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_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:32:14,680 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:32:14,684 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:32:14,696 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:32:14,697 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:32:14,698 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:32:14,699 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:32:14,701 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:32:14,703 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:32:14,703 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:32:14,704 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:32:14,705 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:32:14,705 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:32:14,706 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:32:14,708 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:32:14,708 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:32:14,709 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:32:14,711 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:32:14,713 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:32:14,715 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:32:14,716 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:32:14,717 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:32:14,719 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:32:14,726 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:32:14,726 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:32:14,727 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:32:14,728 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:32:14,728 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:32:14,757 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:32:14,757 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:32:14,758 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:32:14,758 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:32:14,758 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:32:14,759 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:32:14,759 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:32:14,759 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:32:14,759 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:32:14,760 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:32:14,760 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:32:14,760 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:32:14,761 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:32:14,761 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:32:14,762 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:32:14,762 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:32:14,762 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:32:14,762 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:32:14,762 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:32:14,763 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:32:14,764 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:32:14,764 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:32:14,764 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:32:14,765 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:32:14,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:32:14,765 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:32:14,765 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:32:14,765 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:32:14,766 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:32:14,766 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:32:14,766 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:32:14,767 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:32:14,767 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:32:14,767 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:32:14,820 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:32:14,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:32:14,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:32:14,838 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:32:14,838 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:32:14,839 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label55_false-unreach-call.c [2018-10-27 00:32:14,899 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c24efef69/ffae2ac67c9144d89869e6a4fbd66fc1/FLAGffd1960ad [2018-10-27 00:32:15,846 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:32:15,847 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label55_false-unreach-call.c [2018-10-27 00:32:15,897 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c24efef69/ffae2ac67c9144d89869e6a4fbd66fc1/FLAGffd1960ad [2018-10-27 00:32:15,915 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c24efef69/ffae2ac67c9144d89869e6a4fbd66fc1 [2018-10-27 00:32:15,929 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:32:15,931 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:32:15,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:32:15,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:32:15,938 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:32:15,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:15" (1/1) ... [2018-10-27 00:32:15,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1086b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:15, skipping insertion in model container [2018-10-27 00:32:15,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:15" (1/1) ... [2018-10-27 00:32:15,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:32:16,218 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:32:18,154 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:32:18,159 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:32:19,307 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:32:19,363 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:32:19,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19 WrapperNode [2018-10-27 00:32:19,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:32:19,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:32:19,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:32:19,365 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:32:19,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (1/1) ... [2018-10-27 00:32:19,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (1/1) ... [2018-10-27 00:32:20,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:32:20,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:32:20,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:32:20,103 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:32:20,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (1/1) ... [2018-10-27 00:32:20,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (1/1) ... [2018-10-27 00:32:20,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (1/1) ... [2018-10-27 00:32:20,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (1/1) ... [2018-10-27 00:32:20,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (1/1) ... [2018-10-27 00:32:20,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (1/1) ... [2018-10-27 00:32:20,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (1/1) ... [2018-10-27 00:32:20,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:32:20,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:32:20,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:32:20,562 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:32:20,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (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 [2018-10-27 00:32:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:32:20,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:32:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-27 00:32:20,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-27 00:32:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-27 00:32:20,629 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-27 00:32:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 00:32:20,630 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 00:32:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 00:32:20,630 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 00:32:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:32:20,631 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:32:20,631 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:32:20,631 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:32:20,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:32:20,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:32:20,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:32:20,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:32:38,403 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:32:38,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:38 BoogieIcfgContainer [2018-10-27 00:32:38,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:32:38,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:32:38,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:32:38,408 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:32:38,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:32:15" (1/3) ... [2018-10-27 00:32:38,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742f3d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:38, skipping insertion in model container [2018-10-27 00:32:38,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:19" (2/3) ... [2018-10-27 00:32:38,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742f3d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:38, skipping insertion in model container [2018-10-27 00:32:38,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:38" (3/3) ... [2018-10-27 00:32:38,412 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label55_false-unreach-call.c [2018-10-27 00:32:38,423 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:32:38,434 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:32:38,451 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:32:38,502 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:32:38,503 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:32:38,503 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:32:38,503 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:32:38,503 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:32:38,503 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:32:38,504 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:32:38,504 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:32:38,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-27 00:32:38,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-27 00:32:38,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:32:38,569 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] [2018-10-27 00:32:38,572 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:32:38,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:32:38,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1214418350, now seen corresponding path program 1 times [2018-10-27 00:32:38,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:32:38,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:32:38,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:32:38,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:32:38,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:32:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:32:39,026 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:32:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:32:39,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:32:39,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:32:39,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:32:39,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:32:39,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:32:39,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:32:39,169 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-27 00:33:00,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:33:00,315 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-10-27 00:33:00,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:33:00,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-10-27 00:33:00,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:33:00,380 INFO L225 Difference]: With dead ends: 4998 [2018-10-27 00:33:00,380 INFO L226 Difference]: Without dead ends: 3218 [2018-10-27 00:33:00,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:33:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-27 00:33:00,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-10-27 00:33:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-27 00:33:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-10-27 00:33:00,599 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 21 [2018-10-27 00:33:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:33:00,600 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-10-27 00:33:00,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:33:00,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-10-27 00:33:00,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-27 00:33:00,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:33:00,606 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:33:00,606 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:33:00,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:33:00,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1828457188, now seen corresponding path program 1 times [2018-10-27 00:33:00,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:33:00,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:00,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:33:00,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:00,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:33:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:33:01,005 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:33:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:33:01,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:33:01,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:33:01,399 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:33:01,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:33:01,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:33:01,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:33:01,403 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-10-27 00:33:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:33:32,326 INFO L93 Difference]: Finished difference Result 10756 states and 19784 transitions. [2018-10-27 00:33:32,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 00:33:32,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-27 00:33:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:33:32,366 INFO L225 Difference]: With dead ends: 10756 [2018-10-27 00:33:32,367 INFO L226 Difference]: Without dead ends: 7547 [2018-10-27 00:33:32,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:33:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7547 states. [2018-10-27 00:33:32,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7547 to 7507. [2018-10-27 00:33:32,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7507 states. [2018-10-27 00:33:32,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7507 states to 7507 states and 12462 transitions. [2018-10-27 00:33:32,574 INFO L78 Accepts]: Start accepts. Automaton has 7507 states and 12462 transitions. Word has length 93 [2018-10-27 00:33:32,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:33:32,574 INFO L481 AbstractCegarLoop]: Abstraction has 7507 states and 12462 transitions. [2018-10-27 00:33:32,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:33:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 7507 states and 12462 transitions. [2018-10-27 00:33:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-27 00:33:32,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:33:32,578 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:33:32,578 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:33:32,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:33:32,579 INFO L82 PathProgramCache]: Analyzing trace with hash -311823129, now seen corresponding path program 1 times [2018-10-27 00:33:32,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:33:32,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:32,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:33:32,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:32,580 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:33:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:33:32,881 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:33:33,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:33:33,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:33:33,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:33:33,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:33:33,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:33:33,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:33:33,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:33:33,028 INFO L87 Difference]: Start difference. First operand 7507 states and 12462 transitions. Second operand 6 states. [2018-10-27 00:34:03,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:34:03,129 INFO L93 Difference]: Finished difference Result 23932 states and 40056 transitions. [2018-10-27 00:34:03,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:34:03,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-27 00:34:03,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:34:03,222 INFO L225 Difference]: With dead ends: 23932 [2018-10-27 00:34:03,222 INFO L226 Difference]: Without dead ends: 16431 [2018-10-27 00:34:03,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:34:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16431 states. [2018-10-27 00:34:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16431 to 16253. [2018-10-27 00:34:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16253 states. [2018-10-27 00:34:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16253 states to 16253 states and 25394 transitions. [2018-10-27 00:34:03,630 INFO L78 Accepts]: Start accepts. Automaton has 16253 states and 25394 transitions. Word has length 95 [2018-10-27 00:34:03,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:34:03,630 INFO L481 AbstractCegarLoop]: Abstraction has 16253 states and 25394 transitions. [2018-10-27 00:34:03,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:34:03,631 INFO L276 IsEmpty]: Start isEmpty. Operand 16253 states and 25394 transitions. [2018-10-27 00:34:03,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-27 00:34:03,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:34:03,635 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:34:03,635 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:34:03,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:34:03,636 INFO L82 PathProgramCache]: Analyzing trace with hash -390491480, now seen corresponding path program 1 times [2018-10-27 00:34:03,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:34:03,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:03,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:34:03,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:03,638 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:34:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:34:04,129 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:34:04,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:34:04,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:34:04,129 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:34:04,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:34:04,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:34:04,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:34:04,131 INFO L87 Difference]: Start difference. First operand 16253 states and 25394 transitions. Second operand 6 states. [2018-10-27 00:34:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:34:47,901 INFO L93 Difference]: Finished difference Result 61578 states and 99899 transitions. [2018-10-27 00:34:47,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:34:47,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-27 00:34:47,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:34:48,393 INFO L225 Difference]: With dead ends: 61578 [2018-10-27 00:34:48,394 INFO L226 Difference]: Without dead ends: 45331 [2018-10-27 00:34:48,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:34:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45331 states. [2018-10-27 00:34:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45331 to 45228. [2018-10-27 00:34:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45228 states. [2018-10-27 00:34:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45228 states to 45228 states and 66677 transitions. [2018-10-27 00:34:49,468 INFO L78 Accepts]: Start accepts. Automaton has 45228 states and 66677 transitions. Word has length 117 [2018-10-27 00:34:49,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:34:49,469 INFO L481 AbstractCegarLoop]: Abstraction has 45228 states and 66677 transitions. [2018-10-27 00:34:49,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:34:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 45228 states and 66677 transitions. [2018-10-27 00:34:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-27 00:34:49,471 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:34:49,471 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:34:49,472 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:34:49,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:34:49,472 INFO L82 PathProgramCache]: Analyzing trace with hash 253376156, now seen corresponding path program 1 times [2018-10-27 00:34:49,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:34:49,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:49,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:34:49,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:49,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:34:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:34:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:34:49,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:34:49,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:34:49,819 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:34:49,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:34:49,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:34:49,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:34:49,821 INFO L87 Difference]: Start difference. First operand 45228 states and 66677 transitions. Second operand 5 states. [2018-10-27 00:35:21,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:35:21,539 INFO L93 Difference]: Finished difference Result 135627 states and 211887 transitions. [2018-10-27 00:35:21,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 00:35:21,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-10-27 00:35:21,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:35:21,876 INFO L225 Difference]: With dead ends: 135627 [2018-10-27 00:35:21,877 INFO L226 Difference]: Without dead ends: 90405 [2018-10-27 00:35:21,988 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 [2018-10-27 00:35:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90405 states. [2018-10-27 00:35:23,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90405 to 89679. [2018-10-27 00:35:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89679 states. [2018-10-27 00:35:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89679 states to 89679 states and 124689 transitions. [2018-10-27 00:35:24,794 INFO L78 Accepts]: Start accepts. Automaton has 89679 states and 124689 transitions. Word has length 126 [2018-10-27 00:35:24,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:35:24,795 INFO L481 AbstractCegarLoop]: Abstraction has 89679 states and 124689 transitions. [2018-10-27 00:35:24,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:35:24,795 INFO L276 IsEmpty]: Start isEmpty. Operand 89679 states and 124689 transitions. [2018-10-27 00:35:24,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-27 00:35:24,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:35:24,799 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:35:24,799 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:35:24,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:35:24,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1780754725, now seen corresponding path program 1 times [2018-10-27 00:35:24,801 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:35:24,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:24,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:35:24,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:24,802 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:35:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:35:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:35:25,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:35:25,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:35:25,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:35:25,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:35:25,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:35:25,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:35:25,140 INFO L87 Difference]: Start difference. First operand 89679 states and 124689 transitions. Second operand 6 states. [2018-10-27 00:35:49,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:35:49,638 INFO L93 Difference]: Finished difference Result 212439 states and 313770 transitions. [2018-10-27 00:35:49,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:35:49,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-27 00:35:49,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:35:50,070 INFO L225 Difference]: With dead ends: 212439 [2018-10-27 00:35:50,070 INFO L226 Difference]: Without dead ends: 122766 [2018-10-27 00:35:50,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:35:50,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122766 states. [2018-10-27 00:35:53,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122766 to 122401. [2018-10-27 00:35:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122401 states. [2018-10-27 00:35:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122401 states to 122401 states and 167637 transitions. [2018-10-27 00:35:53,397 INFO L78 Accepts]: Start accepts. Automaton has 122401 states and 167637 transitions. Word has length 154 [2018-10-27 00:35:53,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:35:53,398 INFO L481 AbstractCegarLoop]: Abstraction has 122401 states and 167637 transitions. [2018-10-27 00:35:53,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:35:53,398 INFO L276 IsEmpty]: Start isEmpty. Operand 122401 states and 167637 transitions. [2018-10-27 00:35:53,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-27 00:35:53,404 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:35:53,404 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:35:53,404 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:35:53,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:35:53,405 INFO L82 PathProgramCache]: Analyzing trace with hash 722491994, now seen corresponding path program 1 times [2018-10-27 00:35:53,405 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:35:53,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:53,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:35:53,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:35:53,406 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:35:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:35:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 00:35:53,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:35:53,630 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:35:53,631 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 193 with the following transitions: [2018-10-27 00:35:53,633 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5294], [5296], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [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], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-27 00:35:53,707 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:35:53,707 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:35:57,818 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:35:57,904 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:35:57,906 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 00:35:57,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:35:57,919 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:35:59,807 INFO L227 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 75.11% of their original sizes. [2018-10-27 00:35:59,808 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:36:00,299 INFO L415 sIntCurrentIteration]: We unified 191 AI predicates to 191 [2018-10-27 00:36:00,299 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:36:00,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:36:00,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 00:36:00,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:36:00,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 00:36:00,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 00:36:00,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:36:00,304 INFO L87 Difference]: Start difference. First operand 122401 states and 167637 transitions. Second operand 7 states. Received shutdown request... [2018-10-27 00:36:07,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:36:07,579 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:36:07,584 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:36:07,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:36:07 BoogieIcfgContainer [2018-10-27 00:36:07,585 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:36:07,586 INFO L168 Benchmark]: Toolchain (without parser) took 231655.74 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-27 00:36:07,587 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-27 00:36:07,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3431.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 996.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:36:07,589 INFO L168 Benchmark]: Boogie Procedure Inliner took 738.19 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 848.8 MB). Free memory was 996.7 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:36:07,589 INFO L168 Benchmark]: Boogie Preprocessor took 458.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:36:07,590 INFO L168 Benchmark]: RCFGBuilder took 17841.94 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 178.8 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 484.9 MB). Peak memory consumption was 665.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:36:07,591 INFO L168 Benchmark]: TraceAbstraction took 209180.26 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -753.1 MB). Peak memory consumption was 465.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:36:07,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3431.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 996.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 738.19 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 848.8 MB). Free memory was 996.7 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 458.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17841.94 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 178.8 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 484.9 MB). Peak memory consumption was 665.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209180.26 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -753.1 MB). Peak memory consumption was 465.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 58). Cancelled while BasicCegarLoop was constructing difference of abstraction (122401states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (434 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 209.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 191.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3664 SDtfs, 35424 SDslu, 4407 SDs, 0 SdLazy, 66320 SolverSat, 14565 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 161.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 244 GetRequests, 200 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122401occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9951349174385824 AbsIntWeakeningRatio, 0.14659685863874344 AbsIntAvgWeakeningVarsNumRemoved, 1022.9633507853404 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 1415 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 798 NumberOfCodeBlocks, 798 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 791 ConstructedInterpolants, 0 QuantifiedInterpolants, 499990 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 103/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown