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/Problem17_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:12:16,524 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:12:16,527 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:12:16,546 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:12:16,547 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:12:16,551 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:12:16,553 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:12:16,556 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:12:16,558 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:12:16,559 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:12:16,560 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:12:16,560 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:12:16,570 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:12:16,572 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:12:16,575 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:12:16,576 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:12:16,576 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:12:16,580 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:12:16,582 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:12:16,585 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:12:16,587 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:12:16,588 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:12:16,591 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:12:16,596 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:12:16,597 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:12:16,597 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:12:16,598 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:12:16,598 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 [2018-10-24 22:12:16,613 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:12:16,614 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:12:16,615 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:12:16,615 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:12:16,615 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:12:16,615 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:12:16,615 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:12:16,616 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:12:16,616 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:12:16,616 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:12:16,616 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:12:16,616 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:12:16,617 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:12:16,617 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:12:16,617 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:12:16,617 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:12:16,618 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:12:16,618 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:12:16,618 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:12:16,618 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:12:16,618 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:12:16,619 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:12:16,619 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:12:16,619 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:12:16,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:12:16,619 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:12:16,620 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:12:16,620 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:12:16,620 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:12:16,620 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:12:16,620 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:12:16,621 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:12:16,621 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:12:16,621 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:12:16,666 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:12:16,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:12:16,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:12:16,689 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:12:16,689 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:12:16,690 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label44_true-unreach-call.c [2018-10-24 22:12:16,771 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/458148506/7f5de2d31e6c46c29c7f2680a158d1bf/FLAGe37c9055a [2018-10-24 22:12:17,525 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:12:17,527 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label44_true-unreach-call.c [2018-10-24 22:12:17,556 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/458148506/7f5de2d31e6c46c29c7f2680a158d1bf/FLAGe37c9055a [2018-10-24 22:12:17,575 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/458148506/7f5de2d31e6c46c29c7f2680a158d1bf [2018-10-24 22:12:17,585 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:12:17,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:12:17,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:12:17,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:12:17,592 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:12:17,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:12:17" (1/1) ... [2018-10-24 22:12:17,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:17, skipping insertion in model container [2018-10-24 22:12:17,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:12:17" (1/1) ... [2018-10-24 22:12:17,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:12:17,729 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:12:18,761 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:12:18,766 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:12:19,215 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:12:19,242 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:12:19,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19 WrapperNode [2018-10-24 22:12:19,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:12:19,244 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:12:19,244 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:12:19,244 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:12:19,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (1/1) ... [2018-10-24 22:12:19,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (1/1) ... [2018-10-24 22:12:19,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:12:19,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:12:19,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:12:19,751 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:12:19,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (1/1) ... [2018-10-24 22:12:19,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (1/1) ... [2018-10-24 22:12:19,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (1/1) ... [2018-10-24 22:12:19,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (1/1) ... [2018-10-24 22:12:19,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (1/1) ... [2018-10-24 22:12:19,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (1/1) ... [2018-10-24 22:12:19,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (1/1) ... [2018-10-24 22:12:19,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:12:19,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:12:19,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:12:19,990 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:12:19,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (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 [2018-10-24 22:12:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:12:20,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:12:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:12:20,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:12:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:12:20,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:12:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:12:20,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:12:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:12:20,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:12:31,563 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:12:31,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:12:31 BoogieIcfgContainer [2018-10-24 22:12:31,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:12:31,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:12:31,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:12:31,573 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:12:31,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:12:17" (1/3) ... [2018-10-24 22:12:31,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444506a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:12:31, skipping insertion in model container [2018-10-24 22:12:31,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:12:19" (2/3) ... [2018-10-24 22:12:31,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444506a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:12:31, skipping insertion in model container [2018-10-24 22:12:31,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:12:31" (3/3) ... [2018-10-24 22:12:31,578 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label44_true-unreach-call.c [2018-10-24 22:12:31,587 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:12:31,596 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:12:31,615 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:12:31,664 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:12:31,664 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:12:31,664 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:12:31,664 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:12:31,664 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:12:31,665 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:12:31,665 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:12:31,665 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:12:31,700 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:12:31,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-24 22:12:31,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:12:31,711 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] [2018-10-24 22:12:31,713 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:12:31,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:12:31,722 INFO L82 PathProgramCache]: Analyzing trace with hash 203482100, now seen corresponding path program 1 times [2018-10-24 22:12:31,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:12:31,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:31,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:12:31,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:31,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:12:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:12:32,218 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 22:12:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:12:32,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:12:32,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:12:32,232 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:12:32,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:12:32,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:12:32,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:12:32,259 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:12:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:12:45,115 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-10-24 22:12:45,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:12:45,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-10-24 22:12:45,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:12:45,153 INFO L225 Difference]: With dead ends: 2118 [2018-10-24 22:12:45,153 INFO L226 Difference]: Without dead ends: 1508 [2018-10-24 22:12:45,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:12:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-10-24 22:12:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-10-24 22:12:45,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-10-24 22:12:45,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-10-24 22:12:45,325 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 42 [2018-10-24 22:12:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:12:45,326 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-10-24 22:12:45,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:12:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-10-24 22:12:45,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 22:12:45,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:12:45,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:12:45,336 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:12:45,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:12:45,337 INFO L82 PathProgramCache]: Analyzing trace with hash -2133934966, now seen corresponding path program 1 times [2018-10-24 22:12:45,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:12:45,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:45,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:12:45,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:45,341 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:12:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:12:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:12:45,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:12:45,778 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:12:45,779 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 118 with the following transitions: [2018-10-24 22:12:45,781 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [946], [948], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:12:45,852 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:12:45,852 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:12:47,365 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:13:09,649 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:13:09,650 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:13:09,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:13:09,667 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:13:09,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:13:09,667 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 [2018-10-24 22:13:09,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:13:09,686 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:13:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:13:09,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:13:38,485 WARN L179 SmtUtils]: Spent 24.25 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 22:13:58,834 WARN L179 SmtUtils]: Spent 16.14 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 22:13:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:13:59,202 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:14:03,778 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 22:14:03,835 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 22:14:06,575 WARN L179 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 22:14:06,903 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:14:06,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 22:14:06,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 22:14:06,941 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:14:06,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:14:06,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:14:06,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=160, Unknown=5, NotChecked=0, Total=210 [2018-10-24 22:14:06,943 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. [2018-10-24 22:15:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:15:24,325 INFO L93 Difference]: Finished difference Result 3905 states and 6155 transitions. [2018-10-24 22:15:24,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:15:24,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 22:15:24,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:15:24,347 INFO L225 Difference]: With dead ends: 3905 [2018-10-24 22:15:24,347 INFO L226 Difference]: Without dead ends: 2872 [2018-10-24 22:15:24,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 56.5s TimeCoverageRelationStatistics Valid=52, Invalid=183, Unknown=5, NotChecked=0, Total=240 [2018-10-24 22:15:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2018-10-24 22:15:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 2843. [2018-10-24 22:15:24,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2843 states. [2018-10-24 22:15:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2843 states to 2843 states and 4225 transitions. [2018-10-24 22:15:24,517 INFO L78 Accepts]: Start accepts. Automaton has 2843 states and 4225 transitions. Word has length 117 [2018-10-24 22:15:24,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:15:24,518 INFO L481 AbstractCegarLoop]: Abstraction has 2843 states and 4225 transitions. [2018-10-24 22:15:24,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:15:24,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2843 states and 4225 transitions. [2018-10-24 22:15:24,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 22:15:24,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:15:24,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:15:24,542 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:15:24,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:15:24,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2131862897, now seen corresponding path program 1 times [2018-10-24 22:15:24,544 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:15:24,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:15:24,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:15:24,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:15:24,546 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:15:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:15:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:15:24,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:15:24,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:15:24,715 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:15:24,716 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:15:24,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:15:24,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:15:24,716 INFO L87 Difference]: Start difference. First operand 2843 states and 4225 transitions. Second operand 4 states. [2018-10-24 22:15:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:15:32,054 INFO L93 Difference]: Finished difference Result 10477 states and 16193 transitions. [2018-10-24 22:15:32,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:15:32,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-10-24 22:15:32,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:15:32,114 INFO L225 Difference]: With dead ends: 10477 [2018-10-24 22:15:32,114 INFO L226 Difference]: Without dead ends: 7640 [2018-10-24 22:15:32,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:15:32,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7640 states. [2018-10-24 22:15:32,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7640 to 7638. [2018-10-24 22:15:32,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7638 states. [2018-10-24 22:15:32,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7638 states to 7638 states and 11016 transitions. [2018-10-24 22:15:32,349 INFO L78 Accepts]: Start accepts. Automaton has 7638 states and 11016 transitions. Word has length 152 [2018-10-24 22:15:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:15:32,350 INFO L481 AbstractCegarLoop]: Abstraction has 7638 states and 11016 transitions. [2018-10-24 22:15:32,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:15:32,350 INFO L276 IsEmpty]: Start isEmpty. Operand 7638 states and 11016 transitions. [2018-10-24 22:15:32,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-24 22:15:32,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:15:32,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:15:32,356 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:15:32,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:15:32,356 INFO L82 PathProgramCache]: Analyzing trace with hash 361445737, now seen corresponding path program 1 times [2018-10-24 22:15:32,356 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:15:32,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:15:32,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:15:32,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:15:32,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:15:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:15:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:15:32,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:15:32,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:15:32,647 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:15:32,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:15:32,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:15:32,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:15:32,648 INFO L87 Difference]: Start difference. First operand 7638 states and 11016 transitions. Second operand 5 states. [2018-10-24 22:15:50,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:15:50,528 INFO L93 Difference]: Finished difference Result 23789 states and 36144 transitions. [2018-10-24 22:15:50,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:15:50,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2018-10-24 22:15:50,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:15:50,625 INFO L225 Difference]: With dead ends: 23789 [2018-10-24 22:15:50,625 INFO L226 Difference]: Without dead ends: 16157 [2018-10-24 22:15:50,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:15:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16157 states. [2018-10-24 22:15:51,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16157 to 16122. [2018-10-24 22:15:51,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16122 states. [2018-10-24 22:15:51,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16122 states to 16122 states and 22522 transitions. [2018-10-24 22:15:51,106 INFO L78 Accepts]: Start accepts. Automaton has 16122 states and 22522 transitions. Word has length 180 [2018-10-24 22:15:51,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:15:51,106 INFO L481 AbstractCegarLoop]: Abstraction has 16122 states and 22522 transitions. [2018-10-24 22:15:51,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:15:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 16122 states and 22522 transitions. [2018-10-24 22:15:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-24 22:15:51,112 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:15:51,116 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 22:15:51,116 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:15:51,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:15:51,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2127998129, now seen corresponding path program 1 times [2018-10-24 22:15:51,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:15:51,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:15:51,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:15:51,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:15:51,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:15:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:15:51,473 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:15:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 71 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 22:15:51,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:15:51,914 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:15:51,914 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-10-24 22:15:51,915 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [946], [948], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1286], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:15:51,922 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:15:51,922 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:15:53,212 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:16:17,948 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:16:17,949 INFO L272 AbstractInterpreter]: Visited 98 different actions 649 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:16:17,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:16:17,957 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:16:17,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:16:17,957 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:16:17,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:16:17,973 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:16:18,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:16:18,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:16:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:16:18,135 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:16:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:16:18,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:16:18,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-24 22:16:18,311 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:16:18,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 22:16:18,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 22:16:18,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:16:18,313 INFO L87 Difference]: Start difference. First operand 16122 states and 22522 transitions. Second operand 9 states. Received shutdown request... [2018-10-24 22:16:21,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:16:21,047 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:16:21,053 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:16:21,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:16:21 BoogieIcfgContainer [2018-10-24 22:16:21,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:16:21,054 INFO L168 Benchmark]: Toolchain (without parser) took 243468.80 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 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 514.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:21,056 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:16:21,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1655.60 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:21,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 506.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -900.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:21,058 INFO L168 Benchmark]: Boogie Preprocessor took 239.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:21,059 INFO L168 Benchmark]: RCFGBuilder took 11574.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 467.7 MB). Peak memory consumption was 467.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:21,062 INFO L168 Benchmark]: TraceAbstraction took 229488.55 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:16:21,067 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1655.60 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 506.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -900.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 239.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11574.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 467.7 MB). Peak memory consumption was 467.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229488.55 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 30.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 113). Cancelled while BasicCegarLoop was constructing difference of abstraction (16122states) and FLOYD_HOARE automaton (currently 8 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (4691 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 229.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 118.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1944 SDtfs, 7279 SDslu, 1342 SDs, 0 SdLazy, 15191 SolverSat, 4535 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 111.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 688 GetRequests, 647 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 57.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16122occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 49.9s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 4 MinimizatonAttempts, 535 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 59.0s InterpolantComputationTime, 1020 NumberOfCodeBlocks, 1020 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1334 ConstructedInterpolants, 116 QuantifiedInterpolants, 1625945 SizeOfPredicates, 3 NumberOfNonLiveVariables, 667 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 535/610 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown