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_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:30:18,682 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:30:18,684 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:30:18,701 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:30:18,701 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:30:18,702 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:30:18,704 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:30:18,707 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:30:18,709 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:30:18,715 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:30:18,716 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:30:18,716 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:30:18,721 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:30:18,725 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:30:18,726 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:30:18,727 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:30:18,730 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:30:18,732 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:30:18,738 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:30:18,740 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:30:18,743 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:30:18,744 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:30:18,748 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:30:18,759 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 01:30:18,785 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:30:18,785 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:30:18,786 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:30:18,786 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:30:18,787 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:30:18,788 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:30:18,788 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:30:18,788 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:30:18,788 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:30:18,789 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:30:18,789 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:30:18,789 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:30:18,790 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:30:18,791 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:30:18,791 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:30:18,791 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:30:18,791 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:30:18,791 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:30:18,793 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:30:18,793 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:30:18,794 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:30:18,794 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:30:18,794 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:30:18,794 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:30:18,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:30:18,795 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:30:18,795 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:30:18,795 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:30:18,796 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:30:18,796 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:30:18,796 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:30:18,796 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:30:18,796 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:30:18,797 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:30:18,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:30:18,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:30:18,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:30:18,891 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:30:18,892 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:30:18,893 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label52_true-unreach-call.c [2018-10-24 01:30:18,957 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5fa11682e/df9bcf08bc8f4cfc993ed5686ee9da1e/FLAGb76417292 [2018-10-24 01:30:19,799 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:30:19,800 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label52_true-unreach-call.c [2018-10-24 01:30:19,840 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5fa11682e/df9bcf08bc8f4cfc993ed5686ee9da1e/FLAGb76417292 [2018-10-24 01:30:19,861 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5fa11682e/df9bcf08bc8f4cfc993ed5686ee9da1e [2018-10-24 01:30:19,873 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:30:19,876 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:30:19,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:30:19,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:30:19,884 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:30:19,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:30:19" (1/1) ... [2018-10-24 01:30:19,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11dcb252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:19, skipping insertion in model container [2018-10-24 01:30:19,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:30:19" (1/1) ... [2018-10-24 01:30:19,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:30:20,096 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:30:21,635 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:30:21,640 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:30:22,393 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:30:22,431 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:30:22,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22 WrapperNode [2018-10-24 01:30:22,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:30:22,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:30:22,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:30:22,433 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:30:22,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (1/1) ... [2018-10-24 01:30:22,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (1/1) ... [2018-10-24 01:30:22,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:30:23,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:30:23,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:30:23,000 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:30:23,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (1/1) ... [2018-10-24 01:30:23,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (1/1) ... [2018-10-24 01:30:23,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (1/1) ... [2018-10-24 01:30:23,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (1/1) ... [2018-10-24 01:30:23,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (1/1) ... [2018-10-24 01:30:23,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (1/1) ... [2018-10-24 01:30:23,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (1/1) ... [2018-10-24 01:30:23,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:30:23,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:30:23,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:30:23,354 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:30:23,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (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 01:30:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:30:23,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:30:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:30:23,423 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:30:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:30:23,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:30:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:30:23,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:30:23,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:30:23,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:30:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:30:23,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:30:23,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:30:23,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:30:35,437 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:30:35,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:30:35 BoogieIcfgContainer [2018-10-24 01:30:35,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:30:35,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:30:35,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:30:35,442 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:30:35,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:30:19" (1/3) ... [2018-10-24 01:30:35,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab4a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:30:35, skipping insertion in model container [2018-10-24 01:30:35,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:30:22" (2/3) ... [2018-10-24 01:30:35,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab4a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:30:35, skipping insertion in model container [2018-10-24 01:30:35,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:30:35" (3/3) ... [2018-10-24 01:30:35,446 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label52_true-unreach-call.c [2018-10-24 01:30:35,456 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:30:35,465 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:30:35,482 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:30:35,528 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:30:35,529 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:30:35,529 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:30:35,529 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:30:35,529 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:30:35,529 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:30:35,529 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:30:35,530 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:30:35,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 01:30:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-24 01:30:35,593 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:30:35,594 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:30:35,597 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:30:35,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:30:35,605 INFO L82 PathProgramCache]: Analyzing trace with hash -774157709, now seen corresponding path program 1 times [2018-10-24 01:30:35,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:30:35,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:30:35,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:30:35,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:30:35,660 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:30:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:30:36,177 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:30:36,301 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 01:30:36,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:30:36,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:30:36,304 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:30:36,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:30:36,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:30:36,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:30:36,330 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 01:30:46,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:30:46,610 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-10-24 01:30:46,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:30:46,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-10-24 01:30:46,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:30:46,651 INFO L225 Difference]: With dead ends: 3093 [2018-10-24 01:30:46,651 INFO L226 Difference]: Without dead ends: 1971 [2018-10-24 01:30:46,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 01:30:46,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-10-24 01:30:46,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-10-24 01:30:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-10-24 01:30:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-10-24 01:30:46,830 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 71 [2018-10-24 01:30:46,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:30:46,831 INFO L481 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-10-24 01:30:46,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:30:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-10-24 01:30:46,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 01:30:46,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:30:46,848 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, 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] [2018-10-24 01:30:46,848 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:30:46,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:30:46,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1438454356, now seen corresponding path program 1 times [2018-10-24 01:30:46,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:30:46,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:30:46,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:30:46,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:30:46,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:30:46,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:30:47,182 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:30:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:30:47,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:30:47,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:30:47,410 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:30:47,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:30:47,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:30:47,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:30:47,413 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-10-24 01:31:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:31:07,660 INFO L93 Difference]: Finished difference Result 5630 states and 10205 transitions. [2018-10-24 01:31:07,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:31:07,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-24 01:31:07,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:31:07,689 INFO L225 Difference]: With dead ends: 5630 [2018-10-24 01:31:07,690 INFO L226 Difference]: Without dead ends: 3679 [2018-10-24 01:31:07,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:31:07,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3679 states. [2018-10-24 01:31:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3679 to 3636. [2018-10-24 01:31:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3636 states. [2018-10-24 01:31:07,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 5828 transitions. [2018-10-24 01:31:07,819 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 5828 transitions. Word has length 154 [2018-10-24 01:31:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:31:07,820 INFO L481 AbstractCegarLoop]: Abstraction has 3636 states and 5828 transitions. [2018-10-24 01:31:07,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:31:07,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 5828 transitions. [2018-10-24 01:31:07,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 01:31:07,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:31:07,830 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, 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] [2018-10-24 01:31:07,831 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:31:07,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:31:07,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1449223166, now seen corresponding path program 1 times [2018-10-24 01:31:07,833 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:31:07,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:07,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:31:07,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:07,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:31:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:31:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:31:08,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:31:08,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:31:08,105 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:31:08,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:31:08,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:31:08,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:31:08,106 INFO L87 Difference]: Start difference. First operand 3636 states and 5828 transitions. Second operand 5 states. [2018-10-24 01:31:31,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:31:31,434 INFO L93 Difference]: Finished difference Result 13464 states and 21920 transitions. [2018-10-24 01:31:31,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:31:31,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-10-24 01:31:31,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:31:31,486 INFO L225 Difference]: With dead ends: 13464 [2018-10-24 01:31:31,487 INFO L226 Difference]: Without dead ends: 9834 [2018-10-24 01:31:31,504 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 01:31:31,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9834 states. [2018-10-24 01:31:31,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9834 to 9639. [2018-10-24 01:31:31,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9639 states. [2018-10-24 01:31:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9639 states to 9639 states and 14661 transitions. [2018-10-24 01:31:31,747 INFO L78 Accepts]: Start accepts. Automaton has 9639 states and 14661 transitions. Word has length 161 [2018-10-24 01:31:31,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:31:31,748 INFO L481 AbstractCegarLoop]: Abstraction has 9639 states and 14661 transitions. [2018-10-24 01:31:31,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:31:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 9639 states and 14661 transitions. [2018-10-24 01:31:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 01:31:31,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:31:31,755 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, 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] [2018-10-24 01:31:31,755 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:31:31,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:31:31,755 INFO L82 PathProgramCache]: Analyzing trace with hash 2036148572, now seen corresponding path program 1 times [2018-10-24 01:31:31,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:31:31,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:31,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:31:31,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:31,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:31:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:31:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:31:31,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:31:31,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:31:31,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:31:31,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:31:31,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:31:31,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:31:31,947 INFO L87 Difference]: Start difference. First operand 9639 states and 14661 transitions. Second operand 5 states. [2018-10-24 01:31:45,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:31:45,518 INFO L93 Difference]: Finished difference Result 29017 states and 46093 transitions. [2018-10-24 01:31:45,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:31:45,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-10-24 01:31:45,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:31:45,601 INFO L225 Difference]: With dead ends: 29017 [2018-10-24 01:31:45,602 INFO L226 Difference]: Without dead ends: 19384 [2018-10-24 01:31:45,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:31:45,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19384 states. [2018-10-24 01:31:46,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19384 to 19049. [2018-10-24 01:31:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19049 states. [2018-10-24 01:31:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19049 states to 19049 states and 27578 transitions. [2018-10-24 01:31:46,083 INFO L78 Accepts]: Start accepts. Automaton has 19049 states and 27578 transitions. Word has length 170 [2018-10-24 01:31:46,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:31:46,084 INFO L481 AbstractCegarLoop]: Abstraction has 19049 states and 27578 transitions. [2018-10-24 01:31:46,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:31:46,084 INFO L276 IsEmpty]: Start isEmpty. Operand 19049 states and 27578 transitions. [2018-10-24 01:31:46,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 01:31:46,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:31:46,092 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, 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 01:31:46,092 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:31:46,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:31:46,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1111253638, now seen corresponding path program 1 times [2018-10-24 01:31:46,093 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:31:46,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:46,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:31:46,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:31:46,094 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:31:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:31:46,363 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:31:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:31:46,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:31:46,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:31:46,467 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:31:46,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:31:46,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:31:46,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:31:46,468 INFO L87 Difference]: Start difference. First operand 19049 states and 27578 transitions. Second operand 6 states. [2018-10-24 01:32:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:32:02,239 INFO L93 Difference]: Finished difference Result 58356 states and 91855 transitions. [2018-10-24 01:32:02,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:32:02,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-10-24 01:32:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:32:02,387 INFO L225 Difference]: With dead ends: 58356 [2018-10-24 01:32:02,387 INFO L226 Difference]: Without dead ends: 39313 [2018-10-24 01:32:02,467 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 01:32:02,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39313 states. [2018-10-24 01:32:03,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39313 to 39136. [2018-10-24 01:32:03,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39136 states. [2018-10-24 01:32:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39136 states to 39136 states and 54978 transitions. [2018-10-24 01:32:03,283 INFO L78 Accepts]: Start accepts. Automaton has 39136 states and 54978 transitions. Word has length 181 [2018-10-24 01:32:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:32:03,283 INFO L481 AbstractCegarLoop]: Abstraction has 39136 states and 54978 transitions. [2018-10-24 01:32:03,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:32:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 39136 states and 54978 transitions. [2018-10-24 01:32:03,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-24 01:32:03,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:32:03,295 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:32:03,295 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:32:03,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:03,296 INFO L82 PathProgramCache]: Analyzing trace with hash -747971991, now seen corresponding path program 1 times [2018-10-24 01:32:03,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:32:03,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:03,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:32:03,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:03,297 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:32:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:32:03,573 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:32:03,956 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:32:03,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:32:03,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:32:03,957 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:32:03,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:32:03,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:32:03,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:32:03,958 INFO L87 Difference]: Start difference. First operand 39136 states and 54978 transitions. Second operand 6 states. [2018-10-24 01:32:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:32:15,791 INFO L93 Difference]: Finished difference Result 98852 states and 157112 transitions. [2018-10-24 01:32:15,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:32:15,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-10-24 01:32:15,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:32:16,029 INFO L225 Difference]: With dead ends: 98852 [2018-10-24 01:32:16,029 INFO L226 Difference]: Without dead ends: 59722 [2018-10-24 01:32:16,123 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 01:32:16,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59722 states. [2018-10-24 01:32:17,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59722 to 59493. [2018-10-24 01:32:17,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59493 states. [2018-10-24 01:32:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59493 states to 59493 states and 85511 transitions. [2018-10-24 01:32:17,457 INFO L78 Accepts]: Start accepts. Automaton has 59493 states and 85511 transitions. Word has length 190 [2018-10-24 01:32:17,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:32:17,457 INFO L481 AbstractCegarLoop]: Abstraction has 59493 states and 85511 transitions. [2018-10-24 01:32:17,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:32:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand 59493 states and 85511 transitions. [2018-10-24 01:32:17,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-24 01:32:17,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:32:17,492 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:32:17,492 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:32:17,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1403677423, now seen corresponding path program 1 times [2018-10-24 01:32:17,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:32:17,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:17,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:32:17,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:17,495 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:32:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:32:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:32:17,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:32:17,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:32:17,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:32:17,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:32:17,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:32:17,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:32:17,845 INFO L87 Difference]: Start difference. First operand 59493 states and 85511 transitions. Second operand 6 states. [2018-10-24 01:32:30,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:32:30,649 INFO L93 Difference]: Finished difference Result 126178 states and 186033 transitions. [2018-10-24 01:32:30,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:32:30,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 265 [2018-10-24 01:32:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:32:30,892 INFO L225 Difference]: With dead ends: 126178 [2018-10-24 01:32:30,893 INFO L226 Difference]: Without dead ends: 66691 [2018-10-24 01:32:31,030 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 [2018-10-24 01:32:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66691 states. [2018-10-24 01:32:32,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66691 to 66564. [2018-10-24 01:32:32,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66564 states. [2018-10-24 01:32:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66564 states to 66564 states and 90178 transitions. [2018-10-24 01:32:32,646 INFO L78 Accepts]: Start accepts. Automaton has 66564 states and 90178 transitions. Word has length 265 [2018-10-24 01:32:32,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:32:32,647 INFO L481 AbstractCegarLoop]: Abstraction has 66564 states and 90178 transitions. [2018-10-24 01:32:32,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:32:32,647 INFO L276 IsEmpty]: Start isEmpty. Operand 66564 states and 90178 transitions. [2018-10-24 01:32:32,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-24 01:32:32,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:32:32,675 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:32:32,676 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:32:32,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:32:32,676 INFO L82 PathProgramCache]: Analyzing trace with hash -2001119171, now seen corresponding path program 1 times [2018-10-24 01:32:32,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:32:32,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:32,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:32:32,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:32:32,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:32:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:32:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:32:33,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:32:33,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:32:33,083 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:32:33,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:32:33,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:32:33,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:32:33,084 INFO L87 Difference]: Start difference. First operand 66564 states and 90178 transitions. Second operand 5 states. [2018-10-24 01:32:59,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:32:59,669 INFO L93 Difference]: Finished difference Result 169022 states and 239956 transitions. [2018-10-24 01:32:59,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:32:59,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2018-10-24 01:32:59,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:33:00,033 INFO L225 Difference]: With dead ends: 169022 [2018-10-24 01:33:00,033 INFO L226 Difference]: Without dead ends: 102464 [2018-10-24 01:33:00,165 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 01:33:00,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102464 states. [2018-10-24 01:33:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102464 to 102264. [2018-10-24 01:33:01,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102264 states. [2018-10-24 01:33:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102264 states to 102264 states and 144102 transitions. [2018-10-24 01:33:01,786 INFO L78 Accepts]: Start accepts. Automaton has 102264 states and 144102 transitions. Word has length 271 [2018-10-24 01:33:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:33:01,787 INFO L481 AbstractCegarLoop]: Abstraction has 102264 states and 144102 transitions. [2018-10-24 01:33:01,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:33:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 102264 states and 144102 transitions. [2018-10-24 01:33:01,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-24 01:33:01,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:33:01,812 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:33:01,812 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:33:01,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:33:01,812 INFO L82 PathProgramCache]: Analyzing trace with hash -227591905, now seen corresponding path program 1 times [2018-10-24 01:33:01,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:33:01,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:33:01,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:33:01,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:33:01,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:33:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:33:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 205 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:33:02,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:33:02,299 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:33:02,300 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 283 with the following transitions: [2018-10-24 01:33:02,302 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], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3091], [3095], [3097], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3221], [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], [3363], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 01:33:02,384 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:33:02,384 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:33:09,911 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:33:09,912 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 01:33:09,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:33:09,922 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:33:15,787 INFO L232 lantSequenceWeakener]: Weakened 259 states. On average, predicates are now at 71.88% of their original sizes. [2018-10-24 01:33:15,787 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:33:17,651 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:33:17,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:33:17,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2018-10-24 01:33:17,652 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:33:17,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 01:33:17,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 01:33:17,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 01:33:17,654 INFO L87 Difference]: Start difference. First operand 102264 states and 144102 transitions. Second operand 11 states. [2018-10-24 01:33:37,918 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:34:02,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:34:02,125 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:34:02,130 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:34:02,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:34:02 BoogieIcfgContainer [2018-10-24 01:34:02,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:34:02,132 INFO L168 Benchmark]: Toolchain (without parser) took 222257.69 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 01:34:02,133 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:34:02,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2554.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:34:02,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 566.59 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 830.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:34:02,135 INFO L168 Benchmark]: Boogie Preprocessor took 353.61 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:34:02,136 INFO L168 Benchmark]: RCFGBuilder took 12084.55 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 173.0 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.2 MB). Peak memory consumption was 647.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:34:02,137 INFO L168 Benchmark]: TraceAbstraction took 206691.99 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -734.3 MB). Peak memory consumption was 892.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:34:02,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2554.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 566.59 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 830.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 353.61 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12084.55 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 173.0 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.2 MB). Peak memory consumption was 647.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206691.99 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -734.3 MB). Peak memory consumption was 892.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 204]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 204). Cancelled while BasicCegarLoop was constructing difference of abstraction (102264states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (538 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 206.6s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 180.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3309 SDtfs, 31976 SDslu, 3967 SDs, 0 SdLazy, 48408 SolverSat, 11637 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 144.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 358 GetRequests, 292 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102264occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9966931289351215 AbsIntWeakeningRatio, 0.10676156583629894 AbsIntAvgWeakeningVarsNumRemoved, 21.871886120996443 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 1320 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1745 NumberOfCodeBlocks, 1745 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1736 ConstructedInterpolants, 0 QuantifiedInterpolants, 1800909 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 653/666 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown