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/Problem10_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:09:23,656 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:09:23,658 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:09:23,672 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:09:23,672 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:09:23,673 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:09:23,675 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:09:23,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:09:23,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:09:23,679 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:09:23,680 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:09:23,680 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:09:23,681 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:09:23,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:09:23,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:09:23,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:09:23,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:09:23,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:09:23,689 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:09:23,696 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:09:23,699 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:09:23,701 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:09:23,705 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:09:23,706 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:09:23,706 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:09:23,710 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:09:23,711 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:09:23,714 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:09:23,715 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:09:23,716 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:09:23,716 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:09:23,716 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:09:23,717 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:09:23,719 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:09:23,720 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:09:23,720 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:09:23,721 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 18:09:23,740 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:09:23,740 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:09:23,741 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:09:23,741 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:09:23,741 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:09:23,741 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:09:23,742 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:09:23,742 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:09:23,742 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:09:23,743 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:09:23,743 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:09:23,743 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:09:23,744 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:09:23,744 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:09:23,744 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:09:23,745 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:09:23,745 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:09:23,745 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:09:23,745 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:09:23,745 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:09:23,746 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:09:23,746 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:09:23,747 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:09:23,747 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:09:23,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:09:23,747 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:09:23,748 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:09:23,748 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:09:23,748 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:09:23,748 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:09:23,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:09:23,748 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:09:23,749 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:09:23,749 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:09:23,815 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:09:23,828 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:09:23,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:09:23,833 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:09:23,833 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:09:23,834 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label58_false-unreach-call.c [2018-10-24 18:09:23,891 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f9973dcff/7807cd62abef45a9bd2e8a818225977d/FLAG969ec1f66 [2018-10-24 18:09:24,442 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:09:24,443 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label58_false-unreach-call.c [2018-10-24 18:09:24,455 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f9973dcff/7807cd62abef45a9bd2e8a818225977d/FLAG969ec1f66 [2018-10-24 18:09:24,475 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f9973dcff/7807cd62abef45a9bd2e8a818225977d [2018-10-24 18:09:24,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:09:24,489 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:09:24,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:24,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:09:24,498 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:09:24,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:24,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3880cdf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:24, skipping insertion in model container [2018-10-24 18:09:24,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:24" (1/1) ... [2018-10-24 18:09:24,514 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:09:24,595 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:09:25,093 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:25,098 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:09:25,220 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:25,239 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:09:25,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25 WrapperNode [2018-10-24 18:09:25,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:25,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:25,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:09:25,242 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:09:25,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (1/1) ... [2018-10-24 18:09:25,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (1/1) ... [2018-10-24 18:09:25,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:25,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:09:25,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:09:25,349 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:09:25,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (1/1) ... [2018-10-24 18:09:25,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (1/1) ... [2018-10-24 18:09:25,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (1/1) ... [2018-10-24 18:09:25,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (1/1) ... [2018-10-24 18:09:25,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (1/1) ... [2018-10-24 18:09:25,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (1/1) ... [2018-10-24 18:09:25,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (1/1) ... [2018-10-24 18:09:25,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:09:25,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:09:25,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:09:25,594 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:09:25,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (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 18:09:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:09:25,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:09:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:09:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:09:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:09:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:09:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:09:25,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:09:29,082 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:09:29,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:29 BoogieIcfgContainer [2018-10-24 18:09:29,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:09:29,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:09:29,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:09:29,088 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:09:29,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:09:24" (1/3) ... [2018-10-24 18:09:29,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c68c1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:29, skipping insertion in model container [2018-10-24 18:09:29,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:25" (2/3) ... [2018-10-24 18:09:29,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c68c1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:29, skipping insertion in model container [2018-10-24 18:09:29,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:29" (3/3) ... [2018-10-24 18:09:29,101 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label58_false-unreach-call.c [2018-10-24 18:09:29,110 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:09:29,118 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:09:29,135 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:09:29,174 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:09:29,175 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:09:29,175 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:09:29,175 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:09:29,175 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:09:29,176 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:09:29,176 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:09:29,176 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:09:29,202 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 18:09:29,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-24 18:09:29,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:29,211 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] [2018-10-24 18:09:29,214 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:29,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:29,220 INFO L82 PathProgramCache]: Analyzing trace with hash -527630724, now seen corresponding path program 1 times [2018-10-24 18:09:29,222 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:29,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:29,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:29,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:29,273 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:29,669 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 18:09:29,675 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 18:09:29,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:29,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:09:29,678 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:29,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:09:29,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:09:29,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:09:29,704 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-24 18:09:32,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:32,419 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-24 18:09:32,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:09:32,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-24 18:09:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:32,444 INFO L225 Difference]: With dead ends: 737 [2018-10-24 18:09:32,445 INFO L226 Difference]: Without dead ends: 515 [2018-10-24 18:09:32,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:09:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-24 18:09:32,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-10-24 18:09:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-10-24 18:09:32,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 848 transitions. [2018-10-24 18:09:32,546 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 848 transitions. Word has length 20 [2018-10-24 18:09:32,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:32,547 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 848 transitions. [2018-10-24 18:09:32,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:09:32,548 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 848 transitions. [2018-10-24 18:09:32,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 18:09:32,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:32,553 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:32,554 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:32,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:32,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1079251133, now seen corresponding path program 1 times [2018-10-24 18:09:32,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:32,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:32,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:32,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:32,557 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:32,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:32,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:32,953 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:32,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:32,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:32,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:32,956 INFO L87 Difference]: Start difference. First operand 515 states and 848 transitions. Second operand 6 states. [2018-10-24 18:09:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:35,783 INFO L93 Difference]: Finished difference Result 1863 states and 3251 transitions. [2018-10-24 18:09:35,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:35,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-24 18:09:35,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:35,798 INFO L225 Difference]: With dead ends: 1863 [2018-10-24 18:09:35,798 INFO L226 Difference]: Without dead ends: 1354 [2018-10-24 18:09:35,806 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 18:09:35,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2018-10-24 18:09:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1331. [2018-10-24 18:09:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-10-24 18:09:35,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2051 transitions. [2018-10-24 18:09:35,911 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2051 transitions. Word has length 95 [2018-10-24 18:09:35,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:35,911 INFO L481 AbstractCegarLoop]: Abstraction has 1331 states and 2051 transitions. [2018-10-24 18:09:35,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2051 transitions. [2018-10-24 18:09:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-24 18:09:35,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:35,916 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:35,916 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:35,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:35,917 INFO L82 PathProgramCache]: Analyzing trace with hash 861016671, now seen corresponding path program 1 times [2018-10-24 18:09:35,917 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:35,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:35,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:35,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:35,919 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:36,183 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:36,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:36,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:36,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:36,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:36,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:36,185 INFO L87 Difference]: Start difference. First operand 1331 states and 2051 transitions. Second operand 6 states. [2018-10-24 18:09:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:40,424 INFO L93 Difference]: Finished difference Result 3512 states and 5693 transitions. [2018-10-24 18:09:40,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:40,425 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2018-10-24 18:09:40,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:40,443 INFO L225 Difference]: With dead ends: 3512 [2018-10-24 18:09:40,443 INFO L226 Difference]: Without dead ends: 2187 [2018-10-24 18:09:40,457 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 18:09:40,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2018-10-24 18:09:40,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 2165. [2018-10-24 18:09:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2165 states. [2018-10-24 18:09:40,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 3178 transitions. [2018-10-24 18:09:40,533 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 3178 transitions. Word has length 97 [2018-10-24 18:09:40,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:40,534 INFO L481 AbstractCegarLoop]: Abstraction has 2165 states and 3178 transitions. [2018-10-24 18:09:40,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:40,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 3178 transitions. [2018-10-24 18:09:40,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 18:09:40,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:40,537 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:40,537 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:40,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:40,538 INFO L82 PathProgramCache]: Analyzing trace with hash 300203728, now seen corresponding path program 1 times [2018-10-24 18:09:40,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:40,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:40,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:40,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:40,539 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:40,693 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:40,693 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:09:40,693 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:40,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:09:40,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:09:40,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:09:40,695 INFO L87 Difference]: Start difference. First operand 2165 states and 3178 transitions. Second operand 4 states. [2018-10-24 18:09:42,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:42,028 INFO L93 Difference]: Finished difference Result 4762 states and 7142 transitions. [2018-10-24 18:09:42,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:09:42,030 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-10-24 18:09:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:42,045 INFO L225 Difference]: With dead ends: 4762 [2018-10-24 18:09:42,046 INFO L226 Difference]: Without dead ends: 2603 [2018-10-24 18:09:42,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:09:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2018-10-24 18:09:42,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2601. [2018-10-24 18:09:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2601 states. [2018-10-24 18:09:42,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3587 transitions. [2018-10-24 18:09:42,135 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3587 transitions. Word has length 100 [2018-10-24 18:09:42,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:42,135 INFO L481 AbstractCegarLoop]: Abstraction has 2601 states and 3587 transitions. [2018-10-24 18:09:42,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:09:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3587 transitions. [2018-10-24 18:09:42,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-24 18:09:42,139 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:42,139 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:42,140 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:42,140 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:42,140 INFO L82 PathProgramCache]: Analyzing trace with hash 789375408, now seen corresponding path program 1 times [2018-10-24 18:09:42,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:42,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:42,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:42,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:42,142 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:42,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:42,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:42,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:42,334 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:42,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:42,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:42,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:42,336 INFO L87 Difference]: Start difference. First operand 2601 states and 3587 transitions. Second operand 6 states. [2018-10-24 18:09:44,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:44,559 INFO L93 Difference]: Finished difference Result 6030 states and 8674 transitions. [2018-10-24 18:09:44,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:44,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-24 18:09:44,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:44,580 INFO L225 Difference]: With dead ends: 6030 [2018-10-24 18:09:44,581 INFO L226 Difference]: Without dead ends: 3435 [2018-10-24 18:09:44,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:09:44,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2018-10-24 18:09:44,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3363. [2018-10-24 18:09:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3363 states. [2018-10-24 18:09:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4459 transitions. [2018-10-24 18:09:44,695 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4459 transitions. Word has length 116 [2018-10-24 18:09:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:44,695 INFO L481 AbstractCegarLoop]: Abstraction has 3363 states and 4459 transitions. [2018-10-24 18:09:44,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4459 transitions. [2018-10-24 18:09:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-24 18:09:44,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:44,703 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:44,703 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:44,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:44,704 INFO L82 PathProgramCache]: Analyzing trace with hash 44889932, now seen corresponding path program 1 times [2018-10-24 18:09:44,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:44,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:44,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:44,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:44,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:44,969 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:45,036 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-24 18:09:45,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:09:45,036 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:09:45,038 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-24 18:09:45,040 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [570], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:09:45,104 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:09:45,104 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:09:47,610 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:09:48,139 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:09:48,141 INFO L272 AbstractInterpreter]: Visited 94 different actions 94 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:09:48,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:48,169 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:09:50,932 INFO L232 lantSequenceWeakener]: Weakened 169 states. On average, predicates are now at 73.08% of their original sizes. [2018-10-24 18:09:50,936 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:09:55,349 INFO L413 sIntCurrentIteration]: We have 189 unified AI predicates [2018-10-24 18:09:55,350 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:09:55,351 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:09:55,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-10-24 18:09:55,351 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:55,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:09:55,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:09:55,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:09:55,352 INFO L87 Difference]: Start difference. First operand 3363 states and 4459 transitions. Second operand 10 states. [2018-10-24 18:10:42,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:10:42,588 INFO L93 Difference]: Finished difference Result 6869 states and 9128 transitions. [2018-10-24 18:10:42,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:10:42,588 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 190 [2018-10-24 18:10:42,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:10:42,606 INFO L225 Difference]: With dead ends: 6869 [2018-10-24 18:10:42,606 INFO L226 Difference]: Without dead ends: 3512 [2018-10-24 18:10:42,617 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 193 GetRequests, 153 SyntacticMatches, 28 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-24 18:10:42,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3512 states. [2018-10-24 18:10:42,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3512 to 3507. [2018-10-24 18:10:42,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3507 states. [2018-10-24 18:10:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4612 transitions. [2018-10-24 18:10:42,744 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4612 transitions. Word has length 190 [2018-10-24 18:10:42,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:10:42,744 INFO L481 AbstractCegarLoop]: Abstraction has 3507 states and 4612 transitions. [2018-10-24 18:10:42,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 18:10:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4612 transitions. [2018-10-24 18:10:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-24 18:10:42,751 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:10:42,752 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:10:42,752 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:10:42,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:42,753 INFO L82 PathProgramCache]: Analyzing trace with hash -239609168, now seen corresponding path program 1 times [2018-10-24 18:10:42,753 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:10:42,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:42,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:10:42,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:42,754 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:10:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:10:43,075 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:10:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 18:10:43,859 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:10:43,859 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:10:43,859 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-10-24 18:10:43,860 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [61], [63], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [702], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:10:43,867 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:10:43,868 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:10:44,791 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:11:04,572 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:11:04,572 INFO L272 AbstractInterpreter]: Visited 130 different actions 750 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:11:04,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:11:04,582 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:11:06,927 INFO L232 lantSequenceWeakener]: Weakened 45 states. On average, predicates are now at 74.11% of their original sizes. [2018-10-24 18:11:06,927 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:11:31,395 INFO L413 sIntCurrentIteration]: We have 221 unified AI predicates [2018-10-24 18:11:31,395 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:11:31,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:11:31,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [8] total 29 [2018-10-24 18:11:31,396 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:11:31,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 18:11:31,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 18:11:31,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-10-24 18:11:31,397 INFO L87 Difference]: Start difference. First operand 3507 states and 4612 transitions. Second operand 23 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown