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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label14_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:12:51,512 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:12:51,514 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:12:51,533 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:12:51,534 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:12:51,535 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:12:51,537 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:12:51,540 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:12:51,547 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:12:51,548 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:12:51,549 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:12:51,549 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:12:51,551 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:12:51,552 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:12:51,553 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:12:51,554 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:12:51,555 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:12:51,556 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:12:51,558 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:12:51,560 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:12:51,561 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:12:51,562 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:12:51,564 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:12:51,564 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:12:51,564 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:12:51,566 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:12:51,567 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:12:51,568 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:12:51,568 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:12:51,570 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:12:51,570 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:12:51,570 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:12:51,571 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:12:51,571 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:12:51,572 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:12:51,572 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:12:51,573 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-LIM.epf [2018-11-07 18:12:51,588 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:12:51,588 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:12:51,590 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:12:51,590 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:12:51,590 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:12:51,591 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:12:51,591 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:12:51,591 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:12:51,591 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:12:51,591 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:12:51,591 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:12:51,594 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:12:51,594 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:12:51,595 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:12:51,596 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:12:51,596 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:12:51,596 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:12:51,596 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:12:51,596 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:12:51,597 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:12:51,599 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:12:51,599 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:12:51,599 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:12:51,599 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:12:51,599 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:12:51,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:12:51,600 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:12:51,600 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:12:51,600 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:12:51,601 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:12:51,601 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:12:51,601 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:12:51,601 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:12:51,601 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:12:51,601 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:12:51,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:12:51,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:12:51,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:12:51,690 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:12:51,690 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:12:51,691 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label14_false-unreach-call.c [2018-11-07 18:12:51,748 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eeb4743f/4f474d7235d44c7890857013025c26a9/FLAGbe0bb86e5 [2018-11-07 18:12:52,365 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:12:52,365 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label14_false-unreach-call.c [2018-11-07 18:12:52,388 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eeb4743f/4f474d7235d44c7890857013025c26a9/FLAGbe0bb86e5 [2018-11-07 18:12:52,407 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1eeb4743f/4f474d7235d44c7890857013025c26a9 [2018-11-07 18:12:52,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:12:52,421 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:12:52,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:12:52,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:12:52,429 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:12:52,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:12:52" (1/1) ... [2018-11-07 18:12:52,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab4496a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:52, skipping insertion in model container [2018-11-07 18:12:52,434 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:12:52" (1/1) ... [2018-11-07 18:12:52,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:12:52,537 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:12:53,449 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:12:53,454 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:12:53,682 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:12:53,705 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:12:53,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53 WrapperNode [2018-11-07 18:12:53,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:12:53,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:12:53,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:12:53,707 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:12:53,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (1/1) ... [2018-11-07 18:12:53,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (1/1) ... [2018-11-07 18:12:53,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:12:53,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:12:53,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:12:53,927 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:12:53,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (1/1) ... [2018-11-07 18:12:53,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (1/1) ... [2018-11-07 18:12:53,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (1/1) ... [2018-11-07 18:12:53,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (1/1) ... [2018-11-07 18:12:54,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (1/1) ... [2018-11-07 18:12:54,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (1/1) ... [2018-11-07 18:12:54,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (1/1) ... [2018-11-07 18:12:54,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:12:54,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:12:54,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:12:54,077 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:12:54,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (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 18:12:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:12:54,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:12:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:12:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:12:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:12:54,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:12:54,164 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:12:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:12:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:12:54,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:12:54,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:13:00,927 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:13:00,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:13:00 BoogieIcfgContainer [2018-11-07 18:13:00,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:13:00,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:13:00,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:13:00,934 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:13:00,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:12:52" (1/3) ... [2018-11-07 18:13:00,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a76224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:13:00, skipping insertion in model container [2018-11-07 18:13:00,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:12:53" (2/3) ... [2018-11-07 18:13:00,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a76224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:13:00, skipping insertion in model container [2018-11-07 18:13:00,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:13:00" (3/3) ... [2018-11-07 18:13:00,938 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label14_false-unreach-call.c [2018-11-07 18:13:00,946 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:13:00,955 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:13:00,970 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:13:01,014 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:13:01,014 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:13:01,014 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:13:01,015 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:13:01,015 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:13:01,015 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:13:01,015 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:13:01,015 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:13:01,049 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 18:13:01,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-07 18:13:01,057 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:01,058 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] [2018-11-07 18:13:01,061 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:01,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:01,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1095563467, now seen corresponding path program 1 times [2018-11-07 18:13:01,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:01,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:01,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:01,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:01,123 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:01,536 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:13:01,613 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 18:13:01,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:01,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:13:01,616 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:01,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:13:01,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:13:01,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:13:01,639 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 18:13:05,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:05,545 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 18:13:05,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:13:05,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-11-07 18:13:05,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:05,575 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 18:13:05,576 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 18:13:05,584 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 18:13:05,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 18:13:05,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 18:13:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 18:13:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-11-07 18:13:05,716 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 25 [2018-11-07 18:13:05,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:05,716 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-11-07 18:13:05,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:13:05,717 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-11-07 18:13:05,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-07 18:13:05,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:05,723 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:13:05,724 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:05,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:05,724 INFO L82 PathProgramCache]: Analyzing trace with hash -826057540, now seen corresponding path program 1 times [2018-11-07 18:13:05,724 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:05,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:05,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:05,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:05,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:05,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:13:05,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:05,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:13:05,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:06,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:13:06,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:13:06,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:13:06,001 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-11-07 18:13:11,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:11,552 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-11-07 18:13:11,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:13:11,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-11-07 18:13:11,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:11,565 INFO L225 Difference]: With dead ends: 2194 [2018-11-07 18:13:11,566 INFO L226 Difference]: Without dead ends: 1456 [2018-11-07 18:13:11,570 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:13:11,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-11-07 18:13:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-11-07 18:13:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-11-07 18:13:11,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-11-07 18:13:11,636 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 95 [2018-11-07 18:13:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:11,637 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-11-07 18:13:11,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:13:11,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-11-07 18:13:11,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 18:13:11,645 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:11,646 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:13:11,646 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:11,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:11,647 INFO L82 PathProgramCache]: Analyzing trace with hash -298596995, now seen corresponding path program 1 times [2018-11-07 18:13:11,647 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:11,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:11,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:11,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:11,650 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:13:11,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:11,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:13:11,966 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:11,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:13:11,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:13:11,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:13:11,968 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-11-07 18:13:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:16,935 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-11-07 18:13:16,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:13:16,935 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-11-07 18:13:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:16,961 INFO L225 Difference]: With dead ends: 3936 [2018-11-07 18:13:16,961 INFO L226 Difference]: Without dead ends: 2506 [2018-11-07 18:13:16,971 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:13:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-11-07 18:13:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-11-07 18:13:17,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-11-07 18:13:17,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-11-07 18:13:17,065 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 124 [2018-11-07 18:13:17,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:17,066 INFO L480 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-11-07 18:13:17,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:13:17,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-11-07 18:13:17,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 18:13:17,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:17,077 INFO L375 BasicCegarLoop]: trace histogram [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 18:13:17,079 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:17,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:17,080 INFO L82 PathProgramCache]: Analyzing trace with hash 113309953, now seen corresponding path program 1 times [2018-11-07 18:13:17,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:17,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:17,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:17,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:17,081 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:13:17,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:13:17,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:13:17,382 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:17,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:13:17,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:13:17,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:13:17,386 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-11-07 18:13:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:20,376 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-11-07 18:13:20,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:13:20,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-11-07 18:13:20,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:20,403 INFO L225 Difference]: With dead ends: 6050 [2018-11-07 18:13:20,403 INFO L226 Difference]: Without dead ends: 3577 [2018-11-07 18:13:20,414 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:13:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-11-07 18:13:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-11-07 18:13:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-11-07 18:13:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-11-07 18:13:20,518 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 142 [2018-11-07 18:13:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:20,518 INFO L480 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-11-07 18:13:20,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:13:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-11-07 18:13:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-07 18:13:20,522 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:20,522 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-07 18:13:20,523 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:20,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:20,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1758923227, now seen corresponding path program 1 times [2018-11-07 18:13:20,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:20,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:20,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:20,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:20,525 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 85 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:13:20,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:13:20,930 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:13:20,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-07 18:13:20,939 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:13:21,002 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:13:21,003 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:13:21,894 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:13:21,895 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:13:21,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:21,939 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:13:22,906 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 77.55% of their original sizes. [2018-11-07 18:13:22,906 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:13:24,475 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-07 18:13:24,475 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:13:24,476 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:13:24,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 18:13:24,476 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:24,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 18:13:24,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 18:13:24,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:13:24,478 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 11 states. [2018-11-07 18:13:31,098 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:13:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:13:52,757 INFO L93 Difference]: Finished difference Result 7427 states and 10353 transitions. [2018-11-07 18:13:52,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 18:13:52,757 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 225 [2018-11-07 18:13:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:13:52,774 INFO L225 Difference]: With dead ends: 7427 [2018-11-07 18:13:52,774 INFO L226 Difference]: Without dead ends: 3888 [2018-11-07 18:13:52,787 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 229 GetRequests, 179 SyntacticMatches, 36 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:13:52,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3888 states. [2018-11-07 18:13:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3888 to 3883. [2018-11-07 18:13:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-11-07 18:13:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-11-07 18:13:52,875 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 225 [2018-11-07 18:13:52,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:13:52,875 INFO L480 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-11-07 18:13:52,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 18:13:52,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-11-07 18:13:52,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-07 18:13:52,881 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:13:52,882 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:13:52,882 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:13:52,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:52,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1713198942, now seen corresponding path program 1 times [2018-11-07 18:13:52,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:13:52,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:52,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:13:52,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:13:52,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:13:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:13:53,167 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 18:13:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 126 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-07 18:13:53,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:13:53,308 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:13:53,308 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-11-07 18:13:53,309 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:13:53,315 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:13:53,315 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:13:53,372 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:13:53,637 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:13:53,637 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:13:53,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:13:53,651 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:13:54,190 INFO L227 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 78% of their original sizes. [2018-11-07 18:13:54,190 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:13:55,633 INFO L415 sIntCurrentIteration]: We unified 316 AI predicates to 316 [2018-11-07 18:13:55,633 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:13:55,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:13:55,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [7] total 28 [2018-11-07 18:13:55,634 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:13:55,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:13:55,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:13:55,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:13:55,636 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 23 states. [2018-11-07 18:14:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:14:41,452 INFO L93 Difference]: Finished difference Result 9492 states and 12812 transitions. [2018-11-07 18:14:41,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 18:14:41,452 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 317 [2018-11-07 18:14:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:14:41,473 INFO L225 Difference]: With dead ends: 9492 [2018-11-07 18:14:41,474 INFO L226 Difference]: Without dead ends: 5953 [2018-11-07 18:14:41,488 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 336 GetRequests, 280 SyntacticMatches, 15 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2018-11-07 18:14:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5953 states. [2018-11-07 18:14:41,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5953 to 5485. [2018-11-07 18:14:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5485 states. [2018-11-07 18:14:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5485 states to 5485 states and 6987 transitions. [2018-11-07 18:14:41,615 INFO L78 Accepts]: Start accepts. Automaton has 5485 states and 6987 transitions. Word has length 317 [2018-11-07 18:14:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:14:41,616 INFO L480 AbstractCegarLoop]: Abstraction has 5485 states and 6987 transitions. [2018-11-07 18:14:41,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:14:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5485 states and 6987 transitions. [2018-11-07 18:14:41,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-11-07 18:14:41,624 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:14:41,625 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:14:41,625 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:14:41,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:14:41,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1541794006, now seen corresponding path program 1 times [2018-11-07 18:14:41,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:14:41,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:14:41,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:14:41,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:14:41,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:14:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:14:41,976 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 18:14:42,441 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 18:14:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 185 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-07 18:14:43,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:14:43,093 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:14:43,093 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-11-07 18:14:43,094 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:14:43,099 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:14:43,099 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:14:43,215 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:14:43,566 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:14:43,566 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:14:43,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:14:43,604 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:14:44,144 INFO L227 lantSequenceWeakener]: Weakened 97 states. On average, predicates are now at 78% of their original sizes. [2018-11-07 18:14:44,144 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:14:45,334 INFO L415 sIntCurrentIteration]: We unified 352 AI predicates to 352 [2018-11-07 18:14:45,335 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:14:45,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:14:45,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [13] total 35 [2018-11-07 18:14:45,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:14:45,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 18:14:45,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 18:14:45,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2018-11-07 18:14:45,337 INFO L87 Difference]: Start difference. First operand 5485 states and 6987 transitions. Second operand 24 states. [2018-11-07 18:15:28,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:28,479 INFO L93 Difference]: Finished difference Result 12309 states and 15800 transitions. [2018-11-07 18:15:28,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 18:15:28,479 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 353 [2018-11-07 18:15:28,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:28,517 INFO L225 Difference]: With dead ends: 12309 [2018-11-07 18:15:28,517 INFO L226 Difference]: Without dead ends: 8035 [2018-11-07 18:15:28,539 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 371 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=330, Invalid=1476, Unknown=0, NotChecked=0, Total=1806 [2018-11-07 18:15:28,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8035 states. [2018-11-07 18:15:28,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8035 to 7099. [2018-11-07 18:15:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7099 states. [2018-11-07 18:15:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7099 states to 7099 states and 8698 transitions. [2018-11-07 18:15:28,718 INFO L78 Accepts]: Start accepts. Automaton has 7099 states and 8698 transitions. Word has length 353 [2018-11-07 18:15:28,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:28,719 INFO L480 AbstractCegarLoop]: Abstraction has 7099 states and 8698 transitions. [2018-11-07 18:15:28,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-07 18:15:28,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7099 states and 8698 transitions. [2018-11-07 18:15:28,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-11-07 18:15:28,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:28,736 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:15:28,737 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:28,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:28,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1303785226, now seen corresponding path program 1 times [2018-11-07 18:15:28,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:28,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:28,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:28,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:28,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 176 proven. 16 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-07 18:15:29,310 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:15:29,310 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:15:29,311 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 466 with the following transitions: [2018-11-07 18:15:29,311 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:15:29,320 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:15:29,320 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:15:30,610 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:15:30,610 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:15:30,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:30,644 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:15:31,127 INFO L227 lantSequenceWeakener]: Weakened 93 states. On average, predicates are now at 78.14% of their original sizes. [2018-11-07 18:15:31,128 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:15:32,841 INFO L415 sIntCurrentIteration]: We unified 464 AI predicates to 464 [2018-11-07 18:15:32,841 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:15:32,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:15:32,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [5] total 24 [2018-11-07 18:15:32,842 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:32,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 18:15:32,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 18:15:32,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-11-07 18:15:32,844 INFO L87 Difference]: Start difference. First operand 7099 states and 8698 transitions. Second operand 21 states. [2018-11-07 18:15:34,834 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:15:51,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:15:51,972 INFO L93 Difference]: Finished difference Result 12754 states and 16092 transitions. [2018-11-07 18:15:51,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:15:51,972 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 465 [2018-11-07 18:15:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:15:51,994 INFO L225 Difference]: With dead ends: 12754 [2018-11-07 18:15:51,995 INFO L226 Difference]: Without dead ends: 7735 [2018-11-07 18:15:52,009 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 478 GetRequests, 392 SyntacticMatches, 53 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 18:15:52,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7735 states. [2018-11-07 18:15:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7735 to 7730. [2018-11-07 18:15:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7730 states. [2018-11-07 18:15:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 9367 transitions. [2018-11-07 18:15:52,174 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 9367 transitions. Word has length 465 [2018-11-07 18:15:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:15:52,175 INFO L480 AbstractCegarLoop]: Abstraction has 7730 states and 9367 transitions. [2018-11-07 18:15:52,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 18:15:52,175 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 9367 transitions. [2018-11-07 18:15:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-11-07 18:15:52,190 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:15:52,190 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 18:15:52,191 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:15:52,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:52,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1666688922, now seen corresponding path program 1 times [2018-11-07 18:15:52,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:15:52,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:52,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:15:52,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:15:52,192 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:15:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:15:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 176 proven. 16 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-07 18:15:52,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:15:52,700 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:15:52,701 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 474 with the following transitions: [2018-11-07 18:15:52,701 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:15:52,706 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:15:52,707 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:15:55,162 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:15:55,162 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:15:55,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:15:55,171 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:15:55,722 INFO L227 lantSequenceWeakener]: Weakened 120 states. On average, predicates are now at 77.92% of their original sizes. [2018-11-07 18:15:55,722 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:15:56,115 INFO L415 sIntCurrentIteration]: We unified 472 AI predicates to 472 [2018-11-07 18:15:56,115 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:15:56,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:15:56,115 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [5] total 27 [2018-11-07 18:15:56,115 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:15:56,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 18:15:56,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 18:15:56,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2018-11-07 18:15:56,117 INFO L87 Difference]: Start difference. First operand 7730 states and 9367 transitions. Second operand 24 states. [2018-11-07 18:15:58,668 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:13,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:16:13,365 INFO L93 Difference]: Finished difference Result 13390 states and 16723 transitions. [2018-11-07 18:16:13,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 18:16:13,365 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 473 [2018-11-07 18:16:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:16:13,390 INFO L225 Difference]: With dead ends: 13390 [2018-11-07 18:16:13,391 INFO L226 Difference]: Without dead ends: 8371 [2018-11-07 18:16:13,406 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 486 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 18:16:13,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2018-11-07 18:16:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 8363. [2018-11-07 18:16:13,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8363 states. [2018-11-07 18:16:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8363 states to 8363 states and 10040 transitions. [2018-11-07 18:16:13,572 INFO L78 Accepts]: Start accepts. Automaton has 8363 states and 10040 transitions. Word has length 473 [2018-11-07 18:16:13,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:16:13,573 INFO L480 AbstractCegarLoop]: Abstraction has 8363 states and 10040 transitions. [2018-11-07 18:16:13,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-07 18:16:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 8363 states and 10040 transitions. [2018-11-07 18:16:13,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2018-11-07 18:16:13,593 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:16:13,593 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:16:13,594 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:16:13,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:13,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1846843531, now seen corresponding path program 1 times [2018-11-07 18:16:13,594 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:16:13,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:13,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:16:13,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:16:13,596 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:16:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:16:14,082 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 18:16:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 39 proven. 216 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:16:15,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:16:15,263 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:16:15,263 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 490 with the following transitions: [2018-11-07 18:16:15,263 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [279], [281], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1288], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 18:16:15,268 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:16:15,268 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:16:15,633 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:16:16,391 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:16:16,391 INFO L272 AbstractInterpreter]: Visited 248 different actions 1475 times. Merged at 7 different actions 42 times. Widened at 1 different actions 2 times. Found 6 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:16:16,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:16:16,395 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:16:17,057 INFO L227 lantSequenceWeakener]: Weakened 150 states. On average, predicates are now at 77.74% of their original sizes. [2018-11-07 18:16:17,058 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:16:17,499 INFO L415 sIntCurrentIteration]: We unified 488 AI predicates to 488 [2018-11-07 18:16:17,500 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:16:17,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:16:17,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [5] total 24 [2018-11-07 18:16:17,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:16:17,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 18:16:17,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 18:16:17,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2018-11-07 18:16:17,502 INFO L87 Difference]: Start difference. First operand 8363 states and 10040 transitions. Second operand 21 states. Received shutdown request... [2018-11-07 18:16:34,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 18:16:34,481 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:16:34,486 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:16:34,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:16:34 BoogieIcfgContainer [2018-11-07 18:16:34,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:16:34,488 INFO L168 Benchmark]: Toolchain (without parser) took 222068.10 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 18:16:34,489 INFO L168 Benchmark]: CDTParser took 0.15 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 18:16:34,489 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1284.01 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: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:16:34,490 INFO L168 Benchmark]: Boogie Procedure Inliner took 217.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -870.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 18:16:34,491 INFO L168 Benchmark]: Boogie Preprocessor took 151.97 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 18:16:34,491 INFO L168 Benchmark]: RCFGBuilder took 6851.72 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: 256.7 MB). Peak memory consumption was 256.7 MB. Max. memory is 7.1 GB. [2018-11-07 18:16:34,493 INFO L168 Benchmark]: TraceAbstraction took 213557.41 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -617.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 18:16:34,502 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 1284.01 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: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 217.29 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -870.7 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.97 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 6851.72 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: 256.7 MB). Peak memory consumption was 256.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213557.41 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -617.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was constructing difference of abstraction (8363states) and FLOYD_HOARE automaton (currently 27 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (3635 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 213.4s OverallTime, 10 OverallIterations, 4 TraceHistogramMax, 188.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2507 SDtfs, 29200 SDslu, 2121 SDs, 0 SdLazy, 32201 SolverSat, 3647 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.8s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2433 GetRequests, 2108 SyntacticMatches, 109 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2204 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8363occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.7s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.9977083615740977 AbsIntWeakeningRatio, 0.07772020725388601 AbsIntAvgWeakeningVarsNumRemoved, 11.22538860103627 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 1501 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 2708 NumberOfCodeBlocks, 2708 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2698 ConstructedInterpolants, 0 QuantifiedInterpolants, 5794873 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 1228/1676 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown