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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label51_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:30:00,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:30:00,052 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:30:00,071 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:30:00,072 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:30:00,074 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:30:00,077 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:30:00,080 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:30:00,082 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:30:00,082 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:30:00,083 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:30:00,084 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:30:00,085 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:30:00,086 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:30:00,087 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:30:00,088 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:30:00,088 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:30:00,090 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:30:00,095 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:30:00,097 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:30:00,098 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:30:00,100 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:30:00,102 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 23:30:00,103 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 23:30:00,103 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 23:30:00,104 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 23:30:00,105 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 23:30:00,105 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 23:30:00,106 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 23:30:00,107 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 23:30:00,107 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 23:30:00,108 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 23:30:00,110 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:30:00,126 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:30:00,126 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:30:00,127 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:30:00,127 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:30:00,127 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:30:00,128 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:30:00,128 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:30:00,128 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:30:00,128 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:30:00,128 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:30:00,129 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:30:00,129 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:30:00,129 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:30:00,129 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:30:00,130 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:30:00,130 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:30:00,130 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:30:00,131 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:30:00,131 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:30:00,131 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:30:00,131 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:30:00,131 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:30:00,132 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:30:00,132 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:30:00,132 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:30:00,132 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:30:00,132 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:30:00,132 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:30:00,133 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:30:00,133 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:30:00,133 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:30:00,133 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:30:00,133 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:30:00,134 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:30:00,134 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:30:00,134 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:30:00,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:30:00,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:30:00,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:30:00,200 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:30:00,200 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:30:00,202 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label51_false-unreach-call.c [2018-10-24 23:30:00,264 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/033bc509a/191f51e564c54d8b8376192ddfca85ae/FLAG198cf0d24 [2018-10-24 23:30:00,854 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:30:00,855 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label51_false-unreach-call.c [2018-10-24 23:30:00,872 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/033bc509a/191f51e564c54d8b8376192ddfca85ae/FLAG198cf0d24 [2018-10-24 23:30:00,891 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/033bc509a/191f51e564c54d8b8376192ddfca85ae [2018-10-24 23:30:00,903 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:30:00,905 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:30:00,906 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:30:00,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:30:00,911 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:30:00,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:30:00" (1/1) ... [2018-10-24 23:30:00,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400d873a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:00, skipping insertion in model container [2018-10-24 23:30:00,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:30:00" (1/1) ... [2018-10-24 23:30:00,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:30:00,996 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:30:01,693 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:30:01,698 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:30:01,870 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:30:01,892 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:30:01,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01 WrapperNode [2018-10-24 23:30:01,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:30:01,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:30:01,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:30:01,894 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:30:01,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (1/1) ... [2018-10-24 23:30:01,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (1/1) ... [2018-10-24 23:30:02,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:30:02,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:30:02,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:30:02,186 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:30:02,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (1/1) ... [2018-10-24 23:30:02,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (1/1) ... [2018-10-24 23:30:02,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (1/1) ... [2018-10-24 23:30:02,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (1/1) ... [2018-10-24 23:30:02,276 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (1/1) ... [2018-10-24 23:30:02,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (1/1) ... [2018-10-24 23:30:02,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (1/1) ... [2018-10-24 23:30:02,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:30:02,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:30:02,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:30:02,334 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:30:02,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (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 23:30:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:30:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:30:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:30:02,407 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:30:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:30:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:30:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:30:02,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:30:06,558 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:30:06,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:30:06 BoogieIcfgContainer [2018-10-24 23:30:06,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:30:06,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:30:06,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:30:06,564 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:30:06,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:30:00" (1/3) ... [2018-10-24 23:30:06,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64de6e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:30:06, skipping insertion in model container [2018-10-24 23:30:06,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:30:01" (2/3) ... [2018-10-24 23:30:06,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64de6e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:30:06, skipping insertion in model container [2018-10-24 23:30:06,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:30:06" (3/3) ... [2018-10-24 23:30:06,569 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label51_false-unreach-call.c [2018-10-24 23:30:06,580 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:30:06,593 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:30:06,614 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:30:06,667 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:30:06,667 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:30:06,668 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:30:06,668 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:30:06,668 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:30:06,668 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:30:06,668 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:30:06,668 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:30:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 23:30:06,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 23:30:06,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:06,732 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:30:06,735 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:06,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:06,744 INFO L82 PathProgramCache]: Analyzing trace with hash 697929684, now seen corresponding path program 1 times [2018-10-24 23:30:06,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:06,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:06,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:06,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:06,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:07,109 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 23:30:07,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:30:07,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:30:07,112 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:30:07,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:30:07,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:30:07,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:30:07,138 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 23:30:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:11,067 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-10-24 23:30:11,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:30:11,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-24 23:30:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:11,091 INFO L225 Difference]: With dead ends: 979 [2018-10-24 23:30:11,092 INFO L226 Difference]: Without dead ends: 680 [2018-10-24 23:30:11,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:30:11,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-10-24 23:30:11,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-10-24 23:30:11,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-10-24 23:30:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-10-24 23:30:11,188 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 18 [2018-10-24 23:30:11,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:11,189 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-10-24 23:30:11,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:30:11,189 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-10-24 23:30:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 23:30:11,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:11,194 INFO L375 BasicCegarLoop]: trace histogram [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 23:30:11,194 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:11,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:11,195 INFO L82 PathProgramCache]: Analyzing trace with hash 796033475, now seen corresponding path program 1 times [2018-10-24 23:30:11,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:11,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:11,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:11,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:11,197 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:11,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:30:11,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:30:11,535 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:30:11,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:30:11,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:30:11,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:30:11,538 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-10-24 23:30:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:15,677 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-10-24 23:30:15,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:30:15,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-10-24 23:30:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:15,694 INFO L225 Difference]: With dead ends: 1555 [2018-10-24 23:30:15,695 INFO L226 Difference]: Without dead ends: 1077 [2018-10-24 23:30:15,698 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 23:30:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-10-24 23:30:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-10-24 23:30:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-24 23:30:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-10-24 23:30:15,773 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 91 [2018-10-24 23:30:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:15,774 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-10-24 23:30:15,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:30:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-10-24 23:30:15,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 23:30:15,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:15,777 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 23:30:15,778 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:15,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:15,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1422670888, now seen corresponding path program 1 times [2018-10-24 23:30:15,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:15,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:15,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:15,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:15,780 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:15,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:30:15,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:30:15,977 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:30:15,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:30:15,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:30:15,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:30:15,978 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-10-24 23:30:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:18,845 INFO L93 Difference]: Finished difference Result 2906 states and 4462 transitions. [2018-10-24 23:30:18,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:30:18,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2018-10-24 23:30:18,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:18,860 INFO L225 Difference]: With dead ends: 2906 [2018-10-24 23:30:18,860 INFO L226 Difference]: Without dead ends: 1849 [2018-10-24 23:30:18,867 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 23:30:18,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2018-10-24 23:30:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1647. [2018-10-24 23:30:18,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1647 states. [2018-10-24 23:30:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1647 states to 1647 states and 2425 transitions. [2018-10-24 23:30:18,923 INFO L78 Accepts]: Start accepts. Automaton has 1647 states and 2425 transitions. Word has length 92 [2018-10-24 23:30:18,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:18,924 INFO L481 AbstractCegarLoop]: Abstraction has 1647 states and 2425 transitions. [2018-10-24 23:30:18,924 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:30:18,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1647 states and 2425 transitions. [2018-10-24 23:30:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 23:30:18,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:18,927 INFO L375 BasicCegarLoop]: trace histogram [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 23:30:18,927 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:18,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:18,928 INFO L82 PathProgramCache]: Analyzing trace with hash 769801183, now seen corresponding path program 1 times [2018-10-24 23:30:18,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:18,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:18,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:18,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:18,929 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:19,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:30:19,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 23:30:19,302 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:30:19,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 23:30:19,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 23:30:19,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:30:19,303 INFO L87 Difference]: Start difference. First operand 1647 states and 2425 transitions. Second operand 7 states. [2018-10-24 23:30:24,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:24,862 INFO L93 Difference]: Finished difference Result 4753 states and 7319 transitions. [2018-10-24 23:30:24,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 23:30:24,863 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2018-10-24 23:30:24,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:24,884 INFO L225 Difference]: With dead ends: 4753 [2018-10-24 23:30:24,884 INFO L226 Difference]: Without dead ends: 2917 [2018-10-24 23:30:24,899 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 23:30:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2018-10-24 23:30:24,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2760. [2018-10-24 23:30:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2760 states. [2018-10-24 23:30:24,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 3964 transitions. [2018-10-24 23:30:24,997 INFO L78 Accepts]: Start accepts. Automaton has 2760 states and 3964 transitions. Word has length 93 [2018-10-24 23:30:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:24,998 INFO L481 AbstractCegarLoop]: Abstraction has 2760 states and 3964 transitions. [2018-10-24 23:30:24,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 23:30:24,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2760 states and 3964 transitions. [2018-10-24 23:30:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-24 23:30:25,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:25,005 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:30:25,005 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:25,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:25,005 INFO L82 PathProgramCache]: Analyzing trace with hash 603688054, now seen corresponding path program 1 times [2018-10-24 23:30:25,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:25,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:25,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:25,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:25,007 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:25,493 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 23:30:25,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:25,493 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:30:25,494 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-24 23:30:25,497 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [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], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:30:25,552 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:30:25,553 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:30:28,886 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:30:28,888 INFO L272 AbstractInterpreter]: Visited 126 different actions 374 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-24 23:30:28,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:28,932 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:30:28,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:28,932 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:30:28,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:28,959 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:30:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:29,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:30:31,379 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_~a23~0_478 Int)) (let ((.cse0 (mod (+ (div v_~a23~0_478 5) 1) 90))) (and (not (= (mod v_~a23~0_478 5) 0)) (< v_~a23~0_478 0) (<= c_~a23~0 (+ .cse0 49)) (= 0 .cse0) (<= |c_old(~a23~0)| v_~a23~0_478)))) (exists ((v_prenex_5 Int)) (let ((.cse1 (mod (div v_prenex_5 5) 90))) (and (<= 0 v_prenex_5) (= .cse1 0) (<= |c_old(~a23~0)| v_prenex_5) (<= c_~a23~0 (+ .cse1 49))))) (exists ((v_prenex_4 Int)) (let ((.cse3 (div v_prenex_4 5))) (let ((.cse2 (mod .cse3 90))) (and (not (= .cse2 0)) (= (mod v_prenex_4 5) 0) (<= (+ c_~a23~0 41) .cse2) (< .cse3 0) (<= |c_old(~a23~0)| v_prenex_4))))) (exists ((v_prenex_7 Int)) (let ((.cse5 (+ (div v_prenex_7 5) 1))) (let ((.cse4 (mod .cse5 90))) (and (< v_prenex_7 0) (not (= 0 .cse4)) (< .cse5 0) (<= |c_old(~a23~0)| v_prenex_7) (not (= (mod v_prenex_7 5) 0)) (<= (+ c_~a23~0 41) .cse4))))) (exists ((v_prenex_3 Int)) (let ((.cse6 (div v_prenex_3 5))) (and (<= c_~a23~0 (+ (mod .cse6 90) 49)) (= (mod v_prenex_3 5) 0) (<= 0 .cse6) (<= |c_old(~a23~0)| v_prenex_3)))) (exists ((v_prenex_1 Int)) (let ((.cse8 (div v_prenex_1 5))) (let ((.cse7 (mod .cse8 90))) (and (<= (+ c_~a23~0 41) .cse7) (< .cse8 0) (<= 0 v_prenex_1) (not (= .cse7 0)) (<= |c_old(~a23~0)| v_prenex_1))))) (exists ((v_prenex_2 Int)) (let ((.cse9 (div v_prenex_2 5))) (and (<= |c_old(~a23~0)| v_prenex_2) (<= 0 .cse9) (<= c_~a23~0 (+ (mod .cse9 90) 49)) (<= 0 v_prenex_2)))) (exists ((v_prenex_8 Int)) (let ((.cse10 (mod (div v_prenex_8 5) 90))) (and (<= |c_old(~a23~0)| v_prenex_8) (<= c_~a23~0 (+ .cse10 49)) (= .cse10 0) (= (mod v_prenex_8 5) 0)))) (exists ((v_prenex_6 Int)) (let ((.cse11 (+ (div v_prenex_6 5) 1))) (and (<= c_~a23~0 (+ (mod .cse11 90) 49)) (not (= (mod v_prenex_6 5) 0)) (< v_prenex_6 0) (<= |c_old(~a23~0)| v_prenex_6) (<= 0 .cse11))))) is different from true [2018-10-24 23:30:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 72 trivial. 2 not checked. [2018-10-24 23:30:31,629 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:30:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 23:30:32,084 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 23:30:32,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 8 [2018-10-24 23:30:32,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:30:32,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:30:32,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:30:32,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-10-24 23:30:32,087 INFO L87 Difference]: Start difference. First operand 2760 states and 3964 transitions. Second operand 3 states. [2018-10-24 23:30:34,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:34,678 INFO L93 Difference]: Finished difference Result 7028 states and 10690 transitions. [2018-10-24 23:30:34,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:30:34,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-10-24 23:30:34,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:34,704 INFO L225 Difference]: With dead ends: 7028 [2018-10-24 23:30:34,704 INFO L226 Difference]: Without dead ends: 4274 [2018-10-24 23:30:34,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 419 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2018-10-24 23:30:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2018-10-24 23:30:34,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4141. [2018-10-24 23:30:34,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4141 states. [2018-10-24 23:30:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 6024 transitions. [2018-10-24 23:30:34,834 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 6024 transitions. Word has length 210 [2018-10-24 23:30:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:34,835 INFO L481 AbstractCegarLoop]: Abstraction has 4141 states and 6024 transitions. [2018-10-24 23:30:34,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:30:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 6024 transitions. [2018-10-24 23:30:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-24 23:30:34,843 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:34,843 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 23:30:34,843 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:34,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:34,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2006407324, now seen corresponding path program 1 times [2018-10-24 23:30:34,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:34,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:34,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:34,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:34,846 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-24 23:30:35,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:30:35,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:30:35,075 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:30:35,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:30:35,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:30:35,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:30:35,076 INFO L87 Difference]: Start difference. First operand 4141 states and 6024 transitions. Second operand 3 states. [2018-10-24 23:30:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:38,208 INFO L93 Difference]: Finished difference Result 11742 states and 17980 transitions. [2018-10-24 23:30:38,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:30:38,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2018-10-24 23:30:38,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:30:38,250 INFO L225 Difference]: With dead ends: 11742 [2018-10-24 23:30:38,251 INFO L226 Difference]: Without dead ends: 7607 [2018-10-24 23:30:38,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:30:38,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7607 states. [2018-10-24 23:30:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7607 to 7411. [2018-10-24 23:30:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7411 states. [2018-10-24 23:30:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 10748 transitions. [2018-10-24 23:30:38,492 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 10748 transitions. Word has length 241 [2018-10-24 23:30:38,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:30:38,492 INFO L481 AbstractCegarLoop]: Abstraction has 7411 states and 10748 transitions. [2018-10-24 23:30:38,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:30:38,493 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 10748 transitions. [2018-10-24 23:30:38,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-10-24 23:30:38,505 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:30:38,505 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 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 23:30:38,506 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:30:38,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:38,506 INFO L82 PathProgramCache]: Analyzing trace with hash 169630205, now seen corresponding path program 1 times [2018-10-24 23:30:38,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:30:38,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:38,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:38,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:30:38,508 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:30:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-10-24 23:30:39,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:39,143 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:30:39,143 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-10-24 23:30:39,144 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [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], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [649], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:30:39,150 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:30:39,151 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:30:40,368 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:30:40,368 INFO L272 AbstractInterpreter]: Visited 141 different actions 560 times. Merged at 7 different actions 31 times. Widened at 1 different actions 2 times. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-24 23:30:40,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:30:40,404 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:30:40,404 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:30:40,404 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:30:40,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:30:40,418 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:30:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:30:40,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:30:40,698 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:40,698 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:30:41,089 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:30:41,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:30:41,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2018-10-24 23:30:41,111 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:30:41,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 23:30:41,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 23:30:41,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-24 23:30:41,113 INFO L87 Difference]: Start difference. First operand 7411 states and 10748 transitions. Second operand 10 states. [2018-10-24 23:30:42,223 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 23:30:42,810 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 23:30:43,181 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 23:30:44,014 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 23:30:46,937 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-24 23:30:59,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:30:59,939 INFO L93 Difference]: Finished difference Result 30334 states and 50284 transitions. [2018-10-24 23:30:59,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-24 23:30:59,942 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 257 [2018-10-24 23:30:59,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:31:00,088 INFO L225 Difference]: With dead ends: 30334 [2018-10-24 23:31:00,088 INFO L226 Difference]: Without dead ends: 22929 [2018-10-24 23:31:00,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 537 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2258 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=971, Invalid=5035, Unknown=0, NotChecked=0, Total=6006 [2018-10-24 23:31:00,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22929 states. [2018-10-24 23:31:00,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22929 to 22159. [2018-10-24 23:31:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22159 states. [2018-10-24 23:31:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22159 states to 22159 states and 32372 transitions. [2018-10-24 23:31:00,893 INFO L78 Accepts]: Start accepts. Automaton has 22159 states and 32372 transitions. Word has length 257 [2018-10-24 23:31:00,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:31:00,893 INFO L481 AbstractCegarLoop]: Abstraction has 22159 states and 32372 transitions. [2018-10-24 23:31:00,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 23:31:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 22159 states and 32372 transitions. [2018-10-24 23:31:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-24 23:31:00,910 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:31:00,911 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:31:00,911 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:31:00,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:31:00,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1502199694, now seen corresponding path program 1 times [2018-10-24 23:31:00,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:31:00,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:31:00,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:31:00,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:31:00,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:31:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:31:01,610 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 23:31:02,019 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 23:31:02,287 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 23:31:02,594 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 23:31:03,185 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2018-10-24 23:31:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:31:03,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:31:03,629 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:31:03,629 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 280 with the following transitions: [2018-10-24 23:31:03,630 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [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], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [846], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:31:03,638 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:31:03,638 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:31:05,547 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:31:05,547 INFO L272 AbstractInterpreter]: Visited 153 different actions 454 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-24 23:31:05,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:31:05,583 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:31:05,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:31:05,583 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:31:05,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:31:05,595 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:31:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:31:05,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:31:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:31:06,438 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:31:06,707 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2018-10-24 23:31:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:31:07,385 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:31:07,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-10-24 23:31:07,385 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:31:07,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 23:31:07,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 23:31:07,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-10-24 23:31:07,387 INFO L87 Difference]: Start difference. First operand 22159 states and 32372 transitions. Second operand 18 states. [2018-10-24 23:31:15,892 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2018-10-24 23:31:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:31:19,535 INFO L93 Difference]: Finished difference Result 44905 states and 75010 transitions. [2018-10-24 23:31:19,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-24 23:31:19,536 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 279 [2018-10-24 23:31:19,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:31:19,722 INFO L225 Difference]: With dead ends: 44905 [2018-10-24 23:31:19,722 INFO L226 Difference]: Without dead ends: 23132 [2018-10-24 23:31:19,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 565 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=808, Invalid=2614, Unknown=0, NotChecked=0, Total=3422 [2018-10-24 23:31:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23132 states. [2018-10-24 23:31:20,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23132 to 22301. [2018-10-24 23:31:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22301 states. [2018-10-24 23:31:20,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22301 states to 22301 states and 31603 transitions. [2018-10-24 23:31:20,573 INFO L78 Accepts]: Start accepts. Automaton has 22301 states and 31603 transitions. Word has length 279 [2018-10-24 23:31:20,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:31:20,574 INFO L481 AbstractCegarLoop]: Abstraction has 22301 states and 31603 transitions. [2018-10-24 23:31:20,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 23:31:20,574 INFO L276 IsEmpty]: Start isEmpty. Operand 22301 states and 31603 transitions. [2018-10-24 23:31:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-24 23:31:20,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:31:20,601 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:31:20,601 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:31:20,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:31:20,601 INFO L82 PathProgramCache]: Analyzing trace with hash 613043494, now seen corresponding path program 1 times [2018-10-24 23:31:20,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:31:20,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:31:20,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:31:20,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:31:20,603 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:31:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:31:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-24 23:31:20,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:31:20,813 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:31:20,813 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 295 with the following transitions: [2018-10-24 23:31:20,814 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [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], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [774], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [846], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:31:20,819 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:31:20,819 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:31:20,936 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:31:20,936 INFO L272 AbstractInterpreter]: Visited 150 different actions 150 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 23:31:20,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:31:20,967 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:31:21,502 INFO L232 lantSequenceWeakener]: Weakened 284 states. On average, predicates are now at 73.03% of their original sizes. [2018-10-24 23:31:21,502 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:31:21,806 INFO L413 sIntCurrentIteration]: We have 293 unified AI predicates [2018-10-24 23:31:21,808 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:31:21,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:31:21,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [3] total 8 [2018-10-24 23:31:21,809 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:31:21,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 23:31:21,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 23:31:21,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:31:21,811 INFO L87 Difference]: Start difference. First operand 22301 states and 31603 transitions. Second operand 7 states. [2018-10-24 23:32:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:32:26,690 INFO L93 Difference]: Finished difference Result 44220 states and 62789 transitions. [2018-10-24 23:32:26,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:32:26,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2018-10-24 23:32:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:32:26,783 INFO L225 Difference]: With dead ends: 44220 [2018-10-24 23:32:26,783 INFO L226 Difference]: Without dead ends: 22305 [2018-10-24 23:32:26,845 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 294 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:32:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22305 states. [2018-10-24 23:32:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22305 to 22302. [2018-10-24 23:32:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22302 states. [2018-10-24 23:32:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22302 states to 22302 states and 31602 transitions. [2018-10-24 23:32:27,317 INFO L78 Accepts]: Start accepts. Automaton has 22302 states and 31602 transitions. Word has length 294 [2018-10-24 23:32:27,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:32:27,318 INFO L481 AbstractCegarLoop]: Abstraction has 22302 states and 31602 transitions. [2018-10-24 23:32:27,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 23:32:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 22302 states and 31602 transitions. [2018-10-24 23:32:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-24 23:32:27,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:32:27,344 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:32:27,344 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:32:27,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:32:27,345 INFO L82 PathProgramCache]: Analyzing trace with hash 534364079, now seen corresponding path program 1 times [2018-10-24 23:32:27,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:32:27,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:32:27,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:32:27,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:32:27,346 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:32:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:32:28,093 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 23:32:28,336 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 23:32:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 30 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:32:28,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:32:28,891 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:32:28,891 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2018-10-24 23:32:28,892 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [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], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [846], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 23:32:28,895 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:32:28,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:32:29,893 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:32:29,893 INFO L272 AbstractInterpreter]: Visited 157 different actions 467 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-24 23:32:29,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:32:29,901 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:32:29,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:32:29,901 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:32:29,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:32:29,910 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:32:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:32:30,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:32:32,189 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2018-10-24 23:32:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:32:34,530 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:32:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:32:35,290 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:32:35,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5] total 19 [2018-10-24 23:32:35,290 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:32:35,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 23:32:35,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 23:32:35,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=271, Unknown=2, NotChecked=0, Total=342 [2018-10-24 23:32:35,291 INFO L87 Difference]: Start difference. First operand 22302 states and 31602 transitions. Second operand 17 states. [2018-10-24 23:32:49,049 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 21 Received shutdown request... [2018-10-24 23:33:59,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-24 23:33:59,651 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:33:59,657 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:33:59,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:33:59 BoogieIcfgContainer [2018-10-24 23:33:59,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:33:59,658 INFO L168 Benchmark]: Toolchain (without parser) took 238754.22 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 1.4 GB in the end (delta: 56.6 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-24 23:33:59,659 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:33:59,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 987.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:33:59,660 INFO L168 Benchmark]: Boogie Procedure Inliner took 290.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -831.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-24 23:33:59,661 INFO L168 Benchmark]: Boogie Preprocessor took 147.82 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:33:59,661 INFO L168 Benchmark]: RCFGBuilder took 4226.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 189.2 MB). Peak memory consumption was 189.2 MB. Max. memory is 7.1 GB. [2018-10-24 23:33:59,662 INFO L168 Benchmark]: TraceAbstraction took 233096.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 635.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 23:33:59,667 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 987.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 290.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -831.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 147.82 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4226.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 189.2 MB). Peak memory consumption was 189.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233096.62 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.4 GB in the end (delta: 635.3 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was constructing difference of abstraction (22302states) and FLOYD_HOARE automaton (currently 30 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (14602 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 233.0s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 203.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2242 SDtfs, 14512 SDslu, 2747 SDs, 0 SdLazy, 29214 SolverSat, 5742 SolverUnsat, 31 SolverUnknown, 0 SolverNotchecked, 179.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2660 GetRequests, 2436 SyntacticMatches, 16 SemanticMatches, 208 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3564 ImplicationChecksByTransitivity, 19.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22302occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.8s AbstIntTime, 5 AbstIntIterations, 1 AbstIntStrong, 0.9983823400717596 AbsIntWeakeningRatio, 0.09897610921501707 AbsIntAvgWeakeningVarsNumRemoved, 18.296928327645052 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 2502 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 16.1s InterpolantComputationTime, 2941 NumberOfCodeBlocks, 2941 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3979 ConstructedInterpolants, 9 QuantifiedInterpolants, 8099110 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1882 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 1687/1891 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown