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/Problem02_label47_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:28:22,318 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:28:22,321 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:28:22,336 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:28:22,336 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:28:22,338 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:28:22,339 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:28:22,341 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:28:22,342 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:28:22,343 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:28:22,344 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:28:22,344 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:28:22,345 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:28:22,346 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:28:22,347 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:28:22,348 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:28:22,349 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:28:22,351 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:28:22,353 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:28:22,355 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:28:22,356 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:28:22,357 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:28:22,360 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:28:22,374 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 [2018-10-23 23:28:22,400 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:28:22,400 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:28:22,401 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:28:22,401 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:28:22,402 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:28:22,402 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:28:22,402 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:28:22,402 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:28:22,402 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:28:22,403 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:28:22,403 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:28:22,403 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:28:22,404 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:28:22,404 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:28:22,404 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:28:22,404 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:28:22,404 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:28:22,404 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:28:22,405 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:28:22,405 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:28:22,405 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:28:22,405 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:28:22,405 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:28:22,406 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:28:22,406 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:28:22,406 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:28:22,406 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:28:22,406 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:28:22,407 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:28:22,407 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:28:22,407 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:28:22,407 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:28:22,407 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:28:22,408 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:28:22,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:28:22,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:28:22,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:28:22,495 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:28:22,496 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:28:22,497 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label47_true-unreach-call_false-termination.c [2018-10-23 23:28:22,577 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b9186c8a/da97760212ad4326bc900aee2219e42a/FLAG6a25bafab [2018-10-23 23:28:23,191 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:28:23,192 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label47_true-unreach-call_false-termination.c [2018-10-23 23:28:23,210 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b9186c8a/da97760212ad4326bc900aee2219e42a/FLAG6a25bafab [2018-10-23 23:28:23,227 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0b9186c8a/da97760212ad4326bc900aee2219e42a [2018-10-23 23:28:23,239 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:28:23,241 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:28:23,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:28:23,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:28:23,247 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:28:23,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:23,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86a12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23, skipping insertion in model container [2018-10-23 23:28:23,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:23,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:28:23,317 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:28:23,724 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:28:23,732 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:28:23,843 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:28:23,877 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:28:23,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23 WrapperNode [2018-10-23 23:28:23,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:28:23,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:28:23,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:28:23,879 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:28:23,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:23,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:24,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:28:24,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:28:24,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:28:24,088 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:28:24,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:24,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:24,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:24,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:24,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:24,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:24,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (1/1) ... [2018-10-23 23:28:24,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:28:24,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:28:24,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:28:24,159 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:28:24,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (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 [2018-10-23 23:28:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:28:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:28:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:28:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:28:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:28:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:28:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:28:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:28:27,617 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:28:27,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:28:27 BoogieIcfgContainer [2018-10-23 23:28:27,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:28:27,620 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:28:27,620 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:28:27,625 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:28:27,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:28:23" (1/3) ... [2018-10-23 23:28:27,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0915ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:28:27, skipping insertion in model container [2018-10-23 23:28:27,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:28:23" (2/3) ... [2018-10-23 23:28:27,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0915ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:28:27, skipping insertion in model container [2018-10-23 23:28:27,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:28:27" (3/3) ... [2018-10-23 23:28:27,635 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label47_true-unreach-call_false-termination.c [2018-10-23 23:28:27,651 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:28:27,669 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:28:27,691 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:28:27,757 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:28:27,758 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:28:27,758 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:28:27,758 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:28:27,759 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:28:27,759 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:28:27,760 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:28:27,760 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:28:27,815 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:28:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-23 23:28:27,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:27,831 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:28:27,834 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:27,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:27,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1596642336, now seen corresponding path program 1 times [2018-10-23 23:28:27,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:27,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:27,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:27,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:27,900 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:28,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:28,582 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:28:28,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:28:28,583 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:28,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:28:28,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:28:28,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:28:28,615 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:28:30,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:28:30,510 INFO L93 Difference]: Finished difference Result 627 states and 1072 transitions. [2018-10-23 23:28:30,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:28:30,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2018-10-23 23:28:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:28:30,535 INFO L225 Difference]: With dead ends: 627 [2018-10-23 23:28:30,536 INFO L226 Difference]: Without dead ends: 388 [2018-10-23 23:28:30,543 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:28:30,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-10-23 23:28:30,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-10-23 23:28:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-23 23:28:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 619 transitions. [2018-10-23 23:28:30,646 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 619 transitions. Word has length 114 [2018-10-23 23:28:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:28:30,648 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 619 transitions. [2018-10-23 23:28:30,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:28:30,648 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 619 transitions. [2018-10-23 23:28:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-23 23:28:30,660 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:30,661 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:28:30,661 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:30,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:30,662 INFO L82 PathProgramCache]: Analyzing trace with hash -425024083, now seen corresponding path program 1 times [2018-10-23 23:28:30,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:30,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:30,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:30,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:30,667 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:31,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:28:31,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:28:31,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:31,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:28:31,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:28:31,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:28:31,042 INFO L87 Difference]: Start difference. First operand 383 states and 619 transitions. Second operand 5 states. [2018-10-23 23:28:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:28:32,819 INFO L93 Difference]: Finished difference Result 905 states and 1519 transitions. [2018-10-23 23:28:32,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:28:32,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 123 [2018-10-23 23:28:32,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:28:32,825 INFO L225 Difference]: With dead ends: 905 [2018-10-23 23:28:32,825 INFO L226 Difference]: Without dead ends: 382 [2018-10-23 23:28:32,831 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:28:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-23 23:28:32,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-23 23:28:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-23 23:28:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 613 transitions. [2018-10-23 23:28:32,868 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 613 transitions. Word has length 123 [2018-10-23 23:28:32,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:28:32,869 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 613 transitions. [2018-10-23 23:28:32,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:28:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 613 transitions. [2018-10-23 23:28:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-23 23:28:32,875 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:32,875 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:28:32,875 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:32,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:32,878 INFO L82 PathProgramCache]: Analyzing trace with hash 391088041, now seen corresponding path program 1 times [2018-10-23 23:28:32,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:32,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:32,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:32,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:32,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:33,148 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-23 23:28:33,470 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 23:28:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:33,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:28:33,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:28:33,614 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:33,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:28:33,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:28:33,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:28:33,616 INFO L87 Difference]: Start difference. First operand 382 states and 613 transitions. Second operand 6 states. [2018-10-23 23:28:36,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:28:36,558 INFO L93 Difference]: Finished difference Result 1241 states and 2101 transitions. [2018-10-23 23:28:36,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 23:28:36,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-23 23:28:36,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:28:36,570 INFO L225 Difference]: With dead ends: 1241 [2018-10-23 23:28:36,571 INFO L226 Difference]: Without dead ends: 865 [2018-10-23 23:28:36,577 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 [2018-10-23 23:28:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2018-10-23 23:28:36,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 818. [2018-10-23 23:28:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2018-10-23 23:28:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1267 transitions. [2018-10-23 23:28:36,670 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1267 transitions. Word has length 125 [2018-10-23 23:28:36,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:28:36,670 INFO L481 AbstractCegarLoop]: Abstraction has 818 states and 1267 transitions. [2018-10-23 23:28:36,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:28:36,670 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1267 transitions. [2018-10-23 23:28:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-23 23:28:36,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:36,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:28:36,676 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:36,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:36,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2039626074, now seen corresponding path program 1 times [2018-10-23 23:28:36,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:36,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:36,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:36,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:36,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:37,169 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-23 23:28:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:37,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:28:37,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:28:37,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:37,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:28:37,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:28:37,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:28:37,382 INFO L87 Difference]: Start difference. First operand 818 states and 1267 transitions. Second operand 5 states. [2018-10-23 23:28:39,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:28:39,761 INFO L93 Difference]: Finished difference Result 1775 states and 2790 transitions. [2018-10-23 23:28:39,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:28:39,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-10-23 23:28:39,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:28:39,769 INFO L225 Difference]: With dead ends: 1775 [2018-10-23 23:28:39,770 INFO L226 Difference]: Without dead ends: 815 [2018-10-23 23:28:39,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:28:39,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2018-10-23 23:28:39,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 815. [2018-10-23 23:28:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2018-10-23 23:28:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1250 transitions. [2018-10-23 23:28:39,808 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1250 transitions. Word has length 139 [2018-10-23 23:28:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:28:39,810 INFO L481 AbstractCegarLoop]: Abstraction has 815 states and 1250 transitions. [2018-10-23 23:28:39,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:28:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1250 transitions. [2018-10-23 23:28:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-23 23:28:39,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:39,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:28:39,814 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:39,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:39,815 INFO L82 PathProgramCache]: Analyzing trace with hash -916026206, now seen corresponding path program 1 times [2018-10-23 23:28:39,815 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:39,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:39,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:39,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:39,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:40,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:28:40,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:28:40,148 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:40,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:28:40,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:28:40,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:28:40,149 INFO L87 Difference]: Start difference. First operand 815 states and 1250 transitions. Second operand 5 states. [2018-10-23 23:28:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:28:41,565 INFO L93 Difference]: Finished difference Result 1765 states and 2745 transitions. [2018-10-23 23:28:41,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:28:41,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-10-23 23:28:41,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:28:41,573 INFO L225 Difference]: With dead ends: 1765 [2018-10-23 23:28:41,573 INFO L226 Difference]: Without dead ends: 808 [2018-10-23 23:28:41,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:28:41,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2018-10-23 23:28:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 806. [2018-10-23 23:28:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2018-10-23 23:28:41,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1218 transitions. [2018-10-23 23:28:41,601 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1218 transitions. Word has length 141 [2018-10-23 23:28:41,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:28:41,602 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 1218 transitions. [2018-10-23 23:28:41,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:28:41,602 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1218 transitions. [2018-10-23 23:28:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-23 23:28:41,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:28:41,606 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 23:28:41,606 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:28:41,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:41,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1064185502, now seen corresponding path program 1 times [2018-10-23 23:28:41,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:28:41,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:41,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:28:41,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:28:41,608 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:28:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:28:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:28:41,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:28:41,746 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:28:41,747 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 150 with the following transitions: [2018-10-23 23:28:41,750 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [45], [50], [52], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [583], [585], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:28:41,832 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:28:41,832 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:29:14,046 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:29:14,048 INFO L272 AbstractInterpreter]: Visited 118 different actions 230 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-23 23:29:14,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:29:14,063 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:29:20,527 INFO L232 lantSequenceWeakener]: Weakened 38 states. On average, predicates are now at 82.81% of their original sizes. [2018-10-23 23:29:20,528 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:32:37,874 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:32:37,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:32:37,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [6] total 30 [2018-10-23 23:32:37,878 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:32:37,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-23 23:32:37,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-23 23:32:37,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2018-10-23 23:32:37,880 INFO L87 Difference]: Start difference. First operand 806 states and 1218 transitions. Second operand 26 states. Received shutdown request... [2018-10-23 23:32:46,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:32:46,249 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:32:46,254 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:32:46,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:32:46 BoogieIcfgContainer [2018-10-23 23:32:46,255 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:32:46,256 INFO L168 Benchmark]: Toolchain (without parser) took 263015.64 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 336.5 MB. Max. memory is 7.1 GB. [2018-10-23 23:32:46,257 INFO L168 Benchmark]: CDTParser took 0.57 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. [2018-10-23 23:32:46,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:32:46,260 INFO L168 Benchmark]: Boogie Procedure Inliner took 208.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:32:46,261 INFO L168 Benchmark]: Boogie Preprocessor took 70.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:32:46,261 INFO L168 Benchmark]: RCFGBuilder took 3460.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 108.7 MB). Peak memory consumption was 108.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:32:46,262 INFO L168 Benchmark]: TraceAbstraction took 258634.70 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -989.0 MB). Peak memory consumption was 272.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:32:46,269 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 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 635.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 208.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -821.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3460.48 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 108.7 MB). Peak memory consumption was 108.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258634.70 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -989.0 MB). Peak memory consumption was 272.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 493]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 493). Cancelled while BasicCegarLoop was constructing difference of abstraction (806states) and FLOYD_HOARE automaton (currently 7 states, 26 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 29 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 258.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 18.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 637 SDtfs, 2679 SDslu, 636 SDs, 0 SdLazy, 4081 SolverSat, 721 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 190 GetRequests, 109 SyntacticMatches, 36 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 200.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=818occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 32.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9939256468417209 AbsIntWeakeningRatio, 0.22972972972972974 AbsIntAvgWeakeningVarsNumRemoved, 364.7635135135135 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 54 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 791 NumberOfCodeBlocks, 791 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 785 ConstructedInterpolants, 0 QuantifiedInterpolants, 794362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 99/101 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown