand 949 states and 1579 transitions. Second operand 3 states. [2018-11-07 18:56:39,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:39,206 INFO L93 Difference]: Finished difference Result 2535 states and 4260 transitions. [2018-11-07 18:56:39,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:56:39,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-11-07 18:56:39,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:39,226 INFO L225 Difference]: With dead ends: 2535 [2018-11-07 18:56:39,226 INFO L226 Difference]: Without dead ends: 1592 [2018-11-07 18:56:39,232 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:56:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2018-11-07 18:56:39,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1590. [2018-11-07 18:56:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1590 states. [2018-11-07 18:56:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 2503 transitions. [2018-11-07 18:56:39,321 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 2503 transitions. Word has length 235 [2018-11-07 18:56:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:39,322 INFO L480 AbstractCegarLoop]: Abstraction has 1590 states and 2503 transitions. [2018-11-07 18:56:39,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:56:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 2503 transitions. [2018-11-07 18:56:39,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-11-07 18:56:39,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:39,334 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:56:39,334 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:39,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:39,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1850495347, now seen corresponding path program 1 times [2018-11-07 18:56:39,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:39,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:39,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:39,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:39,337 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:39,661 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:56:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:56:40,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:56:40,096 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:56:40,097 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-11-07 18:56:40,105 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:56:40,172 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:56:40,173 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:56:41,839 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:56:41,842 INFO L272 AbstractInterpreter]: Visited 190 different actions 190 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 18:56:41,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:41,894 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:56:43,480 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 72.99% of their original sizes. [2018-11-07 18:56:43,480 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:56:45,591 INFO L415 sIntCurrentIteration]: We unified 250 AI predicates to 250 [2018-11-07 18:56:45,591 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:56:45,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:56:45,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-07 18:56:45,593 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:45,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 18:56:45,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 18:56:45,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:56:45,595 INFO L87 Difference]: Start difference. First operand 1590 states and 2503 transitions. Second operand 17 states. [2018-11-07 18:57:22,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:57:22,750 INFO L93 Difference]: Finished difference Result 3384 states and 5321 transitions. [2018-11-07 18:57:22,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:57:22,750 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 251 [2018-11-07 18:57:22,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:57:22,761 INFO L225 Difference]: With dead ends: 3384 [2018-11-07 18:57:22,761 INFO L226 Difference]: Without dead ends: 1800 [2018-11-07 18:57:22,767 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 253 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2018-11-07 18:57:22,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2018-11-07 18:57:22,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1798. [2018-11-07 18:57:22,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1798 states. [2018-11-07 18:57:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2720 transitions. [2018-11-07 18:57:22,819 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2720 transitions. Word has length 251 [2018-11-07 18:57:22,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:57:22,819 INFO L480 AbstractCegarLoop]: Abstraction has 1798 states and 2720 transitions. [2018-11-07 18:57:22,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 18:57:22,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2720 transitions. [2018-11-07 18:57:22,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-07 18:57:22,829 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:57:22,829 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:57:22,830 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:57:22,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:22,830 INFO L82 PathProgramCache]: Analyzing trace with hash 519379344, now seen corresponding path program 1 times [2018-11-07 18:57:22,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:57:22,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:22,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:57:22,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:22,832 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:57:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:57:23,090 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:57:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 69 proven. 27 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-07 18:57:23,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:57:23,138 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:57:23,139 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-11-07 18:57:23,139 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:57:23,148 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:57:23,149 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:57:24,452 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:57:24,452 INFO L272 AbstractInterpreter]: Visited 194 different actions 382 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:57:24,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:24,459 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:57:26,332 INFO L227 lantSequenceWeakener]: Weakened 93 states. On average, predicates are now at 78.98% of their original sizes. [2018-11-07 18:57:26,332 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:57:27,519 INFO L415 sIntCurrentIteration]: We unified 262 AI predicates to 262 [2018-11-07 18:57:27,520 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:57:27,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:57:27,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-11-07 18:57:27,520 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:57:27,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 18:57:27,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 18:57:27,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2018-11-07 18:57:27,522 INFO L87 Difference]: Start difference. First operand 1798 states and 2720 transitions. Second operand 24 states. [2018-11-07 18:58:48,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:58:48,260 INFO L93 Difference]: Finished difference Result 4013 states and 6084 transitions. [2018-11-07 18:58:48,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 18:58:48,260 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 263 [2018-11-07 18:58:48,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:58:48,276 INFO L225 Difference]: With dead ends: 4013 [2018-11-07 18:58:48,276 INFO L226 Difference]: Without dead ends: 2429 [2018-11-07 18:58:48,282 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 271 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=236, Invalid=820, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 18:58:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2018-11-07 18:58:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2426. [2018-11-07 18:58:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2426 states. [2018-11-07 18:58:48,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 3396 transitions. [2018-11-07 18:58:48,351 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 3396 transitions. Word has length 263 [2018-11-07 18:58:48,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:58:48,352 INFO L480 AbstractCegarLoop]: Abstraction has 2426 states and 3396 transitions. [2018-11-07 18:58:48,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-07 18:58:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 3396 transitions. [2018-11-07 18:58:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-11-07 18:58:48,362 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:58:48,363 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:58:48,363 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:58:48,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:48,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1300281084, now seen corresponding path program 1 times [2018-11-07 18:58:48,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:58:48,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:48,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:48,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:48,365 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:58:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 98 proven. 22 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-07 18:58:48,645 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:48,645 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:58:48,645 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 274 with the following transitions: [2018-11-07 18:58:48,646 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:58:48,653 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:58:48,653 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:58:50,532 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:58:50,533 INFO L272 AbstractInterpreter]: Visited 194 different actions 384 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:58:50,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:50,542 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:58:51,889 INFO L227 lantSequenceWeakener]: Weakened 268 states. On average, predicates are now at 72.69% of their original sizes. [2018-11-07 18:58:51,890 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:58:52,634 INFO L415 sIntCurrentIteration]: We unified 272 AI predicates to 272 [2018-11-07 18:58:52,635 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:58:52,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:58:52,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 18:58:52,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:58:52,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 18:58:52,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 18:58:52,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 18:58:52,636 INFO L87 Difference]: Start difference. First operand 2426 states and 3396 transitions. Second operand 19 states. [2018-11-07 18:59:56,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:59:56,150 INFO L93 Difference]: Finished difference Result 5300 states and 7745 transitions. [2018-11-07 18:59:56,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:59:56,151 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 273 [2018-11-07 18:59:56,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:59:56,167 INFO L225 Difference]: With dead ends: 5300 [2018-11-07 18:59:56,168 INFO L226 Difference]: Without dead ends: 3716 [2018-11-07 18:59:56,176 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 281 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2018-11-07 18:59:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3716 states. [2018-11-07 18:59:56,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3716 to 3714. [2018-11-07 18:59:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3714 states. [2018-11-07 18:59:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 4892 transitions. [2018-11-07 18:59:56,269 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 4892 transitions. Word has length 273 [2018-11-07 18:59:56,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:59:56,270 INFO L480 AbstractCegarLoop]: Abstraction has 3714 states and 4892 transitions. [2018-11-07 18:59:56,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 18:59:56,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 4892 transitions. [2018-11-07 18:59:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-11-07 18:59:56,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:59:56,285 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:59:56,286 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:59:56,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:59:56,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1107433359, now seen corresponding path program 1 times [2018-11-07 18:59:56,286 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:59:56,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:56,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:59:56,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:59:56,288 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:59:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:59:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 112 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:59:56,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:59:56,830 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:59:56,830 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 302 with the following transitions: [2018-11-07 18:59:56,830 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [973], [975], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:59:56,835 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:59:56,836 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 19:00:16,671 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 19:00:16,671 INFO L272 AbstractInterpreter]: Visited 196 different actions 4089 times. Merged at 8 different actions 195 times. Widened at 1 different actions 17 times. Found 41 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 19:00:16,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 19:00:16,682 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 19:00:16,682 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 19:00:16,682 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-07 19:00:16,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 19:00:16,694 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 19:00:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 19:00:16,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 19:00:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-07 19:00:17,300 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 19:00:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-07 19:00:17,964 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 19:00:17,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [13] total 14 [2018-11-07 19:00:17,965 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 19:00:17,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 19:00:17,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 19:00:17,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-11-07 19:00:17,966 INFO L87 Difference]: Start difference. First operand 3714 states and 4892 transitions. Second operand 3 states. [2018-11-07 19:00:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 19:00:20,104 INFO L93 Difference]: Finished difference Result 8531 states and 12115 transitions. [2018-11-07 19:00:20,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 19:00:20,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 301 [2018-11-07 19:00:20,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 19:00:20,133 INFO L225 Difference]: With dead ends: 8531 [2018-11-07 19:00:20,133 INFO L226 Difference]: Without dead ends: 6078 [2018-11-07 19:00:20,146 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 601 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 Received shutdown request... [2018-11-07 19:00:20,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6078 states. [2018-11-07 19:00:20,155 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 19:00:20,160 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 19:00:20,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:00:20 BoogieIcfgContainer [2018-11-07 19:00:20,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 19:00:20,161 INFO L168 Benchmark]: Toolchain (without parser) took 239647.35 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 622.5 MB in the end (delta: 801.9 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:20,166 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 19:00:20,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1269.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:20,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:20,171 INFO L168 Benchmark]: Boogie Preprocessor took 117.35 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 19:00:20,171 INFO L168 Benchmark]: RCFGBuilder took 5034.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 254.4 MB). Peak memory consumption was 254.4 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:20,173 INFO L168 Benchmark]: TraceAbstraction took 232993.18 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 622.5 MB in the end (delta: 1.3 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:20,179 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1269.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.4 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.35 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5034.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 254.4 MB). Peak memory consumption was 254.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232993.18 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 622.5 MB in the end (delta: 1.3 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1581]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1581). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 232.9s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 193.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2125 SDtfs, 6726 SDslu, 2992 SDs, 0 SdLazy, 14723 SolverSat, 1594 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1441 GetRequests, 1338 SyntacticMatches, 6 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3714occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 24.8s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9990493265985511 AbsIntWeakeningRatio, 0.28188775510204084 AbsIntAvgWeakeningVarsNumRemoved, 54.598214285714285 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 264 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 2030 NumberOfCodeBlocks, 2030 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2322 ConstructedInterpolants, 0 QuantifiedInterpolants, 1479402 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1426 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 861/1019 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown