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/Problem13_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:22:52,601 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:22:52,603 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:22:52,618 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:22:52,619 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:22:52,619 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:22:52,621 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:22:52,622 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:22:52,625 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:22:52,628 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:22:52,632 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:22:52,632 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:22:52,633 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:22:52,634 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:22:52,640 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:22:52,640 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:22:52,641 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:22:52,645 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:22:52,647 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:22:52,649 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:22:52,650 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:22:52,651 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:22:52,653 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:22:52,660 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 01:22:52,685 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:22:52,685 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:22:52,686 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:22:52,686 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:22:52,687 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:22:52,687 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:22:52,687 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:22:52,687 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:22:52,687 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:22:52,688 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:22:52,688 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:22:52,688 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:22:52,689 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:22:52,689 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:22:52,689 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:22:52,689 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:22:52,689 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:22:52,690 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:22:52,690 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:22:52,690 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:22:52,690 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:22:52,690 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:22:52,691 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:22:52,691 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:22:52,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:22:52,691 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:22:52,691 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:22:52,692 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:22:52,692 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:22:52,692 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:22:52,692 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:22:52,692 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:22:52,693 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:22:52,693 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:22:52,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:22:52,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:22:52,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:22:52,769 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:22:52,769 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:22:52,770 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label01_true-unreach-call.c [2018-10-24 01:22:52,831 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4c7f575a2/2518ec1303104041a1a77aef0877e80a/FLAG85299a6ec [2018-10-24 01:22:53,635 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:22:53,636 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label01_true-unreach-call.c [2018-10-24 01:22:53,675 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4c7f575a2/2518ec1303104041a1a77aef0877e80a/FLAG85299a6ec [2018-10-24 01:22:53,694 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4c7f575a2/2518ec1303104041a1a77aef0877e80a [2018-10-24 01:22:53,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:22:53,708 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:22:53,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:22:53,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:22:53,714 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:22:53,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:22:53" (1/1) ... [2018-10-24 01:22:53,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab4c919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:53, skipping insertion in model container [2018-10-24 01:22:53,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:22:53" (1/1) ... [2018-10-24 01:22:53,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:22:53,903 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:22:55,310 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:22:55,314 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:22:56,053 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:22:56,090 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:22:56,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56 WrapperNode [2018-10-24 01:22:56,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:22:56,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:22:56,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:22:56,092 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:22:56,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (1/1) ... [2018-10-24 01:22:56,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (1/1) ... [2018-10-24 01:22:56,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:22:56,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:22:56,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:22:56,771 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:22:56,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (1/1) ... [2018-10-24 01:22:56,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (1/1) ... [2018-10-24 01:22:56,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (1/1) ... [2018-10-24 01:22:56,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (1/1) ... [2018-10-24 01:22:56,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (1/1) ... [2018-10-24 01:22:56,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (1/1) ... [2018-10-24 01:22:57,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (1/1) ... [2018-10-24 01:22:57,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:22:57,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:22:57,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:22:57,068 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:22:57,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (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 01:22:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:22:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:22:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:22:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:22:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:22:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:22:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:22:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:22:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:22:57,148 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:22:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:22:57,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:22:57,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:22:57,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:23:07,408 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:23:07,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:07 BoogieIcfgContainer [2018-10-24 01:23:07,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:23:07,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:23:07,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:23:07,413 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:23:07,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:22:53" (1/3) ... [2018-10-24 01:23:07,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bbb127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:07, skipping insertion in model container [2018-10-24 01:23:07,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:22:56" (2/3) ... [2018-10-24 01:23:07,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bbb127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:07, skipping insertion in model container [2018-10-24 01:23:07,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:07" (3/3) ... [2018-10-24 01:23:07,417 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label01_true-unreach-call.c [2018-10-24 01:23:07,426 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:23:07,436 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:23:07,454 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:23:07,505 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:23:07,505 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:23:07,505 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:23:07,505 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:23:07,505 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:23:07,505 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:23:07,506 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:23:07,506 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:23:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 01:23:07,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-24 01:23:07,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:23:07,559 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:23:07,561 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:23:07,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:23:07,568 INFO L82 PathProgramCache]: Analyzing trace with hash 980545676, now seen corresponding path program 1 times [2018-10-24 01:23:07,571 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:23:07,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:07,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:23:07,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:07,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:23:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:23:08,043 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:23:08,178 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 01:23:08,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:23:08,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:23:08,181 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:23:08,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:23:08,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:23:08,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:23:08,206 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 01:23:16,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:23:16,874 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-24 01:23:16,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:23:16,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-10-24 01:23:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:23:16,915 INFO L225 Difference]: With dead ends: 3097 [2018-10-24 01:23:16,915 INFO L226 Difference]: Without dead ends: 1975 [2018-10-24 01:23:16,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:23:16,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-24 01:23:17,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-24 01:23:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-24 01:23:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-24 01:23:17,092 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 56 [2018-10-24 01:23:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:23:17,093 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-24 01:23:17,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:23:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-24 01:23:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 01:23:17,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:23:17,102 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:23:17,102 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:23:17,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:23:17,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1287580412, now seen corresponding path program 1 times [2018-10-24 01:23:17,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:23:17,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:17,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:23:17,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:17,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:23:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:23:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:23:17,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:23:17,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:23:17,362 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:23:17,364 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:23:17,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:23:17,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:23:17,365 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-24 01:23:38,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:23:38,972 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-10-24 01:23:38,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:23:38,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-10-24 01:23:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:23:38,999 INFO L225 Difference]: With dead ends: 5736 [2018-10-24 01:23:39,000 INFO L226 Difference]: Without dead ends: 3768 [2018-10-24 01:23:39,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:23:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-10-24 01:23:39,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-10-24 01:23:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-10-24 01:23:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-10-24 01:23:39,116 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 132 [2018-10-24 01:23:39,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:23:39,117 INFO L481 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-10-24 01:23:39,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:23:39,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-10-24 01:23:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 01:23:39,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:23:39,123 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:23:39,124 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:23:39,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:23:39,124 INFO L82 PathProgramCache]: Analyzing trace with hash 800617696, now seen corresponding path program 1 times [2018-10-24 01:23:39,124 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:23:39,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:39,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:23:39,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:39,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:23:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:23:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:23:39,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:23:39,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:23:39,368 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:23:39,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:23:39,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:23:39,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:23:39,369 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-10-24 01:24:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:09,587 INFO L93 Difference]: Finished difference Result 13665 states and 21763 transitions. [2018-10-24 01:24:09,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:24:09,587 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-24 01:24:09,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:09,641 INFO L225 Difference]: With dead ends: 13665 [2018-10-24 01:24:09,641 INFO L226 Difference]: Without dead ends: 9985 [2018-10-24 01:24:09,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:24:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2018-10-24 01:24:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9795. [2018-10-24 01:24:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2018-10-24 01:24:09,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 14503 transitions. [2018-10-24 01:24:09,929 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 14503 transitions. Word has length 146 [2018-10-24 01:24:09,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:09,929 INFO L481 AbstractCegarLoop]: Abstraction has 9795 states and 14503 transitions. [2018-10-24 01:24:09,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:24:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 14503 transitions. [2018-10-24 01:24:09,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 01:24:09,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:09,936 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:24:09,936 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:09,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:09,937 INFO L82 PathProgramCache]: Analyzing trace with hash -2020564548, now seen corresponding path program 1 times [2018-10-24 01:24:09,937 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:09,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:09,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:09,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:09,938 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:10,286 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:24:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:24:10,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:10,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:24:10,419 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:10,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:24:10,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:24:10,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:24:10,420 INFO L87 Difference]: Start difference. First operand 9795 states and 14503 transitions. Second operand 6 states. [2018-10-24 01:24:25,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:25,299 INFO L93 Difference]: Finished difference Result 34188 states and 53785 transitions. [2018-10-24 01:24:25,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:24:25,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-24 01:24:25,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:25,418 INFO L225 Difference]: With dead ends: 34188 [2018-10-24 01:24:25,418 INFO L226 Difference]: Without dead ends: 24399 [2018-10-24 01:24:25,490 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 01:24:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24399 states. [2018-10-24 01:24:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24399 to 24166. [2018-10-24 01:24:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24166 states. [2018-10-24 01:24:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24166 states to 24166 states and 34062 transitions. [2018-10-24 01:24:26,100 INFO L78 Accepts]: Start accepts. Automaton has 24166 states and 34062 transitions. Word has length 164 [2018-10-24 01:24:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:26,101 INFO L481 AbstractCegarLoop]: Abstraction has 24166 states and 34062 transitions. [2018-10-24 01:24:26,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:24:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 24166 states and 34062 transitions. [2018-10-24 01:24:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 01:24:26,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:26,109 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:24:26,109 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:26,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash -744065737, now seen corresponding path program 1 times [2018-10-24 01:24:26,110 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:26,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:26,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:26,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:26,111 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:26,396 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:24:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:24:26,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:26,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:24:26,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:26,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:24:26,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:24:26,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:24:26,733 INFO L87 Difference]: Start difference. First operand 24166 states and 34062 transitions. Second operand 6 states. [2018-10-24 01:24:41,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:41,650 INFO L93 Difference]: Finished difference Result 62336 states and 97849 transitions. [2018-10-24 01:24:41,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:24:41,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-10-24 01:24:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:41,821 INFO L225 Difference]: With dead ends: 62336 [2018-10-24 01:24:41,822 INFO L226 Difference]: Without dead ends: 38176 [2018-10-24 01:24:41,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:24:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38176 states. [2018-10-24 01:24:42,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38176 to 37979. [2018-10-24 01:24:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37979 states. [2018-10-24 01:24:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37979 states to 37979 states and 54438 transitions. [2018-10-24 01:24:42,751 INFO L78 Accepts]: Start accepts. Automaton has 37979 states and 54438 transitions. Word has length 175 [2018-10-24 01:24:42,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:42,751 INFO L481 AbstractCegarLoop]: Abstraction has 37979 states and 54438 transitions. [2018-10-24 01:24:42,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:24:42,751 INFO L276 IsEmpty]: Start isEmpty. Operand 37979 states and 54438 transitions. [2018-10-24 01:24:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-24 01:24:42,758 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:42,758 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:24:42,758 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:42,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:42,759 INFO L82 PathProgramCache]: Analyzing trace with hash 787887912, now seen corresponding path program 1 times [2018-10-24 01:24:42,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:42,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:42,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:42,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:42,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:43,070 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:24:43,445 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:24:43,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:43,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:24:43,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:43,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:24:43,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:24:43,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:24:43,448 INFO L87 Difference]: Start difference. First operand 37979 states and 54438 transitions. Second operand 6 states. [2018-10-24 01:24:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:56,740 INFO L93 Difference]: Finished difference Result 83934 states and 123834 transitions. [2018-10-24 01:24:56,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:24:56,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-10-24 01:24:56,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:56,898 INFO L225 Difference]: With dead ends: 83934 [2018-10-24 01:24:56,899 INFO L226 Difference]: Without dead ends: 45961 [2018-10-24 01:24:56,986 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 01:24:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45961 states. [2018-10-24 01:24:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45961 to 45859. [2018-10-24 01:24:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45859 states. [2018-10-24 01:24:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45859 states to 45859 states and 62659 transitions. [2018-10-24 01:24:57,899 INFO L78 Accepts]: Start accepts. Automaton has 45859 states and 62659 transitions. Word has length 203 [2018-10-24 01:24:57,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:57,900 INFO L481 AbstractCegarLoop]: Abstraction has 45859 states and 62659 transitions. [2018-10-24 01:24:57,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:24:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 45859 states and 62659 transitions. [2018-10-24 01:24:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-10-24 01:24:57,920 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:57,922 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:57,922 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:57,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:57,923 INFO L82 PathProgramCache]: Analyzing trace with hash 334178010, now seen corresponding path program 1 times [2018-10-24 01:24:57,923 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:57,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:57,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:57,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:57,925 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:58,481 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 172 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:24:58,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:24:58,483 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:24:58,484 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-10-24 01:24:58,486 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2975], [2977], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 01:24:58,580 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:24:58,580 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:25:05,852 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:25:05,854 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 01:25:05,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:25:05,869 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:25:10,320 INFO L232 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 71.74% of their original sizes. [2018-10-24 01:25:10,321 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:25:11,860 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:25:11,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:25:11,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 01:25:11,862 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:25:11,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 01:25:11,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 01:25:11,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 01:25:11,863 INFO L87 Difference]: Start difference. First operand 45859 states and 62659 transitions. Second operand 11 states. [2018-10-24 01:25:47,610 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:26:32,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:26:32,367 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:26:32,371 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:26:32,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:26:32 BoogieIcfgContainer [2018-10-24 01:26:32,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:26:32,373 INFO L168 Benchmark]: Toolchain (without parser) took 218665.82 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 580.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:26:32,374 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:26:32,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2381.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:26:32,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 679.24 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.0 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:26:32,376 INFO L168 Benchmark]: Boogie Preprocessor took 296.07 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: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:26:32,377 INFO L168 Benchmark]: RCFGBuilder took 10341.44 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 191.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -13.8 MB). Peak memory consumption was 690.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:26:32,378 INFO L168 Benchmark]: TraceAbstraction took 204962.37 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 392.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:26:32,383 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2381.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 679.24 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.0 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 296.07 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: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10341.44 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 191.9 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -13.8 MB). Peak memory consumption was 690.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204962.37 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 392.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 159). Cancelled while BasicCegarLoop was constructing difference of abstraction (45859states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (2976 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 204.8s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 184.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2992 SDtfs, 23263 SDslu, 3175 SDs, 0 SdLazy, 34525 SolverSat, 8709 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 144.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 309 GetRequests, 257 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45859occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9963125763125763 AbsIntWeakeningRatio, 0.11904761904761904 AbsIntAvgWeakeningVarsNumRemoved, 28.97222222222222 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 805 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1129 NumberOfCodeBlocks, 1129 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1122 ConstructedInterpolants, 0 QuantifiedInterpolants, 684502 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 417/419 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown