java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 10:52:23,676 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 10:52:23,678 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 10:52:23,691 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 10:52:23,692 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 10:52:23,693 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 10:52:23,694 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 10:52:23,696 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 10:52:23,698 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 10:52:23,699 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 10:52:23,700 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 10:52:23,701 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 10:52:23,702 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 10:52:23,703 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 10:52:23,704 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 10:52:23,705 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 10:52:23,706 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 10:52:23,708 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 10:52:23,711 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 10:52:23,712 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 10:52:23,713 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 10:52:23,715 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 10:52:23,717 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 10:52:23,725 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 10:52:23,725 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 10:52:23,726 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 10:52:23,727 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 10:52:23,728 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 10:52:23,744 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 10:52:23,745 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 10:52:23,746 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 10:52:23,746 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 10:52:23,746 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 10:52:23,747 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 10:52:23,747 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 10:52:23,747 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 10:52:23,747 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 10:52:23,748 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 10:52:23,748 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 10:52:23,748 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 10:52:23,749 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 10:52:23,749 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 10:52:23,749 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 10:52:23,753 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 10:52:23,753 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 10:52:23,753 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 10:52:23,753 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 10:52:23,754 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 10:52:23,754 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 10:52:23,755 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 10:52:23,755 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 10:52:23,755 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 10:52:23,755 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 10:52:23,755 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 10:52:23,756 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 10:52:23,756 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 10:52:23,756 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 10:52:23,756 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 10:52:23,756 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 10:52:23,757 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 10:52:23,757 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 10:52:23,757 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 10:52:23,826 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 10:52:23,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 10:52:23,850 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 10:52:23,852 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 10:52:23,852 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 10:52:23,853 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label28_false-unreach-call.c [2018-11-07 10:52:23,922 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff4300b0d/7e2a625dd66a449a99f34b3c81149c8f/FLAGfcbeadaf2 [2018-11-07 10:52:24,593 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 10:52:24,594 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label28_false-unreach-call.c [2018-11-07 10:52:24,621 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff4300b0d/7e2a625dd66a449a99f34b3c81149c8f/FLAGfcbeadaf2 [2018-11-07 10:52:24,641 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff4300b0d/7e2a625dd66a449a99f34b3c81149c8f [2018-11-07 10:52:24,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 10:52:24,656 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 10:52:24,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 10:52:24,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 10:52:24,665 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 10:52:24,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:52:24" (1/1) ... [2018-11-07 10:52:24,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f02a909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:24, skipping insertion in model container [2018-11-07 10:52:24,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:52:24" (1/1) ... [2018-11-07 10:52:24,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 10:52:24,803 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 10:52:25,657 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:52:25,664 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 10:52:25,931 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:52:25,956 INFO L193 MainTranslator]: Completed translation [2018-11-07 10:52:25,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25 WrapperNode [2018-11-07 10:52:25,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 10:52:25,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 10:52:25,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 10:52:25,958 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 10:52:25,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (1/1) ... [2018-11-07 10:52:26,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (1/1) ... [2018-11-07 10:52:26,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 10:52:26,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 10:52:26,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 10:52:26,160 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 10:52:26,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (1/1) ... [2018-11-07 10:52:26,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (1/1) ... [2018-11-07 10:52:26,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (1/1) ... [2018-11-07 10:52:26,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (1/1) ... [2018-11-07 10:52:26,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (1/1) ... [2018-11-07 10:52:26,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (1/1) ... [2018-11-07 10:52:26,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (1/1) ... [2018-11-07 10:52:26,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 10:52:26,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 10:52:26,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 10:52:26,311 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 10:52:26,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 10:52:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 10:52:26,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 10:52:26,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 10:52:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 10:52:26,384 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 10:52:26,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 10:52:26,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 10:52:26,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 10:52:26,385 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 10:52:31,490 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 10:52:31,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:52:31 BoogieIcfgContainer [2018-11-07 10:52:31,493 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 10:52:31,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 10:52:31,494 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 10:52:31,500 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 10:52:31,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:52:24" (1/3) ... [2018-11-07 10:52:31,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d44c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:52:31, skipping insertion in model container [2018-11-07 10:52:31,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:52:25" (2/3) ... [2018-11-07 10:52:31,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511d44c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:52:31, skipping insertion in model container [2018-11-07 10:52:31,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:52:31" (3/3) ... [2018-11-07 10:52:31,505 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label28_false-unreach-call.c [2018-11-07 10:52:31,518 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 10:52:31,530 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 10:52:31,548 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 10:52:31,604 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 10:52:31,604 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 10:52:31,604 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 10:52:31,604 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 10:52:31,604 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 10:52:31,605 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 10:52:31,605 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 10:52:31,605 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 10:52:31,646 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 10:52:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-07 10:52:31,671 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:52:31,673 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:52:31,675 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:52:31,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:52:31,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2014682908, now seen corresponding path program 1 times [2018-11-07 10:52:31,686 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:52:31,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:31,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:52:31,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:31,749 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:52:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:52:32,598 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 10:52:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:52:32,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:52:32,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 10:52:32,800 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:52:32,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 10:52:32,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 10:52:32,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:52:32,825 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 10:52:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:52:35,090 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-11-07 10:52:35,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 10:52:35,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2018-11-07 10:52:35,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:52:35,115 INFO L225 Difference]: With dead ends: 838 [2018-11-07 10:52:35,116 INFO L226 Difference]: Without dead ends: 524 [2018-11-07 10:52:35,124 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:52:35,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-11-07 10:52:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-11-07 10:52:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-07 10:52:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-11-07 10:52:35,216 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 159 [2018-11-07 10:52:35,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:52:35,218 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-11-07 10:52:35,218 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 10:52:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-11-07 10:52:35,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-07 10:52:35,225 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:52:35,225 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:52:35,226 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:52:35,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:52:35,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1120639275, now seen corresponding path program 1 times [2018-11-07 10:52:35,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:52:35,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:35,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:52:35,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:35,229 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:52:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:52:35,584 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 10:52:35,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:52:35,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:52:35,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 10:52:35,798 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:52:35,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 10:52:35,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 10:52:35,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 10:52:35,802 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-11-07 10:52:39,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:52:39,802 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-11-07 10:52:39,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 10:52:39,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 169 [2018-11-07 10:52:39,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:52:39,820 INFO L225 Difference]: With dead ends: 1581 [2018-11-07 10:52:39,820 INFO L226 Difference]: Without dead ends: 1065 [2018-11-07 10:52:39,824 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 10:52:39,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-11-07 10:52:39,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-11-07 10:52:39,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-11-07 10:52:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-11-07 10:52:39,904 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 169 [2018-11-07 10:52:39,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:52:39,904 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-11-07 10:52:39,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 10:52:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-11-07 10:52:39,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-07 10:52:39,909 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:52:39,909 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:52:39,910 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:52:39,910 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:52:39,910 INFO L82 PathProgramCache]: Analyzing trace with hash -362863336, now seen corresponding path program 1 times [2018-11-07 10:52:39,910 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:52:39,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:39,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:52:39,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:39,912 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:52:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:52:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:52:40,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:52:40,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 10:52:40,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:52:40,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 10:52:40,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 10:52:40,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:52:40,239 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-11-07 10:52:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:52:42,918 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-11-07 10:52:42,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 10:52:42,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2018-11-07 10:52:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:52:42,930 INFO L225 Difference]: With dead ends: 2887 [2018-11-07 10:52:42,931 INFO L226 Difference]: Without dead ends: 1870 [2018-11-07 10:52:42,936 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:52:42,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-11-07 10:52:42,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-11-07 10:52:42,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-11-07 10:52:42,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-11-07 10:52:42,993 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 172 [2018-11-07 10:52:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:52:42,993 INFO L480 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-11-07 10:52:42,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 10:52:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-11-07 10:52:43,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-07 10:52:43,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:52:43,001 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:52:43,001 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:52:43,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:52:43,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1612799655, now seen corresponding path program 1 times [2018-11-07 10:52:43,002 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:52:43,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:43,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:52:43,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:43,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:52:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:52:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:52:43,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:52:43,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 10:52:43,287 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:52:43,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 10:52:43,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 10:52:43,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:52:43,288 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 3 states. [2018-11-07 10:52:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:52:44,891 INFO L93 Difference]: Finished difference Result 5412 states and 9175 transitions. [2018-11-07 10:52:44,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 10:52:44,893 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-11-07 10:52:44,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:52:44,919 INFO L225 Difference]: With dead ends: 5412 [2018-11-07 10:52:44,919 INFO L226 Difference]: Without dead ends: 3553 [2018-11-07 10:52:44,928 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:52:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2018-11-07 10:52:45,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 3551. [2018-11-07 10:52:45,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3551 states. [2018-11-07 10:52:45,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 5637 transitions. [2018-11-07 10:52:45,049 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 5637 transitions. Word has length 192 [2018-11-07 10:52:45,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:52:45,050 INFO L480 AbstractCegarLoop]: Abstraction has 3551 states and 5637 transitions. [2018-11-07 10:52:45,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 10:52:45,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 5637 transitions. [2018-11-07 10:52:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-07 10:52:45,063 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:52:45,063 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:52:45,064 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:52:45,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:52:45,064 INFO L82 PathProgramCache]: Analyzing trace with hash -35084211, now seen corresponding path program 1 times [2018-11-07 10:52:45,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:52:45,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:45,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:52:45,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:45,067 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:52:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:52:45,362 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 10:52:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:52:45,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:52:45,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 10:52:45,422 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:52:45,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 10:52:45,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 10:52:45,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 10:52:45,424 INFO L87 Difference]: Start difference. First operand 3551 states and 5637 transitions. Second operand 6 states. [2018-11-07 10:52:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:52:47,460 INFO L93 Difference]: Finished difference Result 8962 states and 15042 transitions. [2018-11-07 10:52:47,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 10:52:47,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2018-11-07 10:52:47,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:52:47,503 INFO L225 Difference]: With dead ends: 8962 [2018-11-07 10:52:47,503 INFO L226 Difference]: Without dead ends: 5417 [2018-11-07 10:52:47,521 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 10:52:47,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2018-11-07 10:52:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 5329. [2018-11-07 10:52:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5329 states. [2018-11-07 10:52:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5329 states to 5329 states and 7602 transitions. [2018-11-07 10:52:47,707 INFO L78 Accepts]: Start accepts. Automaton has 5329 states and 7602 transitions. Word has length 197 [2018-11-07 10:52:47,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:52:47,708 INFO L480 AbstractCegarLoop]: Abstraction has 5329 states and 7602 transitions. [2018-11-07 10:52:47,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 10:52:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 5329 states and 7602 transitions. [2018-11-07 10:52:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 10:52:47,726 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:52:47,727 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:52:47,727 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:52:47,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:52:47,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1506539486, now seen corresponding path program 1 times [2018-11-07 10:52:47,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:52:47,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:47,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:52:47,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:47,729 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:52:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:52:47,961 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:52:47,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:52:47,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 10:52:47,961 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:52:47,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 10:52:47,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 10:52:47,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 10:52:47,963 INFO L87 Difference]: Start difference. First operand 5329 states and 7602 transitions. Second operand 6 states. [2018-11-07 10:52:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:52:49,859 INFO L93 Difference]: Finished difference Result 11197 states and 16329 transitions. [2018-11-07 10:52:49,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 10:52:49,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 218 [2018-11-07 10:52:49,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:52:49,897 INFO L225 Difference]: With dead ends: 11197 [2018-11-07 10:52:49,897 INFO L226 Difference]: Without dead ends: 5874 [2018-11-07 10:52:49,920 INFO L604 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 [2018-11-07 10:52:49,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2018-11-07 10:52:50,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5601. [2018-11-07 10:52:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5601 states. [2018-11-07 10:52:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5601 states to 5601 states and 7541 transitions. [2018-11-07 10:52:50,122 INFO L78 Accepts]: Start accepts. Automaton has 5601 states and 7541 transitions. Word has length 218 [2018-11-07 10:52:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:52:50,123 INFO L480 AbstractCegarLoop]: Abstraction has 5601 states and 7541 transitions. [2018-11-07 10:52:50,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 10:52:50,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5601 states and 7541 transitions. [2018-11-07 10:52:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-11-07 10:52:50,143 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:52:50,144 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:52:50,144 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:52:50,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:52:50,145 INFO L82 PathProgramCache]: Analyzing trace with hash -693136218, now seen corresponding path program 1 times [2018-11-07 10:52:50,145 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:52:50,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:50,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:52:50,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:52:50,146 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:52:50,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:52:50,753 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 10:52:51,044 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 77 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:52:51,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:52:51,045 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:52:51,046 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-11-07 10:52:51,048 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 10:52:51,126 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 10:52:51,127 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:53:12,443 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 10:53:12,445 INFO L272 AbstractInterpreter]: Visited 160 different actions 160 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 10:53:12,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:53:12,480 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 10:53:27,708 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 70.4% of their original sizes. [2018-11-07 10:53:27,709 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 10:53:28,655 INFO L415 sIntCurrentIteration]: We unified 230 AI predicates to 230 [2018-11-07 10:53:28,656 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 10:53:28,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 10:53:28,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 10:53:28,657 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:53:28,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 10:53:28,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 10:53:28,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-11-07 10:53:28,659 INFO L87 Difference]: Start difference. First operand 5601 states and 7541 transitions. Second operand 16 states. [2018-11-07 10:54:15,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:54:15,701 INFO L93 Difference]: Finished difference Result 11406 states and 15355 transitions. [2018-11-07 10:54:15,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 10:54:15,701 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 231 [2018-11-07 10:54:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:54:15,725 INFO L225 Difference]: With dead ends: 11406 [2018-11-07 10:54:15,725 INFO L226 Difference]: Without dead ends: 5811 [2018-11-07 10:54:15,740 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2018-11-07 10:54:15,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2018-11-07 10:54:15,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 5809. [2018-11-07 10:54:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5809 states. [2018-11-07 10:54:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5809 states to 5809 states and 7758 transitions. [2018-11-07 10:54:15,883 INFO L78 Accepts]: Start accepts. Automaton has 5809 states and 7758 transitions. Word has length 231 [2018-11-07 10:54:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:54:15,883 INFO L480 AbstractCegarLoop]: Abstraction has 5809 states and 7758 transitions. [2018-11-07 10:54:15,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 10:54:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5809 states and 7758 transitions. [2018-11-07 10:54:15,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-07 10:54:15,902 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:54:15,902 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:54:15,902 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:54:15,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:54:15,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1743759759, now seen corresponding path program 1 times [2018-11-07 10:54:15,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:54:15,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:54:15,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:54:15,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:54:15,904 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:54:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:54:16,463 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 10:54:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:54:16,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:54:16,690 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:54:16,690 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-11-07 10:54:16,690 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 10:54:16,699 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 10:54:16,699 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:55:55,582 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 10:55:55,583 INFO L272 AbstractInterpreter]: Visited 164 different actions 320 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 10:55:55,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:55:55,589 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 10:55:55,589 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:55:55,589 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 10:55:55,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:55:55,600 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 10:55:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:55:55,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:55:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 38 proven. 54 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 10:55:56,035 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 10:55:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 10:55:56,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 10:55:56,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2018-11-07 10:55:56,337 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 10:55:56,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 10:55:56,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 10:55:56,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 10:55:56,339 INFO L87 Difference]: Start difference. First operand 5809 states and 7758 transitions. Second operand 8 states. [2018-11-07 10:55:57,385 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 10:55:58,992 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 10:55:59,364 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-07 10:56:05,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:56:05,260 INFO L93 Difference]: Finished difference Result 28348 states and 42887 transitions. [2018-11-07 10:56:05,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 10:56:05,261 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2018-11-07 10:56:05,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:56:05,385 INFO L225 Difference]: With dead ends: 28348 [2018-11-07 10:56:05,386 INFO L226 Difference]: Without dead ends: 22753 [2018-11-07 10:56:05,453 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=278, Invalid=912, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 10:56:05,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22753 states. [2018-11-07 10:56:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22753 to 22213. [2018-11-07 10:56:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22213 states. [2018-11-07 10:56:06,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22213 states to 22213 states and 27770 transitions. [2018-11-07 10:56:06,315 INFO L78 Accepts]: Start accepts. Automaton has 22213 states and 27770 transitions. Word has length 240 [2018-11-07 10:56:06,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:56:06,316 INFO L480 AbstractCegarLoop]: Abstraction has 22213 states and 27770 transitions. [2018-11-07 10:56:06,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 10:56:06,316 INFO L276 IsEmpty]: Start isEmpty. Operand 22213 states and 27770 transitions. [2018-11-07 10:56:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-11-07 10:56:06,367 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:56:06,367 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:56:06,368 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:56:06,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:56:06,368 INFO L82 PathProgramCache]: Analyzing trace with hash -556279620, now seen corresponding path program 1 times [2018-11-07 10:56:06,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:56:06,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:56:06,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:56:06,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:56:06,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:56:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:56:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 95 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-07 10:56:06,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:56:06,880 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:56:06,880 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-11-07 10:56:06,881 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [240], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [733], [735], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 10:56:06,902 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 10:56:06,902 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 10:56:30,155 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 10:56:30,156 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 10:56:30,156 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 10:56:30,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:56:30,157 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 10:56:30,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:56:30,173 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 10:56:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:56:30,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:56:30,402 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 10:56:30,603 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 10:56:30,603 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 10:56:30,608 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 10:56:30,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:56:30 BoogieIcfgContainer [2018-11-07 10:56:30,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 10:56:30,610 INFO L168 Benchmark]: Toolchain (without parser) took 245954.43 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 10:56:30,611 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-07 10:56:30,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1300.11 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 10:56:30,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 201.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -877.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-11-07 10:56:30,613 INFO L168 Benchmark]: Boogie Preprocessor took 150.84 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. [2018-11-07 10:56:30,613 INFO L168 Benchmark]: RCFGBuilder took 5182.14 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: 265.8 MB). Peak memory consumption was 265.8 MB. Max. memory is 7.1 GB. [2018-11-07 10:56:30,614 INFO L168 Benchmark]: TraceAbstraction took 239114.76 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -695.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 10:56:30,619 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1300.11 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 201.49 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -877.5 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.84 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 5182.14 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: 265.8 MB). Peak memory consumption was 265.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239114.76 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.7 GB in the end (delta: -695.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1491]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1491). Cancelled while BasicCegarLoop was analyzing trace of length 249 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 239.0s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 70.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2173 SDtfs, 6359 SDslu, 1591 SDs, 0 SdLazy, 10332 SolverSat, 2448 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 802 GetRequests, 722 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22213occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 143.6s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.9992874419737565 AbsIntWeakeningRatio, 0.2608695652173913 AbsIntAvgWeakeningVarsNumRemoved, 60.017391304347825 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 954 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 1818 NumberOfCodeBlocks, 1818 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2048 ConstructedInterpolants, 0 QuantifiedInterpolants, 1382608 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 448/508 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown