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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:21:17,542 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:21:17,546 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:21:17,561 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:21:17,562 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:21:17,563 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:21:17,564 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:21:17,566 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:21:17,568 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:21:17,569 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:21:17,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:21:17,571 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:21:17,572 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:21:17,573 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:21:17,574 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:21:17,575 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:21:17,576 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:21:17,578 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:21:17,580 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:21:17,585 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:21:17,590 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:21:17,591 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:21:17,594 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:21:17,594 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:21:17,594 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:21:17,599 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:21:17,601 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:21:17,603 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:21:17,604 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:21:17,606 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:21:17,610 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:21:17,611 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:21:17,611 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:21:17,611 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:21:17,614 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:21:17,615 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:21:17,615 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:21:17,649 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:21:17,649 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:21:17,650 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:21:17,650 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:21:17,651 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:21:17,651 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:21:17,651 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:21:17,652 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:21:17,652 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:21:17,652 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:21:17,652 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:21:17,652 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:21:17,652 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:21:17,653 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:21:17,654 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:21:17,654 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:21:17,654 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:21:17,655 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:21:17,655 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:21:17,655 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:21:17,655 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:21:17,655 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:21:17,656 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:21:17,656 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:21:17,656 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:21:17,656 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:21:17,657 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:21:17,657 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:21:17,657 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:21:17,657 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:21:17,657 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:21:17,658 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:21:17,658 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:21:17,658 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:21:17,658 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:21:17,658 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:21:17,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:21:17,732 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:21:17,736 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:21:17,738 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:21:17,738 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:21:17,739 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c [2018-11-07 06:21:17,825 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456ca5b39/962829f1bbb142439800f0fb87fc779c/FLAG12be24ff7 [2018-11-07 06:21:18,460 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:21:18,461 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label12_false-unreach-call_false-termination.c [2018-11-07 06:21:18,485 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456ca5b39/962829f1bbb142439800f0fb87fc779c/FLAG12be24ff7 [2018-11-07 06:21:18,508 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/456ca5b39/962829f1bbb142439800f0fb87fc779c [2018-11-07 06:21:18,523 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:21:18,526 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:21:18,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:21:18,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:21:18,531 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:21:18,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:21:18" (1/1) ... [2018-11-07 06:21:18,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ade47ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:18, skipping insertion in model container [2018-11-07 06:21:18,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:21:18" (1/1) ... [2018-11-07 06:21:18,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:21:18,644 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:21:19,189 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:21:19,201 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:21:19,405 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:21:19,421 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:21:19,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19 WrapperNode [2018-11-07 06:21:19,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:21:19,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:21:19,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:21:19,423 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:21:19,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (1/1) ... [2018-11-07 06:21:19,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (1/1) ... [2018-11-07 06:21:19,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:21:19,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:21:19,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:21:19,583 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:21:19,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (1/1) ... [2018-11-07 06:21:19,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (1/1) ... [2018-11-07 06:21:19,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (1/1) ... [2018-11-07 06:21:19,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (1/1) ... [2018-11-07 06:21:19,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (1/1) ... [2018-11-07 06:21:19,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (1/1) ... [2018-11-07 06:21:19,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (1/1) ... [2018-11-07 06:21:19,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:21:19,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:21:19,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:21:19,727 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:21:19,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (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 06:21:19,803 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:21:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:21:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:21:19,804 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:21:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:21:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:21:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:21:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:21:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:21:23,611 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:21:23,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:21:23 BoogieIcfgContainer [2018-11-07 06:21:23,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:21:23,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:21:23,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:21:23,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:21:23,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:21:18" (1/3) ... [2018-11-07 06:21:23,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123e6042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:21:23, skipping insertion in model container [2018-11-07 06:21:23,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:21:19" (2/3) ... [2018-11-07 06:21:23,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@123e6042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:21:23, skipping insertion in model container [2018-11-07 06:21:23,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:21:23" (3/3) ... [2018-11-07 06:21:23,623 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label12_false-unreach-call_false-termination.c [2018-11-07 06:21:23,632 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:21:23,640 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:21:23,655 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:21:23,693 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:21:23,693 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:21:23,693 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:21:23,694 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:21:23,694 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:21:23,694 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:21:23,694 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:21:23,694 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:21:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 06:21:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 06:21:23,744 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:21:23,745 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:21:23,748 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:21:23,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:21:23,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1289249233, now seen corresponding path program 1 times [2018-11-07 06:21:23,757 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:21:23,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:21:23,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:21:23,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:21:23,812 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:21:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:21:24,141 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:21:24,197 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 06:21:24,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:21:24,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:21:24,201 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:21:24,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:21:24,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:21:24,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:21:24,229 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 06:21:26,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:21:26,202 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 06:21:26,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:21:26,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-07 06:21:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:21:26,226 INFO L225 Difference]: With dead ends: 691 [2018-11-07 06:21:26,227 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 06:21:26,235 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 06:21:26,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 06:21:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 06:21:26,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 06:21:26,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 06:21:26,321 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 15 [2018-11-07 06:21:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:21:26,322 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 06:21:26,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:21:26,322 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 06:21:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-07 06:21:26,327 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:21:26,328 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:21:26,328 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:21:26,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:21:26,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1032198988, now seen corresponding path program 1 times [2018-11-07 06:21:26,329 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:21:26,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:21:26,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:21:26,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:21:26,331 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:21:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:21:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:21:26,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:21:26,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:21:26,744 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:21:26,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:21:26,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:21:26,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:21:26,749 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 06:21:30,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:21:30,400 INFO L93 Difference]: Finished difference Result 1587 states and 2933 transitions. [2018-11-07 06:21:30,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:21:30,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-11-07 06:21:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:21:30,412 INFO L225 Difference]: With dead ends: 1587 [2018-11-07 06:21:30,412 INFO L226 Difference]: Without dead ends: 1159 [2018-11-07 06:21:30,417 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 06:21:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2018-11-07 06:21:30,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1152. [2018-11-07 06:21:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2018-11-07 06:21:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1885 transitions. [2018-11-07 06:21:30,491 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1885 transitions. Word has length 85 [2018-11-07 06:21:30,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:21:30,492 INFO L480 AbstractCegarLoop]: Abstraction has 1152 states and 1885 transitions. [2018-11-07 06:21:30,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:21:30,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1885 transitions. [2018-11-07 06:21:30,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-11-07 06:21:30,515 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:21:30,515 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:21:30,516 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:21:30,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:21:30,516 INFO L82 PathProgramCache]: Analyzing trace with hash 273751564, now seen corresponding path program 1 times [2018-11-07 06:21:30,517 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:21:30,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:21:30,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:21:30,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:21:30,519 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:21:30,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:21:31,261 WARN L179 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 06:21:31,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:21:31,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:21:31,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:21:31,544 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:21:31,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:21:31,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:21:31,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:21:31,546 INFO L87 Difference]: Start difference. First operand 1152 states and 1885 transitions. Second operand 6 states. [2018-11-07 06:21:35,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:21:35,845 INFO L93 Difference]: Finished difference Result 3172 states and 5229 transitions. [2018-11-07 06:21:35,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 06:21:35,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-11-07 06:21:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:21:35,862 INFO L225 Difference]: With dead ends: 3172 [2018-11-07 06:21:35,862 INFO L226 Difference]: Without dead ends: 2026 [2018-11-07 06:21:35,870 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:21:35,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2018-11-07 06:21:35,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1916. [2018-11-07 06:21:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-07 06:21:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2950 transitions. [2018-11-07 06:21:35,936 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2950 transitions. Word has length 181 [2018-11-07 06:21:35,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:21:35,937 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2950 transitions. [2018-11-07 06:21:35,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:21:35,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2950 transitions. [2018-11-07 06:21:35,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-11-07 06:21:35,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:21:35,945 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:35,946 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:21:35,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:21:35,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1140820546, now seen corresponding path program 1 times [2018-11-07 06:21:35,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:21:35,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:21:35,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:21:35,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:21:35,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:21:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:21:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:21:36,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:21:36,278 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:21:36,279 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 253 with the following transitions: [2018-11-07 06:21:36,282 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:21:36,342 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:21:36,342 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:21:40,514 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:21:40,516 INFO L272 AbstractInterpreter]: Visited 171 different actions 171 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:21:40,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:21:40,531 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:21:43,215 INFO L227 lantSequenceWeakener]: Weakened 243 states. On average, predicates are now at 77.25% of their original sizes. [2018-11-07 06:21:43,216 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:21:43,386 INFO L415 sIntCurrentIteration]: We unified 251 AI predicates to 251 [2018-11-07 06:21:43,386 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:21:43,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:21:43,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 06:21:43,388 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:21:43,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:21:43,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:21:43,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:21:43,390 INFO L87 Difference]: Start difference. First operand 1916 states and 2950 transitions. Second operand 6 states. [2018-11-07 06:21:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:21:53,432 INFO L93 Difference]: Finished difference Result 4011 states and 6114 transitions. [2018-11-07 06:21:53,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:21:53,433 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 252 [2018-11-07 06:21:53,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:21:53,443 INFO L225 Difference]: With dead ends: 4011 [2018-11-07 06:21:53,444 INFO L226 Difference]: Without dead ends: 2101 [2018-11-07 06:21:53,452 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 252 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:21:53,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2018-11-07 06:21:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 2099. [2018-11-07 06:21:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2018-11-07 06:21:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3141 transitions. [2018-11-07 06:21:53,509 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3141 transitions. Word has length 252 [2018-11-07 06:21:53,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:21:53,510 INFO L480 AbstractCegarLoop]: Abstraction has 2099 states and 3141 transitions. [2018-11-07 06:21:53,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:21:53,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3141 transitions. [2018-11-07 06:21:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-07 06:21:53,518 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:21:53,518 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:21:53,519 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:21:53,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:21:53,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1464242370, now seen corresponding path program 1 times [2018-11-07 06:21:53,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:21:53,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:21:53,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:21:53,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:21:53,521 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:21:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:21:54,086 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:21:54,287 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 06:21:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:21:55,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:21:55,069 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:21:55,070 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 267 with the following transitions: [2018-11-07 06:21:55,070 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:21:55,078 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:21:55,079 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:21:58,308 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:21:58,309 INFO L272 AbstractInterpreter]: Visited 174 different actions 341 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:21:58,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:21:58,322 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:22:00,209 INFO L227 lantSequenceWeakener]: Weakened 263 states. On average, predicates are now at 77.29% of their original sizes. [2018-11-07 06:22:00,209 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:22:00,604 INFO L415 sIntCurrentIteration]: We unified 265 AI predicates to 265 [2018-11-07 06:22:00,604 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:22:00,604 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:22:00,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-07 06:22:00,604 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:22:00,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:22:00,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:22:00,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:22:00,606 INFO L87 Difference]: Start difference. First operand 2099 states and 3141 transitions. Second operand 10 states. [2018-11-07 06:23:00,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:00,962 INFO L93 Difference]: Finished difference Result 4529 states and 7081 transitions. [2018-11-07 06:23:00,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 06:23:00,962 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 266 [2018-11-07 06:23:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:00,975 INFO L225 Difference]: With dead ends: 4529 [2018-11-07 06:23:00,975 INFO L226 Difference]: Without dead ends: 2808 [2018-11-07 06:23:00,983 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 274 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:23:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2808 states. [2018-11-07 06:23:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2808 to 2805. [2018-11-07 06:23:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2805 states. [2018-11-07 06:23:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 3917 transitions. [2018-11-07 06:23:01,055 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 3917 transitions. Word has length 266 [2018-11-07 06:23:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:01,056 INFO L480 AbstractCegarLoop]: Abstraction has 2805 states and 3917 transitions. [2018-11-07 06:23:01,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:23:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 3917 transitions. [2018-11-07 06:23:01,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-11-07 06:23:01,068 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:01,068 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:01,068 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:01,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:01,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1648648436, now seen corresponding path program 1 times [2018-11-07 06:23:01,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:01,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:01,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:01,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:01,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:01,368 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 06:23:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 98 proven. 126 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 06:23:01,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:23:01,992 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:23:01,993 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 372 with the following transitions: [2018-11-07 06:23:02,000 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [530], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:23:02,010 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:23:02,010 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:23:05,808 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:23:05,809 INFO L272 AbstractInterpreter]: Visited 175 different actions 344 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:23:05,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:05,817 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:23:07,788 INFO L227 lantSequenceWeakener]: Weakened 368 states. On average, predicates are now at 77.33% of their original sizes. [2018-11-07 06:23:07,789 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:23:07,971 INFO L415 sIntCurrentIteration]: We unified 370 AI predicates to 370 [2018-11-07 06:23:07,972 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:23:07,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:23:07,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 06:23:07,972 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:07,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:23:07,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:23:07,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:23:07,974 INFO L87 Difference]: Start difference. First operand 2805 states and 3917 transitions. Second operand 10 states. [2018-11-07 06:23:39,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:39,023 INFO L93 Difference]: Finished difference Result 5420 states and 7639 transitions. [2018-11-07 06:23:39,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 06:23:39,023 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 371 [2018-11-07 06:23:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:39,035 INFO L225 Difference]: With dead ends: 5420 [2018-11-07 06:23:39,035 INFO L226 Difference]: Without dead ends: 2804 [2018-11-07 06:23:39,043 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 378 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:23:39,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2018-11-07 06:23:39,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2799. [2018-11-07 06:23:39,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2799 states. [2018-11-07 06:23:39,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3888 transitions. [2018-11-07 06:23:39,111 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3888 transitions. Word has length 371 [2018-11-07 06:23:39,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:39,111 INFO L480 AbstractCegarLoop]: Abstraction has 2799 states and 3888 transitions. [2018-11-07 06:23:39,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:23:39,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3888 transitions. [2018-11-07 06:23:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-11-07 06:23:39,124 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:39,124 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:23:39,125 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:39,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:39,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2102351971, now seen corresponding path program 1 times [2018-11-07 06:23:39,125 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:39,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:39,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:39,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:39,126 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:39,776 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 23 [2018-11-07 06:23:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 231 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:40,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:23:40,541 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:23:40,541 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 403 with the following transitions: [2018-11-07 06:23:40,541 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:23:40,545 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:23:40,545 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:23:48,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:23:48,196 INFO L272 AbstractInterpreter]: Visited 175 different actions 524 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 06:23:48,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:48,202 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:23:49,251 INFO L227 lantSequenceWeakener]: Weakened 399 states. On average, predicates are now at 79.98% of their original sizes. [2018-11-07 06:23:49,251 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:23:49,318 INFO L415 sIntCurrentIteration]: We unified 401 AI predicates to 401 [2018-11-07 06:23:49,318 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:23:49,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:23:49,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2018-11-07 06:23:49,318 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:49,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:23:49,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:23:49,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:23:49,320 INFO L87 Difference]: Start difference. First operand 2799 states and 3888 transitions. Second operand 9 states. [2018-11-07 06:24:08,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:08,137 INFO L93 Difference]: Finished difference Result 5875 states and 8543 transitions. [2018-11-07 06:24:08,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 06:24:08,137 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 402 [2018-11-07 06:24:08,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:08,151 INFO L225 Difference]: With dead ends: 5875 [2018-11-07 06:24:08,151 INFO L226 Difference]: Without dead ends: 3450 [2018-11-07 06:24:08,159 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 408 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 06:24:08,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2018-11-07 06:24:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 3425. [2018-11-07 06:24:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3425 states. [2018-11-07 06:24:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3425 states to 3425 states and 4678 transitions. [2018-11-07 06:24:08,233 INFO L78 Accepts]: Start accepts. Automaton has 3425 states and 4678 transitions. Word has length 402 [2018-11-07 06:24:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:08,234 INFO L480 AbstractCegarLoop]: Abstraction has 3425 states and 4678 transitions. [2018-11-07 06:24:08,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:24:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3425 states and 4678 transitions. [2018-11-07 06:24:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-11-07 06:24:08,244 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:08,245 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2018-11-07 06:24:08,245 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:08,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:08,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1630045533, now seen corresponding path program 1 times [2018-11-07 06:24:08,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:08,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:08,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:08,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:08,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 125 proven. 181 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-11-07 06:24:08,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:08,813 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:08,813 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 452 with the following transitions: [2018-11-07 06:24:08,814 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:08,817 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:08,817 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:14,246 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:24:14,246 INFO L272 AbstractInterpreter]: Visited 177 different actions 711 times. Merged at 9 different actions 39 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:24:14,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:14,262 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:24:14,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:14,262 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:24:14,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:14,272 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:24:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:14,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:24:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 441 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 06:24:14,891 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:24:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 125 proven. 181 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2018-11-07 06:24:15,616 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:24:15,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 06:24:15,616 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:24:15,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:24:15,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:24:15,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:24:15,620 INFO L87 Difference]: Start difference. First operand 3425 states and 4678 transitions. Second operand 9 states. [2018-11-07 06:24:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:22,281 INFO L93 Difference]: Finished difference Result 7771 states and 11363 transitions. [2018-11-07 06:24:22,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 06:24:22,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 451 [2018-11-07 06:24:22,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:22,304 INFO L225 Difference]: With dead ends: 7771 [2018-11-07 06:24:22,305 INFO L226 Difference]: Without dead ends: 4351 [2018-11-07 06:24:22,325 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 919 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2018-11-07 06:24:22,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2018-11-07 06:24:22,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3699. [2018-11-07 06:24:22,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3699 states. [2018-11-07 06:24:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 4887 transitions. [2018-11-07 06:24:22,436 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 4887 transitions. Word has length 451 [2018-11-07 06:24:22,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:22,437 INFO L480 AbstractCegarLoop]: Abstraction has 3699 states and 4887 transitions. [2018-11-07 06:24:22,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:24:22,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 4887 transitions. [2018-11-07 06:24:22,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-11-07 06:24:22,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:22,447 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 06:24:22,448 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:22,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:22,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1182834699, now seen corresponding path program 1 times [2018-11-07 06:24:22,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:22,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:22,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:22,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:22,450 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:22,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:23,004 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 06:24:23,871 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 06:24:24,369 WARN L179 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 06:24:25,179 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 336 proven. 175 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 06:24:25,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:25,180 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:25,180 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 476 with the following transitions: [2018-11-07 06:24:25,180 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:25,185 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:25,185 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:34,767 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:24:34,767 INFO L272 AbstractInterpreter]: Visited 177 different actions 702 times. Merged at 8 different actions 30 times. Never widened. Found 7 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:24:34,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:34,775 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:24:34,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:34,775 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:24:34,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:34,787 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:24:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:34,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:24:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-11-07 06:24:35,601 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:24:35,724 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 06:24:36,057 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 06:24:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 330 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-11-07 06:24:36,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:24:36,482 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:24:36,482 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:24:36,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:24:36,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:24:36,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:24:36,484 INFO L87 Difference]: Start difference. First operand 3699 states and 4887 transitions. Second operand 17 states. [2018-11-07 06:24:37,952 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-11-07 06:24:43,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:43,971 INFO L93 Difference]: Finished difference Result 8154 states and 11182 transitions. [2018-11-07 06:24:43,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 06:24:43,971 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 475 [2018-11-07 06:24:43,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:43,988 INFO L225 Difference]: With dead ends: 8154 [2018-11-07 06:24:43,988 INFO L226 Difference]: Without dead ends: 3708 [2018-11-07 06:24:44,011 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1008 GetRequests, 961 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 06:24:44,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2018-11-07 06:24:44,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 3517. [2018-11-07 06:24:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3517 states. [2018-11-07 06:24:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4296 transitions. [2018-11-07 06:24:44,109 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4296 transitions. Word has length 475 [2018-11-07 06:24:44,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:44,110 INFO L480 AbstractCegarLoop]: Abstraction has 3517 states and 4296 transitions. [2018-11-07 06:24:44,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:24:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4296 transitions. [2018-11-07 06:24:44,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-11-07 06:24:44,121 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:44,122 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 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 06:24:44,122 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:44,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:44,122 INFO L82 PathProgramCache]: Analyzing trace with hash 2023087572, now seen corresponding path program 1 times [2018-11-07 06:24:44,122 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:44,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:44,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:44,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:44,124 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 266 proven. 375 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 06:24:45,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:45,518 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:45,518 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 583 with the following transitions: [2018-11-07 06:24:45,519 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [21], [23], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:45,521 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:45,521 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:54,609 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:24:54,609 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:24:54,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:54,618 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:24:54,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:54,618 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:24:54,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:54,627 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:24:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:54,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:24:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 632 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-11-07 06:24:55,143 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:24:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 264 proven. 165 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-07 06:24:55,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:24:55,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-07 06:24:55,771 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:24:55,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:24:55,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:24:55,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:24:55,773 INFO L87 Difference]: Start difference. First operand 3517 states and 4296 transitions. Second operand 17 states. [2018-11-07 06:24:58,244 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2018-11-07 06:24:59,550 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2018-11-07 06:25:00,668 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-11-07 06:25:01,092 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2018-11-07 06:25:01,994 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-11-07 06:25:02,490 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-11-07 06:25:05,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:05,050 INFO L93 Difference]: Finished difference Result 7985 states and 10418 transitions. [2018-11-07 06:25:05,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-07 06:25:05,050 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 582 [2018-11-07 06:25:05,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:05,078 INFO L225 Difference]: With dead ends: 7985 [2018-11-07 06:25:05,078 INFO L226 Difference]: Without dead ends: 4842 [2018-11-07 06:25:05,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1194 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=842, Invalid=3190, Unknown=0, NotChecked=0, Total=4032 [2018-11-07 06:25:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2018-11-07 06:25:05,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4700. [2018-11-07 06:25:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-11-07 06:25:05,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 5631 transitions. [2018-11-07 06:25:05,229 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 5631 transitions. Word has length 582 [2018-11-07 06:25:05,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:05,230 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 5631 transitions. [2018-11-07 06:25:05,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:25:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 5631 transitions. [2018-11-07 06:25:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 694 [2018-11-07 06:25:05,246 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:05,246 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:25:05,247 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:05,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash 574896024, now seen corresponding path program 2 times [2018-11-07 06:25:05,247 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:05,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:05,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:05,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:05,249 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 391 proven. 165 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-11-07 06:25:06,194 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:06,195 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:06,195 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 06:25:06,195 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 06:25:06,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:06,195 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:25:06,204 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 06:25:06,204 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 06:25:06,274 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-07 06:25:06,274 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 06:25:06,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:25:11,032 WARN L179 SmtUtils]: Spent 4.39 s on a formula simplification. DAG size of input: 530 DAG size of output: 37 [2018-11-07 06:25:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2018-11-07 06:25:11,312 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-11-07 06:25:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2018-11-07 06:25:11,770 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:25:11,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-11-07 06:25:11,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:25:11,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:25:11,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:25:11,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:25:11,772 INFO L87 Difference]: Start difference. First operand 4700 states and 5631 transitions. Second operand 3 states. [2018-11-07 06:25:11,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 06:25:11,774 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 06:25:11,779 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 06:25:11,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:25:11 BoogieIcfgContainer [2018-11-07 06:25:11,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 06:25:11,780 INFO L168 Benchmark]: Toolchain (without parser) took 233256.25 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 702.4 MB. Max. memory is 7.1 GB. [2018-11-07 06:25:11,781 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 06:25:11,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 895.46 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-11-07 06:25:11,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 159.69 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2018-11-07 06:25:11,784 INFO L168 Benchmark]: Boogie Preprocessor took 140.29 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 06:25:11,784 INFO L168 Benchmark]: RCFGBuilder took 3889.45 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 118.2 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. [2018-11-07 06:25:11,785 INFO L168 Benchmark]: TraceAbstraction took 228165.48 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 627.7 MB. Max. memory is 7.1 GB. [2018-11-07 06:25:11,789 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 895.46 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 159.69 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.29 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3889.45 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 118.2 MB). Peak memory consumption was 118.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228165.48 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 627.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 28). Cancelled while BasicCegarLoop was constructing difference of abstraction (4700states) and FLOYD_HOARE automaton (currently 2 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 228.0s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 153.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1518 SDtfs, 16500 SDslu, 2361 SDs, 0 SdLazy, 23354 SolverSat, 4446 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 118.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 5945 GetRequests, 5724 SyntacticMatches, 10 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 16.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4700occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 43.1s AbstIntTime, 7 AbstIntIterations, 4 AbstIntStrong, 0.9973873036178017 AbsIntWeakeningRatio, 0.09013209013209013 AbsIntAvgWeakeningVarsNumRemoved, 16.035742035742036 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 1137 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 5974 NumberOfCodeBlocks, 5462 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8156 ConstructedInterpolants, 11 QuantifiedInterpolants, 21170891 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2605 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 8488/10056 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown