java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:20:57,537 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:20:57,539 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:20:57,551 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:20:57,552 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:20:57,553 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:20:57,554 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:20:57,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:20:57,557 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:20:57,558 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:20:57,559 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:20:57,559 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:20:57,561 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:20:57,562 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:20:57,563 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:20:57,564 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:20:57,564 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:20:57,566 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:20:57,568 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:20:57,570 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:20:57,571 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:20:57,572 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:20:57,578 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:20:57,591 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:20:57,591 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:20:57,592 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:20:57,593 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:20:57,593 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:20:57,609 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:20:57,609 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:20:57,610 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:20:57,610 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:20:57,610 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:20:57,611 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:20:57,611 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:20:57,611 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:20:57,611 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:20:57,611 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:20:57,612 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:20:57,612 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:20:57,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:20:57,613 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:20:57,613 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:20:57,613 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:20:57,613 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:20:57,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:20:57,614 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:20:57,614 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:20:57,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:20:57,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:20:57,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:20:57,615 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:20:57,615 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:20:57,615 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:20:57,615 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:20:57,615 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:20:57,615 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:20:57,616 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:20:57,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:20:57,616 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:20:57,616 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:20:57,616 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:20:57,690 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:20:57,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:20:57,708 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:20:57,709 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:20:57,710 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:20:57,711 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label08_false-unreach-call.c [2018-10-27 00:20:57,768 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a430f471/878fd60859854c0ca79b4b100612412f/FLAG11540cfd4 [2018-10-27 00:20:58,477 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:20:58,478 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label08_false-unreach-call.c [2018-10-27 00:20:58,502 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a430f471/878fd60859854c0ca79b4b100612412f/FLAG11540cfd4 [2018-10-27 00:20:58,519 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0a430f471/878fd60859854c0ca79b4b100612412f [2018-10-27 00:20:58,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:20:58,532 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:20:58,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:20:58,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:20:58,538 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:20:58,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:20:58" (1/1) ... [2018-10-27 00:20:58,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0d0dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:20:58, skipping insertion in model container [2018-10-27 00:20:58,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:20:58" (1/1) ... [2018-10-27 00:20:58,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:20:58,670 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:20:59,732 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:20:59,736 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:21:00,219 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:21:00,249 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:21:00,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00 WrapperNode [2018-10-27 00:21:00,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:21:00,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:21:00,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:21:00,252 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:21:00,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (1/1) ... [2018-10-27 00:21:00,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (1/1) ... [2018-10-27 00:21:00,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:21:00,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:21:00,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:21:00,702 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:21:00,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (1/1) ... [2018-10-27 00:21:00,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (1/1) ... [2018-10-27 00:21:00,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (1/1) ... [2018-10-27 00:21:00,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (1/1) ... [2018-10-27 00:21:00,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (1/1) ... [2018-10-27 00:21:00,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (1/1) ... [2018-10-27 00:21:00,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (1/1) ... [2018-10-27 00:21:00,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:21:00,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:21:00,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:21:00,960 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:21:00,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 00:21:01,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:21:01,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:21:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 00:21:01,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 00:21:01,034 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:21:01,034 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:21:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:21:01,035 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:21:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:21:01,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:21:01,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:21:01,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:21:09,765 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:21:09,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:21:09 BoogieIcfgContainer [2018-10-27 00:21:09,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:21:09,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:21:09,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:21:09,774 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:21:09,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:20:58" (1/3) ... [2018-10-27 00:21:09,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b26e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:21:09, skipping insertion in model container [2018-10-27 00:21:09,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:21:00" (2/3) ... [2018-10-27 00:21:09,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b26e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:21:09, skipping insertion in model container [2018-10-27 00:21:09,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:21:09" (3/3) ... [2018-10-27 00:21:09,777 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label08_false-unreach-call.c [2018-10-27 00:21:09,786 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:21:09,794 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:21:09,812 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:21:09,858 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:21:09,858 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:21:09,859 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:21:09,859 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:21:09,859 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:21:09,859 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:21:09,859 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:21:09,859 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:21:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 00:21:09,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-27 00:21:09,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:21:09,926 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] [2018-10-27 00:21:09,928 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:21:09,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:21:09,937 INFO L82 PathProgramCache]: Analyzing trace with hash 735211228, now seen corresponding path program 1 times [2018-10-27 00:21:09,940 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:21:09,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:09,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:21:09,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:10,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:21:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:21:10,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:21:10,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:21:10,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:21:10,420 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:21:10,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:21:10,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:21:10,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:21:10,448 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-10-27 00:21:20,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:21:20,742 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-10-27 00:21:20,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:21:20,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-27 00:21:20,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:21:20,786 INFO L225 Difference]: With dead ends: 2974 [2018-10-27 00:21:20,787 INFO L226 Difference]: Without dead ends: 2193 [2018-10-27 00:21:20,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:21:20,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-10-27 00:21:20,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-10-27 00:21:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 00:21:20,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-10-27 00:21:20,955 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 28 [2018-10-27 00:21:20,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:21:20,956 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-10-27 00:21:20,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:21:20,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-10-27 00:21:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-27 00:21:20,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:21:20,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:21:20,962 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:21:20,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:21:20,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1723286230, now seen corresponding path program 1 times [2018-10-27 00:21:20,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:21:20,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:20,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:21:20,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:20,965 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:21:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:21:21,356 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:21:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:21:21,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:21:21,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:21:21,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:21:21,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:21:21,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:21:21,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:21:21,491 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-10-27 00:21:32,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:21:32,189 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-10-27 00:21:32,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:21:32,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-10-27 00:21:32,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:21:32,217 INFO L225 Difference]: With dead ends: 4422 [2018-10-27 00:21:32,217 INFO L226 Difference]: Without dead ends: 2954 [2018-10-27 00:21:32,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:21:32,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-10-27 00:21:32,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-10-27 00:21:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-10-27 00:21:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-10-27 00:21:32,328 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 98 [2018-10-27 00:21:32,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:21:32,329 INFO L481 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-10-27 00:21:32,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:21:32,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-10-27 00:21:32,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-27 00:21:32,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:21:32,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:21:32,334 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:21:32,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:21:32,335 INFO L82 PathProgramCache]: Analyzing trace with hash 374879586, now seen corresponding path program 1 times [2018-10-27 00:21:32,335 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:21:32,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:32,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:21:32,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:32,337 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:21:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:21:32,669 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:21:32,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:21:32,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:21:32,670 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:21:32,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:21:32,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:21:32,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:21:32,672 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-10-27 00:21:41,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:21:41,125 INFO L93 Difference]: Finished difference Result 10279 states and 16084 transitions. [2018-10-27 00:21:41,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:21:41,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-27 00:21:41,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:21:41,178 INFO L225 Difference]: With dead ends: 10279 [2018-10-27 00:21:41,178 INFO L226 Difference]: Without dead ends: 7355 [2018-10-27 00:21:41,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:21:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7355 states. [2018-10-27 00:21:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7355 to 7296. [2018-10-27 00:21:41,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7296 states. [2018-10-27 00:21:41,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 10495 transitions. [2018-10-27 00:21:41,413 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 10495 transitions. Word has length 102 [2018-10-27 00:21:41,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:21:41,414 INFO L481 AbstractCegarLoop]: Abstraction has 7296 states and 10495 transitions. [2018-10-27 00:21:41,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:21:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 10495 transitions. [2018-10-27 00:21:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-27 00:21:41,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:21:41,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:21:41,421 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:21:41,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:21:41,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1832820439, now seen corresponding path program 1 times [2018-10-27 00:21:41,426 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:21:41,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:41,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:21:41,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:41,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:21:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:21:41,677 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:21:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:21:41,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:21:41,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:21:41,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:21:41,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:21:41,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:21:41,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:21:41,715 INFO L87 Difference]: Start difference. First operand 7296 states and 10495 transitions. Second operand 6 states. [2018-10-27 00:21:49,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:21:49,424 INFO L93 Difference]: Finished difference Result 18993 states and 28013 transitions. [2018-10-27 00:21:49,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:21:49,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-10-27 00:21:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:21:49,478 INFO L225 Difference]: With dead ends: 18993 [2018-10-27 00:21:49,479 INFO L226 Difference]: Without dead ends: 11703 [2018-10-27 00:21:49,507 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:21:49,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11703 states. [2018-10-27 00:21:49,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11703 to 11639. [2018-10-27 00:21:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11639 states. [2018-10-27 00:21:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11639 states to 11639 states and 16002 transitions. [2018-10-27 00:21:49,778 INFO L78 Accepts]: Start accepts. Automaton has 11639 states and 16002 transitions. Word has length 123 [2018-10-27 00:21:49,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:21:49,778 INFO L481 AbstractCegarLoop]: Abstraction has 11639 states and 16002 transitions. [2018-10-27 00:21:49,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:21:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 11639 states and 16002 transitions. [2018-10-27 00:21:49,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-27 00:21:49,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:21:49,781 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:21:49,781 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:21:49,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:21:49,782 INFO L82 PathProgramCache]: Analyzing trace with hash 407388415, now seen corresponding path program 1 times [2018-10-27 00:21:49,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:21:49,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:49,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:21:49,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:49,783 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:21:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:21:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:21:49,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:21:49,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:21:49,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:21:49,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:21:49,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:21:49,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:21:49,973 INFO L87 Difference]: Start difference. First operand 11639 states and 16002 transitions. Second operand 4 states. [2018-10-27 00:21:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:21:57,491 INFO L93 Difference]: Finished difference Result 27522 states and 38221 transitions. [2018-10-27 00:21:57,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:21:57,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2018-10-27 00:21:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:21:57,568 INFO L225 Difference]: With dead ends: 27522 [2018-10-27 00:21:57,568 INFO L226 Difference]: Without dead ends: 15889 [2018-10-27 00:21:57,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:21:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15889 states. [2018-10-27 00:21:58,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15889 to 15886. [2018-10-27 00:21:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15886 states. [2018-10-27 00:21:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15886 states to 15886 states and 19859 transitions. [2018-10-27 00:21:58,075 INFO L78 Accepts]: Start accepts. Automaton has 15886 states and 19859 transitions. Word has length 135 [2018-10-27 00:21:58,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:21:58,076 INFO L481 AbstractCegarLoop]: Abstraction has 15886 states and 19859 transitions. [2018-10-27 00:21:58,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:21:58,076 INFO L276 IsEmpty]: Start isEmpty. Operand 15886 states and 19859 transitions. [2018-10-27 00:21:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-27 00:21:58,081 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:21:58,082 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, 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] [2018-10-27 00:21:58,082 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:21:58,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:21:58,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1510117645, now seen corresponding path program 1 times [2018-10-27 00:21:58,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:21:58,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:58,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:21:58,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:21:58,084 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:21:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:21:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-27 00:21:58,320 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:21:58,320 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:21:58,320 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:21:58,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:21:58,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:21:58,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:21:58,323 INFO L87 Difference]: Start difference. First operand 15886 states and 19859 transitions. Second operand 4 states. [2018-10-27 00:22:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:22:06,582 INFO L93 Difference]: Finished difference Result 58570 states and 75868 transitions. [2018-10-27 00:22:06,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:22:06,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2018-10-27 00:22:06,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:22:06,736 INFO L225 Difference]: With dead ends: 58570 [2018-10-27 00:22:06,737 INFO L226 Difference]: Without dead ends: 42690 [2018-10-27 00:22:06,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:22:06,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42690 states. [2018-10-27 00:22:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42690 to 40570. [2018-10-27 00:22:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40570 states. [2018-10-27 00:22:07,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40570 states to 40570 states and 50550 transitions. [2018-10-27 00:22:07,874 INFO L78 Accepts]: Start accepts. Automaton has 40570 states and 50550 transitions. Word has length 205 [2018-10-27 00:22:07,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:22:07,875 INFO L481 AbstractCegarLoop]: Abstraction has 40570 states and 50550 transitions. [2018-10-27 00:22:07,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:22:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 40570 states and 50550 transitions. [2018-10-27 00:22:07,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-27 00:22:07,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:22:07,887 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, 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, 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] [2018-10-27 00:22:07,888 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:22:07,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:22:07,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1838878876, now seen corresponding path program 1 times [2018-10-27 00:22:07,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:22:07,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:22:07,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:22:07,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:22:07,893 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:22:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:22:08,192 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-10-27 00:22:08,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:22:08,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:22:08,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:22:08,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:22:08,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:22:08,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:22:08,194 INFO L87 Difference]: Start difference. First operand 40570 states and 50550 transitions. Second operand 4 states. [2018-10-27 00:22:15,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:22:15,590 INFO L93 Difference]: Finished difference Result 91037 states and 114482 transitions. [2018-10-27 00:22:15,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:22:15,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 286 [2018-10-27 00:22:15,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:22:15,766 INFO L225 Difference]: With dead ends: 91037 [2018-10-27 00:22:15,766 INFO L226 Difference]: Without dead ends: 50473 [2018-10-27 00:22:15,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:22:15,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50473 states. [2018-10-27 00:22:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50473 to 49061. [2018-10-27 00:22:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49061 states. [2018-10-27 00:22:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49061 states to 49061 states and 57553 transitions. [2018-10-27 00:22:17,222 INFO L78 Accepts]: Start accepts. Automaton has 49061 states and 57553 transitions. Word has length 286 [2018-10-27 00:22:17,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:22:17,224 INFO L481 AbstractCegarLoop]: Abstraction has 49061 states and 57553 transitions. [2018-10-27 00:22:17,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:22:17,224 INFO L276 IsEmpty]: Start isEmpty. Operand 49061 states and 57553 transitions. [2018-10-27 00:22:17,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-27 00:22:17,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:22:17,258 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:22:17,258 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:22:17,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:22:17,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1221704300, now seen corresponding path program 1 times [2018-10-27 00:22:17,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:22:17,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:22:17,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:22:17,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:22:17,260 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:22:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:22:17,837 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-27 00:22:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 42 proven. 157 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 00:22:18,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:22:18,569 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:22:18,570 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 415 with the following transitions: [2018-10-27 00:22:18,573 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1747], [1749], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2484], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2732], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 00:22:18,684 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:22:18,684 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:22:25,317 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:22:25,436 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:22:25,440 INFO L272 AbstractInterpreter]: Visited 229 different actions 229 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 00:22:25,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:22:25,446 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:22:28,719 INFO L227 lantSequenceWeakener]: Weakened 406 states. On average, predicates are now at 77.43% of their original sizes. [2018-10-27 00:22:28,719 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:22:29,230 INFO L415 sIntCurrentIteration]: We unified 413 AI predicates to 413 [2018-10-27 00:22:29,231 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:22:29,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:22:29,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-10-27 00:22:29,232 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:22:29,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 00:22:29,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 00:22:29,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:22:29,233 INFO L87 Difference]: Start difference. First operand 49061 states and 57553 transitions. Second operand 8 states. [2018-10-27 00:24:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:24:34,390 INFO L93 Difference]: Finished difference Result 98821 states and 115925 transitions. [2018-10-27 00:24:34,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 00:24:34,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 414 [2018-10-27 00:24:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:24:34,504 INFO L225 Difference]: With dead ends: 98821 [2018-10-27 00:24:34,505 INFO L226 Difference]: Without dead ends: 49766 [2018-10-27 00:24:34,569 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 415 GetRequests, 407 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 00:24:34,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49766 states. [2018-10-27 00:24:35,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49766 to 49764. [2018-10-27 00:24:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49764 states. [2018-10-27 00:24:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49764 states to 49764 states and 58268 transitions. [2018-10-27 00:24:35,358 INFO L78 Accepts]: Start accepts. Automaton has 49764 states and 58268 transitions. Word has length 414 [2018-10-27 00:24:35,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:24:35,358 INFO L481 AbstractCegarLoop]: Abstraction has 49764 states and 58268 transitions. [2018-10-27 00:24:35,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 00:24:35,359 INFO L276 IsEmpty]: Start isEmpty. Operand 49764 states and 58268 transitions. [2018-10-27 00:24:35,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2018-10-27 00:24:35,400 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:24:35,401 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:24:35,401 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:24:35,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:24:35,402 INFO L82 PathProgramCache]: Analyzing trace with hash 453031471, now seen corresponding path program 1 times [2018-10-27 00:24:35,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:24:35,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:24:35,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:24:35,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:24:35,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:24:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:24:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 122 proven. 447 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 00:24:36,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:24:36,933 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:24:36,933 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 602 with the following transitions: [2018-10-27 00:24:36,934 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1747], [1749], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2484], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2732], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 00:24:36,944 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:24:36,945 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-27 00:24:37,664 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-27 00:24:37,665 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-27 00:24:37,666 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-27 00:24:37,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:24:37,667 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 00:24:37,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:24:37,675 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 00:24:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:24:37,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 00:24:37,939 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 00:24:38,141 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 00:24:38,141 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:24:38,146 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:24:38,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:24:38 BoogieIcfgContainer [2018-10-27 00:24:38,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:24:38,148 INFO L168 Benchmark]: Toolchain (without parser) took 219616.35 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 329.8 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-10-27 00:24:38,149 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. [2018-10-27 00:24:38,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1717.31 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-27 00:24:38,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 450.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -966.5 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-27 00:24:38,152 INFO L168 Benchmark]: Boogie Preprocessor took 256.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:24:38,157 INFO L168 Benchmark]: RCFGBuilder took 8809.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 505.1 MB). Peak memory consumption was 505.1 MB. Max. memory is 7.1 GB. [2018-10-27 00:24:38,158 INFO L168 Benchmark]: TraceAbstraction took 208376.74 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.1 GB in the end (delta: 628.8 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 00:24:38,171 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 1717.31 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 450.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -966.5 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 256.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8809.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 505.1 MB). Peak memory consumption was 505.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208376.74 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.1 GB in the end (delta: 628.8 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 72). Cancelled while BasicCegarLoop was analyzing trace of length 602 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 208.2s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 186.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3445 SDtfs, 15955 SDslu, 1355 SDs, 0 SdLazy, 36728 SolverSat, 9222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 131.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 465 GetRequests, 426 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49764occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.6s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9975567603607397 AbsIntWeakeningRatio, 0.06295399515738499 AbsIntAvgWeakeningVarsNumRemoved, 910.1573849878935 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 4403 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1391 NumberOfCodeBlocks, 1391 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1383 ConstructedInterpolants, 0 QuantifiedInterpolants, 2153327 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 392/549 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown