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/Problem19_label19_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:04:50,670 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:04:50,672 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:04:50,685 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:04:50,685 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:04:50,686 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:04:50,688 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:04:50,690 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:04:50,691 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:04:50,692 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:04:50,693 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:04:50,694 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:04:50,695 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:04:50,696 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:04:50,697 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:04:50,698 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:04:50,699 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:04:50,701 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:04:50,703 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:04:50,705 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:04:50,707 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:04:50,708 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:04:50,711 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:04:50,728 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 19:04:50,729 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 19:04:50,730 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 19:04:50,732 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 19:04:50,732 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 19:04:50,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:04:50,757 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:04:50,758 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:04:50,758 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:04:50,758 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:04:50,758 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:04:50,758 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:04:50,759 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:04:50,759 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:04:50,759 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:04:50,759 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:04:50,759 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:04:50,760 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:04:50,760 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:04:50,761 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:04:50,761 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:04:50,761 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:04:50,761 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:04:50,761 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:04:50,762 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:04:50,762 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:04:50,762 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:04:50,762 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:04:50,762 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:04:50,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:04:50,763 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:04:50,763 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:04:50,763 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:04:50,763 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:04:50,764 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:04:50,764 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:04:50,764 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:04:50,764 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:04:50,764 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:04:50,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:04:50,850 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:04:50,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:04:50,856 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:04:50,856 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:04:50,857 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label19_false-unreach-call.c [2018-10-24 19:04:50,925 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/754f984d8/9e7bcc42daa148caa10a91ec4199206f/FLAG369bd094d [2018-10-24 19:04:51,828 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:04:51,829 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label19_false-unreach-call.c [2018-10-24 19:04:51,879 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/754f984d8/9e7bcc42daa148caa10a91ec4199206f/FLAG369bd094d [2018-10-24 19:04:51,894 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/754f984d8/9e7bcc42daa148caa10a91ec4199206f [2018-10-24 19:04:51,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:04:51,909 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:04:51,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:04:51,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:04:51,915 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:04:51,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:04:51" (1/1) ... [2018-10-24 19:04:51,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26998074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:51, skipping insertion in model container [2018-10-24 19:04:51,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:04:51" (1/1) ... [2018-10-24 19:04:51,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:04:52,182 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:04:54,211 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:04:54,215 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:04:55,367 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:04:55,428 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:04:55,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55 WrapperNode [2018-10-24 19:04:55,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:04:55,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:04:55,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:04:55,430 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:04:55,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (1/1) ... [2018-10-24 19:04:55,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (1/1) ... [2018-10-24 19:04:56,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:04:56,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:04:56,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:04:56,188 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:04:56,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (1/1) ... [2018-10-24 19:04:56,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (1/1) ... [2018-10-24 19:04:56,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (1/1) ... [2018-10-24 19:04:56,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (1/1) ... [2018-10-24 19:04:56,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (1/1) ... [2018-10-24 19:04:56,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (1/1) ... [2018-10-24 19:04:56,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (1/1) ... [2018-10-24 19:04:56,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:04:56,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:04:56,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:04:56,625 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:04:56,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (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 19:04:56,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:04:56,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:04:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 19:04:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 19:04:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 19:04:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 19:04:56,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 19:04:56,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 19:04:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 19:04:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 19:04:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 19:04:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 19:04:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:04:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:04:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:04:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:04:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:04:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:05:15,742 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:05:15,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:05:15 BoogieIcfgContainer [2018-10-24 19:05:15,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:05:15,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:05:15,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:05:15,748 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:05:15,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:04:51" (1/3) ... [2018-10-24 19:05:15,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d819646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:05:15, skipping insertion in model container [2018-10-24 19:05:15,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:04:55" (2/3) ... [2018-10-24 19:05:15,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d819646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:05:15, skipping insertion in model container [2018-10-24 19:05:15,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:05:15" (3/3) ... [2018-10-24 19:05:15,752 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label19_false-unreach-call.c [2018-10-24 19:05:15,762 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:05:15,778 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:05:15,798 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:05:15,861 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:05:15,861 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:05:15,861 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:05:15,861 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:05:15,862 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:05:15,862 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:05:15,862 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:05:15,862 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:05:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 19:05:15,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-24 19:05:15,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:05:15,929 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] [2018-10-24 19:05:15,931 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:05:15,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:05:15,938 INFO L82 PathProgramCache]: Analyzing trace with hash -316580422, now seen corresponding path program 1 times [2018-10-24 19:05:15,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:05:15,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:05:15,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:05:15,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:05:15,994 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:05:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:05:16,412 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:05:16,563 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 19:05:16,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:05:16,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:05:16,568 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:05:16,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:05:16,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:05:16,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:05:16,589 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 19:05:34,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:05:34,522 INFO L93 Difference]: Finished difference Result 5049 states and 9513 transitions. [2018-10-24 19:05:34,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:05:34,527 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-24 19:05:34,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:05:34,569 INFO L225 Difference]: With dead ends: 5049 [2018-10-24 19:05:34,569 INFO L226 Difference]: Without dead ends: 3269 [2018-10-24 19:05:34,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:05:34,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2018-10-24 19:05:34,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3218. [2018-10-24 19:05:34,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states. [2018-10-24 19:05:34,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5997 transitions. [2018-10-24 19:05:34,783 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5997 transitions. Word has length 31 [2018-10-24 19:05:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:05:34,784 INFO L481 AbstractCegarLoop]: Abstraction has 3218 states and 5997 transitions. [2018-10-24 19:05:34,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:05:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5997 transitions. [2018-10-24 19:05:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-24 19:05:34,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:05:34,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:34,791 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:05:34,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:05:34,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1827341156, now seen corresponding path program 1 times [2018-10-24 19:05:34,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:05:34,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:05:34,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:05:34,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:05:34,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:05:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:05:35,146 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:05:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:05:35,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:05:35,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:05:35,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:05:35,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:05:35,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:05:35,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:05:35,541 INFO L87 Difference]: Start difference. First operand 3218 states and 5997 transitions. Second operand 6 states. [2018-10-24 19:06:01,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:06:01,537 INFO L93 Difference]: Finished difference Result 12137 states and 23144 transitions. [2018-10-24 19:06:01,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:06:01,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-24 19:06:01,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:06:01,594 INFO L225 Difference]: With dead ends: 12137 [2018-10-24 19:06:01,594 INFO L226 Difference]: Without dead ends: 8925 [2018-10-24 19:06:01,609 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:06:01,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2018-10-24 19:06:01,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 8862. [2018-10-24 19:06:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8862 states. [2018-10-24 19:06:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8862 states to 8862 states and 14404 transitions. [2018-10-24 19:06:01,903 INFO L78 Accepts]: Start accepts. Automaton has 8862 states and 14404 transitions. Word has length 103 [2018-10-24 19:06:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:06:01,905 INFO L481 AbstractCegarLoop]: Abstraction has 8862 states and 14404 transitions. [2018-10-24 19:06:01,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:06:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 8862 states and 14404 transitions. [2018-10-24 19:06:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-24 19:06:01,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:06:01,916 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:01,916 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:06:01,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:06:01,917 INFO L82 PathProgramCache]: Analyzing trace with hash 478615574, now seen corresponding path program 1 times [2018-10-24 19:06:01,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:06:01,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:06:01,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:06:01,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:06:01,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:06:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:06:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:06:02,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:06:02,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:06:02,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:06:02,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:06:02,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:06:02,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:06:02,186 INFO L87 Difference]: Start difference. First operand 8862 states and 14404 transitions. Second operand 5 states. [2018-10-24 19:06:42,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:06:42,067 INFO L93 Difference]: Finished difference Result 32230 states and 52865 transitions. [2018-10-24 19:06:42,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 19:06:42,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2018-10-24 19:06:42,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:06:42,148 INFO L225 Difference]: With dead ends: 32230 [2018-10-24 19:06:42,148 INFO L226 Difference]: Without dead ends: 23374 [2018-10-24 19:06:42,185 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 19:06:42,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23374 states. [2018-10-24 19:06:42,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23374 to 23190. [2018-10-24 19:06:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23190 states. [2018-10-24 19:06:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23190 states to 23190 states and 32180 transitions. [2018-10-24 19:06:42,720 INFO L78 Accepts]: Start accepts. Automaton has 23190 states and 32180 transitions. Word has length 105 [2018-10-24 19:06:42,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:06:42,721 INFO L481 AbstractCegarLoop]: Abstraction has 23190 states and 32180 transitions. [2018-10-24 19:06:42,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:06:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 23190 states and 32180 transitions. [2018-10-24 19:06:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 19:06:42,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:06:42,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:42,726 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:06:42,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:06:42,731 INFO L82 PathProgramCache]: Analyzing trace with hash -727238078, now seen corresponding path program 1 times [2018-10-24 19:06:42,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:06:42,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:06:42,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:06:42,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:06:42,733 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:06:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:06:43,030 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:06:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:06:43,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:06:43,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:06:43,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:06:43,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:06:43,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:06:43,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:06:43,377 INFO L87 Difference]: Start difference. First operand 23190 states and 32180 transitions. Second operand 6 states. [2018-10-24 19:06:59,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:06:59,457 INFO L93 Difference]: Finished difference Result 52866 states and 76149 transitions. [2018-10-24 19:06:59,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:06:59,458 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-24 19:06:59,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:06:59,589 INFO L225 Difference]: With dead ends: 52866 [2018-10-24 19:06:59,589 INFO L226 Difference]: Without dead ends: 29682 [2018-10-24 19:06:59,639 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:06:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29682 states. [2018-10-24 19:07:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29682 to 29421. [2018-10-24 19:07:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29421 states. [2018-10-24 19:07:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29421 states to 29421 states and 40884 transitions. [2018-10-24 19:07:00,209 INFO L78 Accepts]: Start accepts. Automaton has 29421 states and 40884 transitions. Word has length 110 [2018-10-24 19:07:00,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:07:00,209 INFO L481 AbstractCegarLoop]: Abstraction has 29421 states and 40884 transitions. [2018-10-24 19:07:00,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:07:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 29421 states and 40884 transitions. [2018-10-24 19:07:00,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 19:07:00,213 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:07:00,213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:00,213 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:07:00,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:07:00,214 INFO L82 PathProgramCache]: Analyzing trace with hash 340192155, now seen corresponding path program 1 times [2018-10-24 19:07:00,214 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:07:00,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:07:00,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:07:00,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:07:00,216 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:07:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:07:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:07:00,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:07:00,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:07:00,561 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:07:00,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:07:00,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:07:00,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:07:00,562 INFO L87 Difference]: Start difference. First operand 29421 states and 40884 transitions. Second operand 5 states. [2018-10-24 19:07:23,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:07:23,561 INFO L93 Difference]: Finished difference Result 88569 states and 130012 transitions. [2018-10-24 19:07:23,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 19:07:23,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-10-24 19:07:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:07:23,777 INFO L225 Difference]: With dead ends: 88569 [2018-10-24 19:07:23,777 INFO L226 Difference]: Without dead ends: 59154 [2018-10-24 19:07:23,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 19:07:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59154 states. [2018-10-24 19:07:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59154 to 57940. [2018-10-24 19:07:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57940 states. [2018-10-24 19:07:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57940 states to 57940 states and 76957 transitions. [2018-10-24 19:07:25,270 INFO L78 Accepts]: Start accepts. Automaton has 57940 states and 76957 transitions. Word has length 160 [2018-10-24 19:07:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:07:25,272 INFO L481 AbstractCegarLoop]: Abstraction has 57940 states and 76957 transitions. [2018-10-24 19:07:25,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:07:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 57940 states and 76957 transitions. [2018-10-24 19:07:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 19:07:25,277 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:07:25,280 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:07:25,281 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:07:25,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:07:25,281 INFO L82 PathProgramCache]: Analyzing trace with hash 378808406, now seen corresponding path program 1 times [2018-10-24 19:07:25,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:07:25,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:07:25,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:07:25,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:07:25,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:07:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:07:25,580 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:07:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:07:25,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:07:25,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:07:25,664 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:07:25,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:07:25,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:07:25,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:07:25,665 INFO L87 Difference]: Start difference. First operand 57940 states and 76957 transitions. Second operand 6 states. [2018-10-24 19:07:48,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:07:48,999 INFO L93 Difference]: Finished difference Result 144062 states and 200939 transitions. [2018-10-24 19:07:48,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:07:49,000 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-10-24 19:07:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:07:49,288 INFO L225 Difference]: With dead ends: 144062 [2018-10-24 19:07:49,288 INFO L226 Difference]: Without dead ends: 86128 [2018-10-24 19:07:49,416 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 [2018-10-24 19:07:49,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86128 states. [2018-10-24 19:07:50,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86128 to 85671. [2018-10-24 19:07:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85671 states. [2018-10-24 19:07:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85671 states to 85671 states and 111195 transitions. [2018-10-24 19:07:51,883 INFO L78 Accepts]: Start accepts. Automaton has 85671 states and 111195 transitions. Word has length 170 [2018-10-24 19:07:51,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:07:51,883 INFO L481 AbstractCegarLoop]: Abstraction has 85671 states and 111195 transitions. [2018-10-24 19:07:51,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:07:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 85671 states and 111195 transitions. [2018-10-24 19:07:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-24 19:07:51,903 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:07:51,904 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 19:07:51,904 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:07:51,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:07:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash -170738894, now seen corresponding path program 1 times [2018-10-24 19:07:51,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:07:51,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:07:51,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:07:51,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:07:51,908 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:07:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:07:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 48 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:07:52,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:07:52,308 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:07:52,309 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-10-24 19:07:52,311 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5374], [5376], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5841], [5842], [5845], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 19:07:52,379 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:07:52,380 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:07:55,059 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:07:55,060 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 19:07:55,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:07:55,068 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:07:57,807 INFO L232 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 75.3% of their original sizes. [2018-10-24 19:07:57,807 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:07:58,330 INFO L413 sIntCurrentIteration]: We have 211 unified AI predicates [2018-10-24 19:07:58,331 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:07:58,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:07:58,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 19:07:58,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:07:58,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 19:07:58,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 19:07:58,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 19:07:58,334 INFO L87 Difference]: Start difference. First operand 85671 states and 111195 transitions. Second operand 7 states. [2018-10-24 19:08:05,150 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 19:08:27,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:08:27,303 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:08:27,309 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:08:27,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:08:27 BoogieIcfgContainer [2018-10-24 19:08:27,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:08:27,310 INFO L168 Benchmark]: Toolchain (without parser) took 215402.94 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -102.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 19:08:27,312 INFO L168 Benchmark]: CDTParser took 0.26 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. [2018-10-24 19:08:27,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3519.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:08:27,314 INFO L168 Benchmark]: Boogie Procedure Inliner took 757.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 865.6 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:08:27,315 INFO L168 Benchmark]: Boogie Preprocessor took 436.44 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. [2018-10-24 19:08:27,316 INFO L168 Benchmark]: RCFGBuilder took 19118.99 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 165.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 517.2 MB). Peak memory consumption was 682.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:08:27,317 INFO L168 Benchmark]: TraceAbstraction took 191564.94 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 204.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 19:08:27,326 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 3519.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 757.56 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 865.6 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 436.44 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.5 MB). Peak memory consumption was 52.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 19118.99 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 165.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 517.2 MB). Peak memory consumption was 682.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191564.94 ms. Allocated memory was 2.6 GB in the beginning and 3.9 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 1.5 GB in the end (delta: 204.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 88). Cancelled while BasicCegarLoop was constructing difference of abstraction (85671states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (15460 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 191.4s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 176.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3422 SDtfs, 37925 SDslu, 4322 SDs, 0 SdLazy, 57727 SolverSat, 15344 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 135.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 266 GetRequests, 221 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85671occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9954064892453517 AbsIntWeakeningRatio, 0.12796208530805686 AbsIntAvgWeakeningVarsNumRemoved, 1041.5734597156397 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 2230 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 891 NumberOfCodeBlocks, 891 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 884 ConstructedInterpolants, 0 QuantifiedInterpolants, 562931 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 173/258 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown