java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:49:26,400 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:49:26,403 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:49:26,415 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:49:26,415 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:49:26,416 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:49:26,418 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:49:26,419 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:49:26,421 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:49:26,422 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:49:26,423 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:49:26,423 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:49:26,424 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:49:26,425 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:49:26,426 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:49:26,427 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:49:26,428 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:49:26,430 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:49:26,432 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:49:26,434 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:49:26,435 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:49:26,439 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:49:26,442 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 01:49:26,455 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-25 01:49:26,455 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-25 01:49:26,456 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-25 01:49:26,457 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-25 01:49:26,457 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:49:26,472 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:49:26,473 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:49:26,473 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:49:26,474 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:49:26,474 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:49:26,474 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:49:26,474 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:49:26,474 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:49:26,475 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:49:26,475 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:49:26,475 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:49:26,475 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:49:26,475 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:49:26,476 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:49:26,476 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:49:26,476 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:49:26,477 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:49:26,477 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:49:26,477 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:49:26,477 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:49:26,477 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:49:26,478 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:49:26,478 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:49:26,478 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:49:26,478 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:49:26,478 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:49:26,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:49:26,479 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:49:26,479 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:49:26,479 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:49:26,479 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:49:26,480 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:49:26,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:49:26,480 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:49:26,480 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:49:26,480 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:49:26,532 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:49:26,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:49:26,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:49:26,551 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:49:26,551 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:49:26,552 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-10-25 01:49:26,611 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c32f6950/4e68bcefcaef4687ad25994d712e40d8/FLAG6355c14d7 [2018-10-25 01:49:27,278 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:49:27,279 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label36_true-unreach-call.c [2018-10-25 01:49:27,301 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c32f6950/4e68bcefcaef4687ad25994d712e40d8/FLAG6355c14d7 [2018-10-25 01:49:27,318 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5c32f6950/4e68bcefcaef4687ad25994d712e40d8 [2018-10-25 01:49:27,330 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:49:27,332 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:49:27,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:49:27,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:49:27,337 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:49:27,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:49:27" (1/1) ... [2018-10-25 01:49:27,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6628d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:27, skipping insertion in model container [2018-10-25 01:49:27,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:49:27" (1/1) ... [2018-10-25 01:49:27,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:49:27,451 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:49:28,348 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:49:28,353 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:49:28,663 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:49:28,686 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:49:28,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28 WrapperNode [2018-10-25 01:49:28,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:49:28,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:49:28,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:49:28,689 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:49:28,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (1/1) ... [2018-10-25 01:49:28,754 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (1/1) ... [2018-10-25 01:49:29,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:49:29,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:49:29,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:49:29,099 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:49:29,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (1/1) ... [2018-10-25 01:49:29,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (1/1) ... [2018-10-25 01:49:29,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (1/1) ... [2018-10-25 01:49:29,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (1/1) ... [2018-10-25 01:49:29,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (1/1) ... [2018-10-25 01:49:29,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (1/1) ... [2018-10-25 01:49:29,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (1/1) ... [2018-10-25 01:49:29,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:49:29,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:49:29,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:49:29,342 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:49:29,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (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 [2018-10-25 01:49:29,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:49:29,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:49:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 01:49:29,415 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 01:49:29,415 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:49:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:49:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:49:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:49:29,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:49:29,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:49:37,918 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:49:37,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:49:37 BoogieIcfgContainer [2018-10-25 01:49:37,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:49:37,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:49:37,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:49:37,924 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:49:37,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:49:27" (1/3) ... [2018-10-25 01:49:37,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce70ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:49:37, skipping insertion in model container [2018-10-25 01:49:37,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:49:28" (2/3) ... [2018-10-25 01:49:37,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ce70ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:49:37, skipping insertion in model container [2018-10-25 01:49:37,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:49:37" (3/3) ... [2018-10-25 01:49:37,928 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label36_true-unreach-call.c [2018-10-25 01:49:37,938 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:49:37,947 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:49:37,962 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:49:38,006 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:49:38,006 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:49:38,007 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:49:38,007 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:49:38,007 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:49:38,007 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:49:38,007 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:49:38,008 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:49:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-25 01:49:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-25 01:49:38,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:49:38,059 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:49:38,061 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:49:38,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:38,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1645176452, now seen corresponding path program 1 times [2018-10-25 01:49:38,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:49:38,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:38,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:38,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:38,128 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:49:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:38,668 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-25 01:49:38,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:49:38,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:49:38,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:49:38,777 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:49:38,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:49:38,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:49:38,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:49:38,804 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-25 01:49:48,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:49:48,676 INFO L93 Difference]: Finished difference Result 1510 states and 2773 transitions. [2018-10-25 01:49:48,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:49:48,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-10-25 01:49:48,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:49:48,710 INFO L225 Difference]: With dead ends: 1510 [2018-10-25 01:49:48,710 INFO L226 Difference]: Without dead ends: 1066 [2018-10-25 01:49:48,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:49:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2018-10-25 01:49:48,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1064. [2018-10-25 01:49:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1064 states. [2018-10-25 01:49:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1590 transitions. [2018-10-25 01:49:48,835 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1590 transitions. Word has length 68 [2018-10-25 01:49:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:49:48,836 INFO L481 AbstractCegarLoop]: Abstraction has 1064 states and 1590 transitions. [2018-10-25 01:49:48,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:49:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1590 transitions. [2018-10-25 01:49:48,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-25 01:49:48,845 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:49:48,846 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:49:48,846 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:49:48,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:48,846 INFO L82 PathProgramCache]: Analyzing trace with hash 880545895, now seen corresponding path program 1 times [2018-10-25 01:49:48,847 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:49:48,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:48,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:48,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:48,849 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:49:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:49:49,080 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:49:49,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:49:49,081 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:49:49,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:49:49,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:49:49,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:49:49,084 INFO L87 Difference]: Start difference. First operand 1064 states and 1590 transitions. Second operand 4 states. [2018-10-25 01:49:55,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:49:55,840 INFO L93 Difference]: Finished difference Result 3981 states and 6113 transitions. [2018-10-25 01:49:55,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:49:55,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2018-10-25 01:49:55,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:49:55,866 INFO L225 Difference]: With dead ends: 3981 [2018-10-25 01:49:55,866 INFO L226 Difference]: Without dead ends: 2923 [2018-10-25 01:49:55,877 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:49:55,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2018-10-25 01:49:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2921. [2018-10-25 01:49:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2921 states. [2018-10-25 01:49:56,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4008 transitions. [2018-10-25 01:49:56,023 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4008 transitions. Word has length 138 [2018-10-25 01:49:56,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:49:56,024 INFO L481 AbstractCegarLoop]: Abstraction has 2921 states and 4008 transitions. [2018-10-25 01:49:56,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:49:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4008 transitions. [2018-10-25 01:49:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-25 01:49:56,041 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:49:56,042 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, 3, 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] [2018-10-25 01:49:56,042 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:49:56,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:56,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1873397843, now seen corresponding path program 1 times [2018-10-25 01:49:56,043 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:49:56,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:56,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:49:56,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:49:56,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:49:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:49:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-25 01:49:56,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:49:56,877 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:49:56,878 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-10-25 01:49:56,880 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:49:56,926 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:49:56,926 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:49:58,258 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:49:58,260 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-25 01:49:58,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:49:58,303 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:49:59,311 INFO L232 lantSequenceWeakener]: Weakened 245 states. On average, predicates are now at 78.71% of their original sizes. [2018-10-25 01:49:59,311 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:50:00,075 INFO L413 sIntCurrentIteration]: We have 247 unified AI predicates [2018-10-25 01:50:00,076 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:50:00,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:50:00,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-25 01:50:00,077 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:50:00,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:50:00,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:50:00,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:50:00,079 INFO L87 Difference]: Start difference. First operand 2921 states and 4008 transitions. Second operand 9 states. [2018-10-25 01:52:38,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:52:38,672 INFO L93 Difference]: Finished difference Result 6778 states and 9083 transitions. [2018-10-25 01:52:38,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:52:38,673 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 248 [2018-10-25 01:52:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:52:38,694 INFO L225 Difference]: With dead ends: 6778 [2018-10-25 01:52:38,694 INFO L226 Difference]: Without dead ends: 3863 [2018-10-25 01:52:38,706 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 253 GetRequests, 184 SyntacticMatches, 56 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-25 01:52:38,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3863 states. [2018-10-25 01:52:38,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3863 to 3860. [2018-10-25 01:52:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3860 states. [2018-10-25 01:52:38,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3860 states to 3860 states and 5001 transitions. [2018-10-25 01:52:38,799 INFO L78 Accepts]: Start accepts. Automaton has 3860 states and 5001 transitions. Word has length 248 [2018-10-25 01:52:38,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:52:38,800 INFO L481 AbstractCegarLoop]: Abstraction has 3860 states and 5001 transitions. [2018-10-25 01:52:38,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:52:38,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3860 states and 5001 transitions. [2018-10-25 01:52:38,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-10-25 01:52:38,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:52:38,814 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:52:38,815 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:52:38,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:52:38,815 INFO L82 PathProgramCache]: Analyzing trace with hash -774600174, now seen corresponding path program 1 times [2018-10-25 01:52:38,815 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:52:38,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:52:38,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:52:38,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:52:38,817 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:52:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:52:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:52:39,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:52:39,340 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:52:39,340 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 450 with the following transitions: [2018-10-25 01:52:39,341 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:52:39,351 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:52:39,351 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:52:40,289 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:52:40,290 INFO L272 AbstractInterpreter]: Visited 211 different actions 831 times. Merged at 7 different actions 23 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-25 01:52:40,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:52:40,306 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:52:40,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:52:40,307 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:52:40,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:52:40,316 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:52:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:52:40,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:52:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:52:40,929 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:52:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 352 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-25 01:52:41,933 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:52:41,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-10-25 01:52:41,934 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:52:41,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-25 01:52:41,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-25 01:52:41,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:52:41,937 INFO L87 Difference]: Start difference. First operand 3860 states and 5001 transitions. Second operand 8 states. [2018-10-25 01:52:43,046 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-25 01:53:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:53:06,879 INFO L93 Difference]: Finished difference Result 15288 states and 21411 transitions. [2018-10-25 01:53:06,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-25 01:53:06,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 449 [2018-10-25 01:53:06,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:53:06,947 INFO L225 Difference]: With dead ends: 15288 [2018-10-25 01:53:06,948 INFO L226 Difference]: Without dead ends: 11742 [2018-10-25 01:53:06,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 921 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=356, Invalid=1366, Unknown=0, NotChecked=0, Total=1722 [2018-10-25 01:53:07,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11742 states. [2018-10-25 01:53:07,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11742 to 11614. [2018-10-25 01:53:07,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11614 states. [2018-10-25 01:53:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11614 states to 11614 states and 14330 transitions. [2018-10-25 01:53:07,330 INFO L78 Accepts]: Start accepts. Automaton has 11614 states and 14330 transitions. Word has length 449 [2018-10-25 01:53:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:53:07,331 INFO L481 AbstractCegarLoop]: Abstraction has 11614 states and 14330 transitions. [2018-10-25 01:53:07,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-25 01:53:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 11614 states and 14330 transitions. [2018-10-25 01:53:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-10-25 01:53:07,353 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:53:07,354 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:53:07,354 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:53:07,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:53:07,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1824846397, now seen corresponding path program 1 times [2018-10-25 01:53:07,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:53:07,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:53:07,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:53:07,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:53:07,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:53:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:53:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 185 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-25 01:53:08,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:53:08,040 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:53:08,040 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 498 with the following transitions: [2018-10-25 01:53:08,041 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:53:08,059 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:53:08,059 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:53:10,918 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:53:10,919 INFO L272 AbstractInterpreter]: Visited 285 different actions 850 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-25 01:53:10,952 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:53:10,952 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:53:10,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:53:10,952 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:53:10,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:53:10,964 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:53:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:53:11,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:53:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 185 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-25 01:53:11,520 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:53:11,772 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-25 01:53:13,289 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-25 01:53:13,311 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 01:53:13,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-10-25 01:53:13,311 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:53:13,312 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 01:53:13,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 01:53:13,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 01:53:13,313 INFO L87 Difference]: Start difference. First operand 11614 states and 14330 transitions. Second operand 5 states. [2018-10-25 01:53:17,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:53:17,482 INFO L93 Difference]: Finished difference Result 23690 states and 30491 transitions. [2018-10-25 01:53:17,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:53:17,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 497 [2018-10-25 01:53:17,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:53:17,546 INFO L225 Difference]: With dead ends: 23690 [2018-10-25 01:53:17,547 INFO L226 Difference]: Without dead ends: 14141 [2018-10-25 01:53:17,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 993 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 01:53:17,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14141 states. [2018-10-25 01:53:17,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14141 to 14136. [2018-10-25 01:53:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14136 states. [2018-10-25 01:53:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14136 states to 14136 states and 16938 transitions. [2018-10-25 01:53:17,898 INFO L78 Accepts]: Start accepts. Automaton has 14136 states and 16938 transitions. Word has length 497 [2018-10-25 01:53:17,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:53:17,899 INFO L481 AbstractCegarLoop]: Abstraction has 14136 states and 16938 transitions. [2018-10-25 01:53:17,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 01:53:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 14136 states and 16938 transitions. [2018-10-25 01:53:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2018-10-25 01:53:17,924 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:53:17,924 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:53:17,925 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:53:17,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:53:17,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1764289390, now seen corresponding path program 1 times [2018-10-25 01:53:17,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:53:17,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:53:17,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:53:17,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:53:17,927 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:53:18,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:53:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 271 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-25 01:53:18,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:53:18,965 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:53:18,965 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 514 with the following transitions: [2018-10-25 01:53:18,966 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [517], [519], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [636], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-25 01:53:18,974 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:53:18,974 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-25 01:53:28,047 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-25 01:53:28,048 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-25 01:53:28,048 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-25 01:53:28,048 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:53:28,048 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:53:28,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:53:28,057 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:53:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:53:28,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:53:28,233 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-25 01:53:28,434 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:53:28,434 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:53:28,440 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:53:28,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:53:28 BoogieIcfgContainer [2018-10-25 01:53:28,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:53:28,442 INFO L168 Benchmark]: Toolchain (without parser) took 241111.27 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 971.7 MB in the end (delta: 458.5 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-10-25 01:53:28,443 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-25 01:53:28,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1354.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:53:28,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 409.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:53:28,446 INFO L168 Benchmark]: Boogie Preprocessor took 242.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:53:28,446 INFO L168 Benchmark]: RCFGBuilder took 8577.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 305.7 MB). Peak memory consumption was 305.7 MB. Max. memory is 7.1 GB. [2018-10-25 01:53:28,447 INFO L168 Benchmark]: TraceAbstraction took 230520.76 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 971.7 MB in the end (delta: 908.5 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-25 01:53:28,453 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1354.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 409.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -875.6 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 242.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8577.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 305.7 MB). Peak memory consumption was 305.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230520.76 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 971.7 MB in the end (delta: 908.5 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was analyzing trace of length 514 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 230.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 204.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1597 SDtfs, 7595 SDslu, 1587 SDs, 0 SdLazy, 16533 SolverSat, 3506 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 171.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2230 GetRequests, 2105 SyntacticMatches, 61 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14136occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.3s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.9968685054557631 AbsIntWeakeningRatio, 0.10526315789473684 AbsIntAvgWeakeningVarsNumRemoved, 0.757085020242915 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 140 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 2346 NumberOfCodeBlocks, 2346 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 3283 ConstructedInterpolants, 0 QuantifiedInterpolants, 5032790 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1388 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 2738/2829 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown