java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:17:35,331 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:17:35,333 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:17:35,348 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:17:35,348 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:17:35,349 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:17:35,351 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:17:35,353 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:17:35,354 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:17:35,355 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:17:35,356 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:17:35,356 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:17:35,357 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:17:35,358 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:17:35,360 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:17:35,360 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:17:35,361 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:17:35,364 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:17:35,366 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:17:35,367 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:17:35,368 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:17:35,370 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:17:35,372 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:17:35,372 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:17:35,373 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:17:35,373 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:17:35,374 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:17:35,375 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:17:35,376 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:17:35,381 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:17:35,381 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:17:35,382 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:17:35,382 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:17:35,382 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:17:35,384 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:17:35,386 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:17:35,386 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:17:35,418 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:17:35,418 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:17:35,419 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:17:35,419 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:17:35,420 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:17:35,421 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:17:35,421 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:17:35,421 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:17:35,421 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:17:35,421 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:17:35,421 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:17:35,422 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:17:35,423 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:17:35,424 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:17:35,424 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:17:35,424 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:17:35,424 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:17:35,424 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:17:35,425 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:17:35,425 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:17:35,425 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:17:35,425 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:17:35,425 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:17:35,426 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:17:35,428 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:17:35,428 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:17:35,428 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:17:35,428 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:17:35,429 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:17:35,429 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:17:35,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:17:35,429 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:17:35,429 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:17:35,430 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:17:35,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:17:35,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:17:35,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:17:35,527 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:17:35,527 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:17:35,528 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c [2018-10-24 21:17:35,595 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c4b33d94/674bf8ac2495488bbc881409126a6740/FLAG4ad70376e [2018-10-24 21:17:36,375 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:17:36,376 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label04_true-unreach-call.c [2018-10-24 21:17:36,409 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c4b33d94/674bf8ac2495488bbc881409126a6740/FLAG4ad70376e [2018-10-24 21:17:36,426 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c4b33d94/674bf8ac2495488bbc881409126a6740 [2018-10-24 21:17:36,439 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:17:36,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:17:36,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:17:36,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:17:36,447 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:17:36,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:17:36" (1/1) ... [2018-10-24 21:17:36,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3530b98d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:36, skipping insertion in model container [2018-10-24 21:17:36,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:17:36" (1/1) ... [2018-10-24 21:17:36,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:17:36,645 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:17:38,018 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:17:38,024 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:17:38,660 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:17:38,697 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:17:38,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38 WrapperNode [2018-10-24 21:17:38,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:17:38,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:17:38,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:17:38,699 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:17:38,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (1/1) ... [2018-10-24 21:17:38,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (1/1) ... [2018-10-24 21:17:39,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:17:39,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:17:39,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:17:39,242 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:17:39,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (1/1) ... [2018-10-24 21:17:39,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (1/1) ... [2018-10-24 21:17:39,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (1/1) ... [2018-10-24 21:17:39,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (1/1) ... [2018-10-24 21:17:39,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (1/1) ... [2018-10-24 21:17:39,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (1/1) ... [2018-10-24 21:17:39,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (1/1) ... [2018-10-24 21:17:39,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:17:39,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:17:39,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:17:39,536 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:17:39,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:17:39,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:17:39,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:17:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:17:39,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:17:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:17:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:17:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:17:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:17:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:17:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:17:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:17:39,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:17:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:17:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:17:51,602 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:17:51,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:17:51 BoogieIcfgContainer [2018-10-24 21:17:51,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:17:51,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:17:51,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:17:51,608 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:17:51,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:17:36" (1/3) ... [2018-10-24 21:17:51,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae90001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:17:51, skipping insertion in model container [2018-10-24 21:17:51,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:17:38" (2/3) ... [2018-10-24 21:17:51,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ae90001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:17:51, skipping insertion in model container [2018-10-24 21:17:51,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:17:51" (3/3) ... [2018-10-24 21:17:51,612 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label04_true-unreach-call.c [2018-10-24 21:17:51,622 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:17:51,632 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:17:51,651 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:17:51,711 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:17:51,712 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:17:51,712 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:17:51,712 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:17:51,712 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:17:51,712 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:17:51,713 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:17:51,713 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:17:51,772 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:17:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-24 21:17:51,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:17:51,785 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:17:51,788 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:17:51,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:17:51,795 INFO L82 PathProgramCache]: Analyzing trace with hash -629755477, now seen corresponding path program 1 times [2018-10-24 21:17:51,798 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:17:51,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:17:51,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:17:51,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:17:51,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:17:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:17:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:17:52,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:17:52,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:17:52,377 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:17:52,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:17:52,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:17:52,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:17:52,406 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:18:03,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:18:03,527 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:18:03,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:18:03,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-10-24 21:18:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:18:03,589 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:18:03,589 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:18:03,606 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:18:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:18:03,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:18:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:18:03,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-10-24 21:18:03,802 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 67 [2018-10-24 21:18:03,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:18:03,803 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-10-24 21:18:03,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:18:03,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-10-24 21:18:03,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 21:18:03,820 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:03,820 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:18:03,821 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:03,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:03,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1436302644, now seen corresponding path program 1 times [2018-10-24 21:18:03,822 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:03,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:03,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:03,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:03,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:18:04,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:04,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:18:04,381 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:04,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:18:04,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:18:04,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:18:04,384 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-10-24 21:18:20,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:18:20,577 INFO L93 Difference]: Finished difference Result 6336 states and 12138 transitions. [2018-10-24 21:18:20,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:18:20,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-24 21:18:20,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:18:20,616 INFO L225 Difference]: With dead ends: 6336 [2018-10-24 21:18:20,616 INFO L226 Difference]: Without dead ends: 4738 [2018-10-24 21:18:20,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:18:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4738 states. [2018-10-24 21:18:20,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4738 to 4703. [2018-10-24 21:18:20,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4703 states. [2018-10-24 21:18:20,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4703 states to 4703 states and 7682 transitions. [2018-10-24 21:18:20,773 INFO L78 Accepts]: Start accepts. Automaton has 4703 states and 7682 transitions. Word has length 145 [2018-10-24 21:18:20,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:18:20,773 INFO L481 AbstractCegarLoop]: Abstraction has 4703 states and 7682 transitions. [2018-10-24 21:18:20,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:18:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4703 states and 7682 transitions. [2018-10-24 21:18:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 21:18:20,780 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:20,780 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:18:20,781 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:20,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:20,781 INFO L82 PathProgramCache]: Analyzing trace with hash -659539728, now seen corresponding path program 1 times [2018-10-24 21:18:20,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:20,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:20,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:20,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:20,783 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:18:20,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:20,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:18:20,971 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:20,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:18:20,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:18:20,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:18:20,973 INFO L87 Difference]: Start difference. First operand 4703 states and 7682 transitions. Second operand 5 states. [2018-10-24 21:18:32,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:18:32,780 INFO L93 Difference]: Finished difference Result 14309 states and 23694 transitions. [2018-10-24 21:18:32,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:18:32,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-10-24 21:18:32,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:18:32,832 INFO L225 Difference]: With dead ends: 14309 [2018-10-24 21:18:32,832 INFO L226 Difference]: Without dead ends: 9612 [2018-10-24 21:18:32,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:18:32,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9612 states. [2018-10-24 21:18:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9612 to 9532. [2018-10-24 21:18:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9532 states. [2018-10-24 21:18:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 14374 transitions. [2018-10-24 21:18:33,102 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 14374 transitions. Word has length 147 [2018-10-24 21:18:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:18:33,103 INFO L481 AbstractCegarLoop]: Abstraction has 9532 states and 14374 transitions. [2018-10-24 21:18:33,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:18:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 14374 transitions. [2018-10-24 21:18:33,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 21:18:33,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:33,107 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:18:33,107 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:33,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:33,108 INFO L82 PathProgramCache]: Analyzing trace with hash -731114027, now seen corresponding path program 1 times [2018-10-24 21:18:33,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:33,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:33,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:33,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:33,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:18:33,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:33,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:18:33,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:33,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:18:33,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:18:33,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:18:33,334 INFO L87 Difference]: Start difference. First operand 9532 states and 14374 transitions. Second operand 6 states. [2018-10-24 21:18:50,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:18:50,813 INFO L93 Difference]: Finished difference Result 38119 states and 61201 transitions. [2018-10-24 21:18:50,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:18:50,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-24 21:18:50,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:18:50,981 INFO L225 Difference]: With dead ends: 38119 [2018-10-24 21:18:50,982 INFO L226 Difference]: Without dead ends: 28593 [2018-10-24 21:18:51,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:18:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28593 states. [2018-10-24 21:18:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28593 to 28537. [2018-10-24 21:18:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28537 states. [2018-10-24 21:18:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28537 states to 28537 states and 41799 transitions. [2018-10-24 21:18:51,850 INFO L78 Accepts]: Start accepts. Automaton has 28537 states and 41799 transitions. Word has length 158 [2018-10-24 21:18:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:18:51,852 INFO L481 AbstractCegarLoop]: Abstraction has 28537 states and 41799 transitions. [2018-10-24 21:18:51,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:18:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 28537 states and 41799 transitions. [2018-10-24 21:18:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-24 21:18:51,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:51,858 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:18:51,858 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:51,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:51,858 INFO L82 PathProgramCache]: Analyzing trace with hash -90858887, now seen corresponding path program 1 times [2018-10-24 21:18:51,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:51,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:51,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:51,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:51,860 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:52,198 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:18:52,621 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:18:52,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:52,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:18:52,622 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:52,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:18:52,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:18:52,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:18:52,623 INFO L87 Difference]: Start difference. First operand 28537 states and 41799 transitions. Second operand 6 states. [2018-10-24 21:19:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:04,482 INFO L93 Difference]: Finished difference Result 79351 states and 124048 transitions. [2018-10-24 21:19:04,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:19:04,482 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-10-24 21:19:04,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:04,716 INFO L225 Difference]: With dead ends: 79351 [2018-10-24 21:19:04,717 INFO L226 Difference]: Without dead ends: 50820 [2018-10-24 21:19:04,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:19:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50820 states. [2018-10-24 21:19:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50820 to 50663. [2018-10-24 21:19:06,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50663 states. [2018-10-24 21:19:06,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50663 states to 50663 states and 72662 transitions. [2018-10-24 21:19:06,456 INFO L78 Accepts]: Start accepts. Automaton has 50663 states and 72662 transitions. Word has length 192 [2018-10-24 21:19:06,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:06,456 INFO L481 AbstractCegarLoop]: Abstraction has 50663 states and 72662 transitions. [2018-10-24 21:19:06,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:19:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 50663 states and 72662 transitions. [2018-10-24 21:19:06,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-10-24 21:19:06,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:06,470 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:19:06,471 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:06,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1240874338, now seen corresponding path program 1 times [2018-10-24 21:19:06,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:06,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:06,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:06,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:06,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:06,731 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:19:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 120 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:19:06,875 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:19:06,875 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:19:06,876 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-10-24 21:19:06,878 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2303], [2305], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2516], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:19:06,952 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:19:06,953 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:19:10,653 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:19:11,143 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:19:11,145 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:19:11,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:11,169 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:19:14,093 INFO L232 lantSequenceWeakener]: Weakened 248 states. On average, predicates are now at 75.85% of their original sizes. [2018-10-24 21:19:14,093 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:19:14,630 INFO L413 sIntCurrentIteration]: We have 255 unified AI predicates [2018-10-24 21:19:14,630 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:19:14,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:19:14,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 21:19:14,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:19:14,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:19:14,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:19:14,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:19:14,633 INFO L87 Difference]: Start difference. First operand 50663 states and 72662 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 21:21:09,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:21:09,231 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:21:09,238 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:21:09,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:21:09 BoogieIcfgContainer [2018-10-24 21:21:09,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:21:09,239 INFO L168 Benchmark]: Toolchain (without parser) took 212799.86 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -929.5 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 21:21:09,241 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:21:09,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2255.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:21:09,242 INFO L168 Benchmark]: Boogie Procedure Inliner took 542.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:21:09,243 INFO L168 Benchmark]: Boogie Preprocessor took 293.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:21:09,244 INFO L168 Benchmark]: RCFGBuilder took 12067.72 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 188.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -203.8 MB). Peak memory consumption was 685.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:21:09,245 INFO L168 Benchmark]: TraceAbstraction took 197634.17 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 83.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 21:21:09,251 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2255.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 542.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 810.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 293.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12067.72 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 188.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -203.8 MB). Peak memory consumption was 685.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197634.17 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.4 GB in the beginning and 2.3 GB in the end (delta: 83.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (50663states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (26906 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 197.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 183.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1030 SDtfs, 15991 SDslu, 1055 SDs, 0 SdLazy, 29047 SolverSat, 5971 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 140.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 298 GetRequests, 262 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50663occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9961990950226244 AbsIntWeakeningRatio, 0.10588235294117647 AbsIntAvgWeakeningVarsNumRemoved, 1054.556862745098 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 328 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 965 NumberOfCodeBlocks, 965 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 959 ConstructedInterpolants, 0 QuantifiedInterpolants, 658562 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 365/440 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown